Term
037) On the pH scale, water or H2O is:
A) 7/acid
B) 7/base
C) 7/Alkaline
D) 7/neutral |
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Definition
[image]
7/neutral
Although pH, the abbreviation used for potential hydrogen,
A pH scale is a measure of the acidity and alkalinity of a substance. It has a range of 0 to 14. A pH of 7 is a neutral solution, a pH below 7 indicates an acidic solution, and a pH above 7 indicates an alkaline solution
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Term
038) How many more times Alkaline (Base) is a PH of 9 than that of 7:
A) 10
B) 20
C) 100
D) 1,000 |
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Definition
[image]
100
The term logarithm (LOG-ah-rhythm) means multiples of 10. Since the pH scale is a logarithmic scale, a change of one whole number represents a tenfold change in pH. This means, for example, that a pH of 8 is 10 times more alkaline than a pH of 7. A change of two whole numbers represents a change of 10 times 10, or a 100-fold change. So a pH of 9 is 100 times more alkaline than a pH of 7. Even a small change on the pH scale represents a large change in the pH.
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Term
039) Emulsions containing particles large enough to be seen are called:
A) Keloids
B) Coloids
C) Suspensions
D) Rhytads |
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Definition
Colloids
Emulsion* A blend of two liquid where one forms tiny droplets which are evenly dispersed in the other. It is not strictly a mixture, because the two liquids do not actually mix. The technical term for combinations of this kind is a colloid*.
An emulsion (ee-MUL-shun) is an unstable physical mixture of two or more immiscible substances (substances that normally will not stay blended) plus a special ingredient called an emulsifier. An emulsifier (ee-MUL-suh-fy-ur) is an ingredient that brings two normally incompatible materials together and binds them into a uniform and fairly stable blend. Emulsions are considered to be a special type of suspension because they can separate, but the separation usually happens very slowly over a long period of time. An example of an emulsion is hand lotion. |
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Term
040) Binders or gums are used to:
A) Hold emulsions together
B) Hold solutions together
C) Hold suspentions together
D) All of the above |
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Definition
Hold Emulsions together
An emulsion (ee-MUL-shun) is an unstable physical mixture of two or more immiscible substances (substances that normally will not stay blended) plus a special ingredient called an emulsifier. An emulsifier (ee-MUL-suh-fy-ur) is an ingredient that brings two normally incompatible materials together and binds them into a uniform and fairly stable blend. Emulsions are considered to be a special type of suspension because they can separate, but the separation usually happens very slowly over a long period of time. An example of an emulsion is hand lotion.
Xanthan gum is a polysaccharide (a complex form of sugar). It is added to certain foods, such as salad dressings, to make them thicker. It is also added to cosmetics to keep the ingredients from separating. To make xanthan gum, workers deliberately add a kind of bacterium, Xanthomonas campestris, to glucose or sucrose. They let the mixture ferment for a while, and then add isopropyl alcohol to separate the polysaccharide from the mixture. They dry the polysaccharide, grind it into a powder, and then add it to a liquid. The xanthan gum is then ready to use Gum arabic's mixture of polysaccharides and glycoproteins gives it the properties of a glue and binder which is edible by humans. Other substances have replaced it in situations where their toxicity is not an issue, as the proportions of the various chemicals in gum arabic vary widely and make it unpredictable. Still, it remains an important ingredient in soft drink syrups, "hard" gummy candies such as gumdrops, marshmallows, M&M's chocolate candies, and edible glitter, a very popular, modern cake-decorating staple. For artists, it is the traditional binder used in watercolor paint, in photography for gum printing, and it is used as a binder in pyrotechnic compositions. Pharmaceuticals and cosmetics also use the gum as a binder, emulsifying agent and a suspending or viscosity increasing agent.[1] Gum arabic has been used in the past as a wine fining agent
What Is A Mixture?
1. Mixtures- two or more things combine physically
in no specific proportions. They just mix.
2. A mixture is not chemically combined.
3. Mixtures can be separated by physical means such as filtration, distillation, and chromatography
4. Mixtures can be divided into two groups
A. Homogenous mixtures
B. Heterogeneous mixtures
1. Hydrogen is an element.
2. Oxygen is an element.
3. When hydrogen and oxygen bond they make the compound water.
4. When salt and water are combined, a mixture is created.
Compounds in mixtures retain their individual properties.
What Is a Homogenous Mixture?
