Term
Law of conservation
A. State what it is
B. give an everyday example
C. Give one chemical reaction that illustrates it. |
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Definition
A. The total mass remains constant during a chemical change.
B. Burning wood
c.Heating up 5g of mercury oxide creates 4g of mercury and 1g of oxygen
C. |
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Term
Solids Liquids And gases
A. Describe th
E differences between the states of matter |
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Definition
A. Substances in solid form are identified by their rigidity; they maintain their Shapes when subjected to outside forces. Liquids and gases however are fluids; that is, they flow easily and change their shapes in response to slight outside forces.
B. solid:rock liquid: water gas: oxygen |
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Term
Properties of matter
A. Physical property |
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Definition
A. A characteristic that can be observed for a material without changing its chemical identity
Size
Shape
Weight |
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Term
Chemical property
Define it
Give three examples |
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Definition
A characteristic of a material involving its chemical change
Irons ability to react with oxygen to produce rust
Burning wood
Acid melting through metal |
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Term
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Definition
A change in the form of matter but not in its chemical identity
Chopping wood in half
Dissolving one material in another |
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Term
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Definition
A change in which one or more kinds of matter are transformed into new matter or several new kinds of matter
The rusting of iron
The burning of wood |
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Term
Substances- describe the difference between pure and impure substances
A. Elements
Define:
Three examples |
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Definition
A substance that cannot be decomposed by any chemical reaction into simpler substances.
Iodine
Arsenic
Mercury |
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Term
Compounds
Define
3 Examples |
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Definition
A compound is a substance composed of two or more elements chemically combined.
CO
CO2
H2O |
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Term
Mixtures
Define
3 Examples |
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Definition
A mixture is a material that can be separated by physical means into two or more substances.
Milk
Air
Gasoline |
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Term
| Describe the difference between heterogeneous and homogeneous mixtures. |
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Definition
A heterogeneous mixture is a mixture that consists of physically distinct parts, each with different properties.
A homogeneous mixture is a mixture that is uniform in its properties throughout given samples. |
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Term
Intensive Property
Define
2 Examples |
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Definition
| Intensive properties do not depend on the amount of matter that is present. Examples of intensive properties include boiling point and density. |
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Term
Extensive property
Define
2 Examples |
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Definition
| Extensive properties do depend on the amount of matter that is present. Examples of extensive properties include volume and mass. |
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Term
Chromotography
A. What is it
B. 3 different types |
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Definition
A. Chromatography is a group of similar separation techniques.
B. Gas Chromotagraphy: Separates mixtures on the basis of their distribution between a stationary liquid phase and a mobile gas phase. A chemically inert carrier gas.
Column Chromatography: liquid that is pumped thru a column filled with fine solid particles whose surfaces have been chemically treated.
Paper Chromatography: A technique for separating and identifying mixtures that are or can be colored, especially pigments. |
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Term
| Paper chromatography applied |
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Definition
| Paper chromatography can be used to separate color pigments, such as in the MnM experiment. |
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