1. A homogeneous mixture is a mixture that is evenly distributed- THE SAME THROUGHOUT
2. Homogeneous mixtures called solutions or colloids.
A. Solution = Solute + Solvent
I. Solute: substance being dissolved
II. Solvent: substance doing the dissolving
3. The solvent is present in greater quantity
4. The solute is present in the lesser quantity
A. Ex: Salt water ➜ Salt = solute Water = solvent
Solutions - Homogeneous Mixture
1. A solution is a type of homogeneous mixture formed when one substance dissolves in another.
2. The size of the solute in a solution ion, atom or molecular, so solutions never settle –they always still mixed.
3. Solutions never settle and solutions never show the Tyndal effect.
Colloid – Homogeneous Mixture
1. In a colloid the particles are mixed together but not dissolved.
2. The particles are microscopic size so they are kept permanently suspended.
3. A colloid will not separate upon standing.
4. The particles are constantly colliding, and this allows a colloid to scatter light – thus colloids often seem cloudy.
Colloids and the Tyndal Effect
The microscopic particles of a colloid reflect the light that passes through it so you see the “beam of light”
–it’s called the Tyndal Effect
Heterogeneous Mixture - Suspension
1. Suspension – the solute is unevenly distributed, has to be shaken or stirred to get a uniformity in it.
2. Examples
A. Paint
B. Chex Mix: You may find a different number of pretzels or Chex cereal in each handful; therefore, the mixture is unevenly distributed
C. Italian Salad dressing
D. Chocolate Milk
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Term
062) The chemical name for common household bleach:
A) Sodium Hydroxide
B) Sodium Bromate
C) Sodium Hypochlorite
D) Aniline Derivative |
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Definition
SODIUM HYPOCHLORITE
Household bleach, 5.25 percent sodium hypochlorite (SOH-dee-um hy-puh-KLOR-ite), is an effective disinfectant and has been used extensively as a disinfectant in the salon. Using too much bleach can damage some metals and plastics, so be sure to read the label for safe use. Bleach can be corrosive to metals and plastics and can cause skin irritation and eye damage. To mix a bleach solution, always follow the manufacturer’s directions. Store the bleach solution away from heat and light. A fresh bleach solution should be mixed every twenty-four hours or when the solution has been contaminated. After mixing the bleach solution, date the container to ensure that the solution is not saved from one day to the next. Bleach can be irritating to the lungs, so be careful about inhaling the fumes.
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Term
070) Droplets of oil emulsified in water are referred to as:
A) Water in oil emulsions
B) Oil in water suspensions
C) Oil in water emulsions
D) None of the above |
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Definition
[image]
oil in water emulsions
In an oil-in-water (O/W) emulsion, oil droplets are emulsified in water. The droplets of oil are surrounded by surfactant molecules with their lipophilic tails pointing in and their hydrophilic heads pointing out. Tiny oil droplets form the internal portion of each O/W emulsion because the oil is completely surrounded by water. Oil-in-water emulsions do not feel as greasy as water-in-oil emulsions because the oil is hidden and water forms the external portion of the emulsion.
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Term
071) Droplets of water emulsified in oil are referred to as:
A) Water in oil emulsions
B) Oil in water suspensions
C) Oil in water emulsions
D) None of the above
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Definition
[image]
water in oil emulsions
In a water-in-oil (W/O) emulsion, water droplets are emulsified in oil. The droplets of water are surrounded by surfactants with their hydrophilic heads pointing in and their lipophilic tails pointing out. Tiny droplets of water form the internal portion of a W/O emulsion because the water is completely surrounded by oil. Water-in-oil emulsions feel greasier than oil-in-water emulsions because the water is hidden and oil forms the external portion of the emulsion. Styling creams, cold creams, and foot balms are examples
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Term
119) Emulsions are held together by the addition of:
A) Binders
B) Gums
C) Emulsifiers
D) all of the above |
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Definition
Binders, Gums, Emulsifiers
Emulsion* A blend of two liquid where one forms tiny droplets which are evenly dispersed in the other. It is not strictly a mixture, because the two liquids do not actually mix. The technical term for combinations of this kind is a colloid*.
An emulsion (ee-MUL-shun) is an unstable physical mixture of two or more immiscible substances (substances that normally will not stay blended) plus a special ingredient called an emulsifier. An emulsifier (ee-MUL-suh-fy-ur) is an ingredient that brings two normally incompatible materials together and binds them into a uniform and fairly stable blend. Emulsions are considered to be a special type of suspension because they can separate, but the separation usually happens very slowly over a long period of time. An example of an emulsion is hand lotion.
What Is A Mixture?
1. Mixtures- two or more things combine physically
in no specific proportions. They just mix.
2. A mixture is not chemically combined.
3. Mixtures can be separated by physical means such as filtration, distillation, and chromatography
4. Mixtures can be divided into two groups
A. Homogenous mixtures
B. Heterogeneous mixtures
1. Hydrogen is an element.
2. Oxygen is an element.
3. When hydrogen and oxygen bond they make the compound water.
4. When salt and water are combined, a mixture is created.
Compounds in mixtures retain their individual properties.
What Is a Homogenous Mixture?
1. A homogeneous mixture is a mixture that is evenly distributed- THE SAME THROUGHOUT
2. Homogeneous mixtures called solutions or colloids.
A. Solution = Solute + Solvent
I. Solute: substance being dissolved
II. Solvent: substance doing the dissolving
3. The solvent is present in greater quantity
4. The solute is present in the lesser quantity
A. Ex: Salt water ➜ Salt = solute Water = solvent
Solutions - Homogeneous Mixture
1. A solution is a type of homogeneous mixture formed when one substance dissolves in another.
2. The size of the solute in a solution ion, atom or molecular, so solutions never settle –they always still mixed.
3. Solutions never settle and solutions never show the Tyndal effect.
Colloid – Homogeneous Mixture
1. In a colloid the particles are mixed together but not dissolved.
2. The particles are microscopic size so they are kept permanently suspended.
3. A colloid will not separate upon standing.
4. The particles are constantly colliding, and this allows a colloid to scatter light – thus colloids often seem cloudy.
Colloids and the Tyndal Effect
The microscopic particles of a colloid reflect the light that passes through it so you see the “beam of light”
–it’s called the Tyndal Effect
Heterogeneous Mixture - Suspension
1. Suspension – the solute is unevenly distributed, has to be shaken or stirred to get a uniformity in it.
2. Examples
A. Paint
B. Chex Mix: You may find a different number of pretzels or Chex cereal in each handful; therefore, the mixture is unevenly distributed
C. Italian Salad dressing
D. Chocolate Milk
Hold Emulsions together
Xanthan gum is a polysaccharide (a complex form of sugar). It is added to certain foods, such as salad dressings, to make them thicker. It is also added to cosmetics to keep the ingredients from separating. To make xanthan gum, workers deliberately add a kind of bacterium, Xanthomonas campestris, to glucose or sucrose. They let the mixture ferment for a while, and then add isopropyl alcohol to separate the polysaccharide from the mixture. They dry the polysaccharide, grind it into a powder, then add it to a liquid. The xanthan gum is then ready to use Gum arabic's mixture of polysaccharides and glycoproteins gives it the properties of a glue and binder which is edible by humans. Other substances have replaced it in situations where their toxicity is not an issue, as the proportions of the various chemicals in gum arabic vary widely and make it unpredictable. Still, it remains an important ingredient in soft drink syrups, "hard" gummy candies such as gumdrops, marshmallows, M&M's chocolate candies, and edible glitter, a very popular, modern cake-decorating staple. For artists, it is the traditional binder used in watercolor paint, in photography for gum printing, and it is used as a binder in pyrotechnic compositions. Pharmaceuticals and cosmetics also use the gum as a binder, emulsifying agent and a suspending or viscosity increasing agent.[1] Gum arabic has been used in the past as a wine fining agent
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Term
185) To test the hair's ability to absorb moisture (including waving lotion, relaxer, hair color, and all other liquids), preform a /an _______________ Test:
A) Elasticity Test
B) Match Test
C) Strand Test
D) Porosity Test |
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Definition
POROSITY TEST
Hair porosity is the ability of the hair to absorb moisture. The degree of porosity is directly related to the condition of the cuticle layer. Healthy hair with a compact cuticle layer is naturally resistant to being penetrated by moisture and is referred to as hydrophobic (hy-druh-FOHB-ik). Porous hair has a raised cuticle layer that easily absorbs moisture and is called hydrophilic (hy-druh-FIL-ik).Hair with low porosity is considered resistant. Chemical services performed on hair with low porosity require a more alkaline solution than those on hair with high porosity. Alkaline solutions raise the cuticle and permit uniform saturation and processing on resistant hair.
Hair with average porosity is considered to be normal hair. Chemical services performed on this type of hair will usually process as expected, according to the texture.
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Term
225) Two or more substances mixed together that will seperate upon standing:
A) Solution
B) Emultion
C) Suspention
D) Coloid |
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Definition
Suspension
(sus-PEN-shunz) are unstable physical mixtures of undissolved particles in a liquid. Compared with solutions, suspensions contain larger and less miscible particles. The particles are generally visible to the naked eye but are not large enough to settle quickly to the bottom. Suspensions are not usually transparent and may be colored. They are unstable and separate over time, which is why some lotions and creams can separate in the bottle and need to be shaken before they are used. Another example of a suspension is the glitter in nail polish that can separate from the polish. Oil and vinegar salad dressing is an example of a suspension, with tiny oil droplets suspended in the vinegar. The suspension will separate when left sitting still and must be shaken before using. Calamine lotion and nail polish are other examples of suspensions
What Is A Mixture?
1. Mixtures- two or more things combine physically
in no specific proportions. They just mix.
2. A mixture is not chemically combined.
3. Mixtures can be separated by physical means such as filtration, distillation, and chromatography
4. Mixtures can be divided into two groups
A. Homogenous mixtures
B. Heterogeneous mixtures
1. Hydrogen is an element.
2. Oxygen is an element.
3. When hydrogen and oxygen bond they make the compound water.
4. When salt and water are combined, a mixture is created.
Compounds in mixtures retain their individual properties.
What Is a Homogenous Mixture?
1. A homogeneous mixture is a mixture that is evenly distributed- THE SAME THROUGHOUT
2. Homogeneous mixtures called solutions or colloids.
A. Solution = Solute + Solvent
I. Solute: substance being dissolved
II. Solvent: substance doing the dissolving
3. The solvent is present in greater quantity
4. The solute is present in the lesser quantity
A. Ex: Salt water ➜ Salt = solute Water = solvent
Solutions - Homogeneous Mixture
1. A solution is a type of homogeneous mixture formed when one substance dissolves in another.
2. The size of the solute in a solution ion, atom or molecular, so solutions never settle –they always still mixed.
3. Solutions never settle and solutions never show the Tyndal effect.
Colloid – Homogeneous Mixture
1. In a colloid the particles are mixed together but not dissolved.
2. The particles are microscopic size so they are kept permanently suspended.
3. A colloid will not separate upon standing.
4. The particles are constantly colliding, and this allows a colloid to scatter light – thus colloids often seem cloudy.
Colloids and the Tyndal Effect
The microscopic particles of a colloid reflect the light that passes through it so you see the “beam of light”
–it’s called the Tyndal Effect
Heterogeneous Mixture - Suspension
1. Suspension – the solute is unevenly distributed, has to be shaken or stirred to get a uniformity in it.
2. Examples
A. Paint
B. Chex Mix: You may find a different number of pretzels or Chex cereal in each handful; therefore, the mixture is unevenly distributed
C. Italian Salad dressing
D. Chocolate Milk
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Term
226) Two or more substances mixed together that will not seperate upon standing:
A) Solute
B) Emulsion
C) Suspention
D) Colloid |
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Definition
EMULSIONS
An emulsion (ee-MUL-shun) is an unstable physical mixture of two or more immiscible substances (substances that normally will not stay blended) plus a special ingredient called an emulsifier. An Emulsifier (ee-MUL-suh-fy-ur) is an ingredient that brings two normally incompatible materials together and binds them into a uniform and fairly stable blend. Emulsions are considered to be a special type of suspension because they can separate, but the separation usually happens very slowly over a long period of time. In example of an emulsion is hand lotion
What Is A Mixture?
1. Mixtures- two or more things combine physically
in no specific proportions. They just mix.
2. A mixture is not chemically combined.
3. Mixtures can be separated by physical means such as filtration, distillation, and chromatography
4. Mixtures can be divided into two groups
A. Homogenous mixtures
B. Heterogeneous mixtures
1. Hydrogen is an element.
2. Oxygen is an element.
3. When hydrogen and oxygen bond they make the compound water.
4. When salt and water are combined, a mixture is created.
Compounds in mixtures retain their individual properties.
What Is a Homogenous Mixture?
1. A homogeneous mixture is a mixture that is evenly distributed- THE SAME THROUGHOUT
2. Homogeneous mixtures called solutions or colloids.
A. Solution = Solute + Solvent
I. Solute: substance being dissolved
II. Solvent: substance doing the dissolving
3. The solvent is present in greater quantity
4. The solute is present in the lesser quantity
A. Ex: Salt water ➜ Salt = solute Water = solvent
Solutions - Homogeneous Mixture
1. A solution is a type of homogeneous mixture formed when one substance dissolves in another.
2. The size of the solute in a solution ion, atom or molecular, so solutions never settle –they always still mixed.
3. Solutions never settle and solutions never show the Tyndal effect.
Colloid – Homogeneous Mixture
1. In a colloid the particles are mixed together but not dissolved.
2. The particles are microscopic size so they are kept permanently suspended.
3. A colloid will not separate upon standing.
4. The particles are constantly colliding, and this allows a colloid to scatter light – thus colloids often seem cloudy.
Colloids and the Tyndal Effect
The microscopic particles of a colloid reflect the light that passes through it so you see the “beam of light”
–it’s called the Tyndal Effect
Heterogeneous Mixture - Suspension
1. Suspension – the solute is unevenly distributed, has to be shaken or stirred to get a uniformity in it.
2. Examples
A. Paint
B. Chex Mix: You may find a different number of pretzels or Chex cereal in each handful; therefore, the mixture is unevenly distributed
C. Italian Salad dressing
D. Chocolate Milk
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Term
227) Added to emulsions to keep them from separating:
A) Emulsifiers
B) Binders
C) Gums
D All of the above |
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Definition
Emulsifiers- Binders-Gums
An Emulsifier (ee-MUL-suh-fy-ur) is an ingredient that brings two normally incompatible materials together and binds them into a uniform and fairly stable blend. Emulsions are considered to be a special type of suspension because they can separate, but the separation usually happens very slowly over a long period of time. In example of an emulsion is hand lotion
What Is A Mixture?
1. Mixtures- two or more things combine physically
in no specific proportions. They just mix.
2. A mixture is not chemically combined.
3. Mixtures can be separated by physical means such as filtration, distillation, and chromatography
4. Mixtures can be divided into two groups
A. Homogenous mixtures
B. Heterogeneous mixtures
1. Hydrogen is an element.
2. Oxygen is an element.
3. When hydrogen and oxygen bond they make the compound water.
4. When salt and water are combined, a mixture is created.
Compounds in mixtures retain their individual properties.
What Is a Homogenous Mixture?
1. A homogeneous mixture is a mixture that is evenly distributed- THE SAME THROUGHOUT
2. Homogeneous mixtures called solutions or colloids.
A. Solution = Solute + Solvent
I. Solute: substance being dissolved
II. Solvent: substance doing the dissolving
3. The solvent is present in greater quantity
4. The solute is present in the lesser quantity
A. Ex: Salt water ➜ Salt = solute Water = solvent
Solutions - Homogeneous Mixture
1. A solution is a type of homogeneous mixture formed when one substance dissolves in another.
2. The size of the solute in a solution ion, atom or molecular, so solutions never settle –they always still mixed.
3. Solutions never settle and solutions never show the Tyndal effect.
Colloid – Homogeneous Mixture
1. In a colloid the particles are mixed together but not dissolved.
2. The particles are microscopic size so they are kept permanently suspended.
3. A colloid will not separate upon standing.
4. The particles are constantly colliding, and this allows a colloid to scatter light – thus colloids often seem cloudy.
Colloids and the Tyndal Effect
The microscopic particles of a colloid reflect the light that passes through it so you see the “beam of light”
–it’s called the Tyndal Effect
Heterogeneous Mixture - Suspension
1. Suspension – the solute is unevenly distributed, has to be shaken or stirred to get a uniformity in it.
2. Examples
A. Paint
B. Chex Mix: You may find a different number of pretzels or Chex cereal in each handful; therefore, the mixture is unevenly distributed
C. Italian Salad dressing
D. Chocolate Milk
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Term
228) In a solution, this is the portion being dissoved:
A) Solvent
B)Solute
C) Coloid
D) Suspentions
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Definition
SOLUTE
A solution is a stable physical mixture of two or more substances. The solute (SAHL-yoot) is the substance that is dissolved into solution
What Is A Mixture?
1. Mixtures- two or more things combine physically
in no specific proportions. They just mix.
2. A mixture is not chemically combined.
3. Mixtures can be separated by physical means such as filtration, distillation, and chromatography
4. Mixtures can be divided into two groups
A. Homogenous mixtures
B. Heterogeneous mixtures
1. Hydrogen is an element.
2. Oxygen is an element.
3. When hydrogen and oxygen bond they make the compound water.
4. When salt and water are combined, a mixture is created.
Compounds in mixtures retain their individual properties.
What Is a Homogenous Mixture?
1. A homogeneous mixture is a mixture that is evenly distributed- THE SAME THROUGHOUT
2. Homogeneous mixtures called solutions or colloids.
A. Solution = Solute + Solvent
I. Solute: substance being dissolved
II. Solvent: substance doing the dissolving
3. The solvent is present in greater quantity
4. The solute is present in the lesser quantity
A. Ex: Salt water ➜ Salt = solute Water = solvent
Solutions - Homogeneous Mixture
1. A solution is a type of homogeneous mixture formed when one substance dissolves in another.
2. The size of the solute in a solution ion, atom or molecular, so solutions never settle –they always still mixed.
3. Solutions never settle and solutions never show the Tyndal effect.
Colloid – Homogeneous Mixture
1. In a colloid the particles are mixed together but not dissolved.
2. The particles are microscopic size so they are kept permanently suspended.
3. A colloid will not separate upon standing.
4. The particles are constantly colliding, and this allows a colloid to scatter light – thus colloids often seem cloudy.
Colloids and the Tyndal Effect
The microscopic particles of a colloid reflect the light that passes through it so you see the “beam of light”
–it’s called the Tyndal Effect
Heterogeneous Mixture - Suspension
1. Suspension – the solute is unevenly distributed, has to be shaken or stirred to get a uniformity in it.
2. Examples
A. Paint
B. Chex Mix: You may find a different number of pretzels or Chex cereal in each handful; therefore, the mixture is unevenly distributed
C. Italian Salad dressing
D. Chocolate Milk
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Term
285) The PH scale measures:
A) The quality / amount / number of hydroxyl based ions in a water based solution:
B) The alkalinity or base of a water solution
C) The Quantity of hydrogen ion in a solution
D) The quantity of hydrogen based ions in a water base solution |
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Definition
THE QUANTITY OF HYDROGEN BASED IONS IN A WATER BASED SOLUTION
Although pH, the abbreviation used for potential hydrogen, is often mentioned when talking about salon products, it is one of the least understood chemical properties. Notice that pH is written with a small p (which represents a quantity) and a capital H (which represents the hydrogen ion). The term pH represents the quantity of hydrogen ions. |
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Term
286) The approximate pH of H2O2 is:
A) 7
B) 9
C) 4
D) 2 |
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Definition
4
A hydrogen peroxide developer is an oxidizing agent that, when mixed with an oxidation haircolor, supplies the necessary oxygen gas to develop the color molecules and create a change in natural hair color. Developers, also known as oxidizing agents or catalysts, have a pH between 2.5 and 4.5. Although there are a number of developers on the market, hydrogen peroxide (H2O2) is the one most commonly used in haircolor. |
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Term
323) A stable mixture of two or more substances, mixed together, that will not seperate upon standing:
A) Solution
B) Suspension
C) Emulsion
D) Colloid |
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Definition
SOLUTION
A solution is a stable physical mixture of two or more substances. The solute (SAHL-yoot) is the substance that is dissolved into solution
What Is A Mixture?
1. Mixtures- two or more things combine physically
in no specific proportions. They just mix.
2. A mixture is not chemically combined.
3. Mixtures can be separated by physical means such as filtration, distillation, and chromatography
4. Mixtures can be divided into two groups
A. Homogenous mixtures
B. Heterogeneous mixtures
1. Hydrogen is an element.
2. Oxygen is an element.
3. When hydrogen and oxygen bond they make the compound water.
4. When salt and water are combined, a mixture is created.
Compounds in mixtures retain their individual properties.
What Is a Homogenous Mixture?
1. A homogeneous mixture is a mixture that is evenly distributed- THE SAME THROUGHOUT
2. Homogeneous mixtures called solutions or colloids.
A. Solution = Solute + Solvent
I. Solute: substance being dissolved
II. Solvent: substance doing the dissolving
3. The solvent is present in greater quantity
4. The solute is present in the lesser quantity
A. Ex: Salt water ➜ Salt = solute Water = solvent
Solutions - Homogeneous Mixture
1. A solution is a type of homogeneous mixture formed when one substance dissolves in another.
2. The size of the solute in a solution ion, atom or molecular, so solutions never settle –they always still mixed.
3. Solutions never settle and solutions never show the Tyndal effect.
Colloid – Homogeneous Mixture
1. In a colloid the particles are mixed together but not dissolved.
2. The particles are microscopic size so they are kept permanently suspended.
3. A colloid will not separate upon standing.
4. The particles are constantly colliding, and this allows a colloid to scatter light – thus colloids often seem cloudy.
Colloids and the Tyndal Effect
The microscopic particles of a colloid reflect the light that passes through it so you see the “beam of light”
–it’s called the Tyndal Effect
Heterogeneous Mixture - Suspension
1. Suspension – the solute is unevenly distributed, has to be shaken or stirred to get a uniformity in it.
2. Examples
A. Paint
B. Chex Mix: You may find a different number of pretzels or Chex cereal in each handful; therefore, the mixture is unevenly distributed
C. Italian Salad dressing
D. Chocolate Milk
.
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Term
324) An unstable mixture of two or more substances, mixed together, that seperate upon standing:
A) Solution
B) Suspension
C) Emulsion
D) Colloid |
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Definition
SUSPENSION
Suspensions.....Unstable physical mixtures of undissolved particles in a liquid
What Is A Mixture?
1. Mixtures- two or more things combine physically
in no specific proportions. They just mix.
2. A mixture is not chemically combined.
3. Mixtures can be separated by physical means such as filtration, distillation, and chromatography
4. Mixtures can be divided into two groups
A. Homogenous mixtures
B. Heterogeneous mixtures
1. Hydrogen is an element.
2. Oxygen is an element.
3. When hydrogen and oxygen bond they make the compound water.
4. When salt and water are combined, a mixture is created.
Compounds in mixtures retain their individual properties.
What Is a Homogenous Mixture?
1. A homogeneous mixture is a mixture that is evenly distributed- THE SAME THROUGHOUT
2. Homogeneous mixtures called solutions or colloids.
A. Solution = Solute + Solvent
I. Solute: substance being dissolved
II. Solvent: substance doing the dissolving
3. The solvent is present in greater quantity
4. The solute is present in the lesser quantity
A. Ex: Salt water ➜ Salt = solute Water = solvent
Solutions - Homogeneous Mixture
1. A solution is a type of homogeneous mixture formed when one substance dissolves in another.
2. The size of the solute in a solution ion, atom or molecular, so solutions never settle –they always still mixed.
3. Solutions never settle and solutions never show the Tyndal effect.
Colloid – Homogeneous Mixture
1. In a colloid the particles are mixed together but not dissolved.
2. The particles are microscopic size so they are kept permanently suspended.
3. A colloid will not separate upon standing.
4. The particles are constantly colliding, and this allows a colloid to scatter light – thus colloids often seem cloudy.
Colloids and the Tyndal Effect
The microscopic particles of a colloid reflect the light that passes through it so you see the “beam of light”
–it’s called the Tyndal Effect
Heterogeneous Mixture - Suspension
1. Suspension – the solute is unevenly distributed, has to be shaken or stirred to get a uniformity in it.
2. Examples
A. Paint
B. Chex Mix: You may find a different number of pretzels or Chex cereal in each handful; therefore, the mixture is unevenly distributed
C. Italian Salad dressing
D. Chocolate Milk
Colloids
Emulsion* A blend of two liquid where one forms tiny droplets which are evenly dispersed in the other. It is not strictly a mixture, because the two liquids do not actually mix. The technical term for combinations of this kind is a colloid*.
An emulsion (ee-MUL-shun) is an unstable physical mixture of two or more immiscible substances (substances that normally will not stay blended) plus a special ingredient called an emulsifier. An emulsifier (ee-MUL-suh-fy-ur) is an ingredient that brings two normally incompatible materials together and binds them into a uniform and fairly stable blend. Emulsions are considered to be a special type of suspension because they can separate, but the separation usually happens very slowly over a long period of time. An example of an emulsion is hand lotion.
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Term
325) An unstable mixture of two or more substances, mixed together, that will seperate upon standing, unless held together by additional chemicals:
A) Solution
B) Suspention
C) Emulsion
D) Colloid |
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Definition
EMULSION
Colloids
Emulsion* A blend of two liquid where one forms tiny droplets which are evenly dispersed in the other. It is not strictly a mixture, because the two liquids do not actually mix. The technical term for combinations of this kind is a colloid*.
An emulsion (ee-MUL-shun) is an unstable physical mixture of two or more immiscible substances (substances that normally will not stay blended) plus a special ingredient called an emulsifier. An emulsifier (ee-MUL-suh-fy-ur) is an ingredient that brings two normally incompatible materials together and binds them into a uniform and fairly stable blend. Emulsions are considered to be a special type of suspension because they can separate, but the separation usually happens very slowly over a long period of time. An example of an emulsion is hand lotion.
What Is A Mixture?
1. Mixtures- two or more things combine physically
in no specific proportions. They just mix.
2. A mixture is not chemically combined.
3. Mixtures can be separated by physical means such as filtration, distillation, and chromatography
4. Mixtures can be divided into two groups
A. Homogenous mixtures
B. Heterogeneous mixtures
1. Hydrogen is an element.
2. Oxygen is an element.
3. When hydrogen and oxygen bond they make the compound water.
4. When salt and water are combined, a mixture is created.
Compounds in mixtures retain their individual properties.
What Is a Homogenous Mixture?
1. A homogeneous mixture is a mixture that is evenly distributed- THE SAME THROUGHOUT
2. Homogeneous mixtures called solutions or colloids.
A. Solution = Solute + Solvent
I. Solute: substance being dissolved
II. Solvent: substance doing the dissolving
3. The solvent is present in greater quantity
4. The solute is present in the lesser quantity
A. Ex: Salt water ➜ Salt = solute Water = solvent
Solutions - Homogeneous Mixture
1. A solution is a type of homogeneous mixture formed when one substance dissolves in another.
2. The size of the solute in a solution ion, atom or molecular, so solutions never settle –they always still mixed.
3. Solutions never settle and solutions never show the Tyndal effect.
Colloid – Homogeneous Mixture
1. In a colloid the particles are mixed together but not dissolved.
2. The particles are microscopic size so they are kept permanently suspended.
3. A colloid will not separate upon standing.
4. The particles are constantly colliding, and this allows a colloid to scatter light – thus colloids often seem cloudy.
Colloids and the Tyndal Effect
The microscopic particles of a colloid reflect the light that passes through it so you see the “beam of light”
–it’s called the Tyndal Effect
Heterogeneous Mixture - Suspension
1. Suspension – the solute is unevenly distributed, has to be shaken or stirred to get a uniformity in it.
2. Examples
A. Paint
B. Chex Mix: You may find a different number of pretzels or Chex cereal in each handful; therefore, the mixture is unevenly distributed
C. Italian Salad dressing
D. Chocolate Milk
.
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Term
326) An unstable mixture of two or more substances, mixed together, that will seperate upon standing, unless held together by additional chemicals and it contains particles large enough to be seen with the naked eye:
A) Solution
B) Suspention
C) Emulsion
D) Colloid |
|
Definition
COLLOID
Colloids
Emulsion* A blend of two liquid where one forms tiny droplets which are evenly dispersed in the other. It is not strictly a mixture, because the two liquids do not actually mix. The technical term for combinations of this kind is a colloid*.
An emulsion (ee-MUL-shun) is an unstable physical mixture of two or more immiscible substances (substances that normally will not stay blended) plus a special ingredient called an emulsifier. An emulsifier (ee-MUL-suh-fy-ur) is an ingredient that brings two normally incompatible materials together and binds them into a uniform and fairly stable blend. Emulsions are considered to be a special type of suspension because they can separate, but the separation usually happens very slowly over a long period of time. An example of an emulsion is hand lotion.
What Is A Mixture?
1. Mixtures- two or more things combine physically
in no specific proportions. They just mix.
2. A mixture is not chemically combined.
3. Mixtures can be separated by physical means such as filtration, distillation, and chromatography
4. Mixtures can be divided into two groups
A. Homogenous mixtures
B. Heterogeneous mixtures
1. Hydrogen is an element.
2. Oxygen is an element.
3. When hydrogen and oxygen bond they make the compound water.
4. When salt and water are combined, a mixture is created.
Compounds in mixtures retain their individual properties.
What Is a Homogenous Mixture?
1. A homogeneous mixture is a mixture that is evenly distributed- THE SAME THROUGHOUT
2. Homogeneous mixtures called solutions or colloids.
A. Solution = Solute + Solvent
I. Solute: substance being dissolved
II. Solvent: substance doing the dissolving
3. The solvent is present in greater quantity
4. The solute is present in the lesser quantity
A. Ex: Salt water ➜ Salt = solute Water = solvent
Solutions - Homogeneous Mixture
1. A solution is a type of homogeneous mixture formed when one substance dissolves in another.
2. The size of the solute in a solution ion, atom or molecular, so solutions never settle –they always still mixed.
3. Solutions never settle and solutions never show the Tyndal effect.
Colloid – Homogeneous Mixture
1. In a colloid the particles are mixed together but not dissolved.
2. The particles are microscopic size so they are kept permanently suspended.
3. A colloid will not separate upon standing.
4. The particles are constantly colliding, and this allows a colloid to scatter light – thus colloids often seem cloudy.
Colloids and the Tyndal Effect
The microscopic particles of a colloid reflect the light that passes through it so you see the “beam of light”
–it’s called the Tyndal Effect
Heterogeneous Mixture - Suspension
1. Suspension – the solute is unevenly distributed, has to be shaken or stirred to get a uniformity in it.
2. Examples
A. Paint
B. Chex Mix: You may find a different number of pretzels or Chex cereal in each handful; therefore, the mixture is unevenly distributed
C. Italian Salad dressing
D. Chocolate Milk |
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