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Acids and Bases
quiz review
57
Science
8th Grade
01/28/2010

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Cards

Term
What ion are we describing when we discuss acids and bases?
Definition
hydrogen
Term
What is a solution?
Definition
a mixture that is the same throughout
Term
Hawaiian Punch is not a solution.
True or False
Definition
False
Term
A pH scale begins at zero and goes up to what?
Definition
fourteen (14)
Term
Does a base give away hydrogen ions or accept them?
Definition
accepts them
Term
A substance that is neither an acid nor a base is called what?
Definition
neutral
Term
Strong acids burn worse than strong bases.
True or False
Definition
False
Term
A low pH tells us the substance is very acidic or very basic.
Definition
very acidic
Term
A solid can be a solution.
True or False
Definition
True
Term
If I stir my tea and the sugar no longer dissolves then the tea must be what?
Definition
saturated
Term
A combination of substances is called a what?
Definition
mixture
Term
If I can keep dissolving pure alcohol in water then the alcohol has a high what?
Definition
solubility
Term
Give me one sensation that an acid on your skin might give you.
Definition
burning, tingling, stinging, etc.
Term
Tell me how I can dilute a solution.
Definition
Add more solvent (water)
Term
The substance that gets dissolved in a solution is called the what?
Definition
solute
Term
The substance that does the dissolving in a solution is called the what?
Definition
solvent
Term
If I want to increase the concentration of my Kool-Aide I would add more what?
Definition
Kool-Aide powder (solute)
Term
If my tea is saturated with sugar how could I make more sugar dissolve?
Definition
heat it up or add more water
Term
When the particles are larger than those found in in a solution they turn the liquid cloudy instead of dissolving. This is a what?
Definition
suspension
Term
Give me an example of a suspension.
Definition
flour in water, muddy river, etc.
Term
What is the "universal solvent"?
Definition
water
Term
Hydrochloric acid has a pH of 0 Mountain Dew has a pH of 4 How many times more acidic is HCl than Mountain Dew?
Definition
10,000 times more acidic
Term
What is the solute in saltwater?
Definition
salt
Term
I noticed the tap water looked the same throughout. It must be a what?
Definition
solution
Term
Baking powder, shampoo, and Tums are all examples of what?
Definition
bases
Term
What taste would a base have?
Definition
bitter
Term
What is the pH of pure water?
Definition
seven (7)
Term
Sand stirred up in water is a solution. True or False
Definition
False
Term
Is a solution a mixture?
Definition
yes
Term
An acid would turn litmus paper what color?
Definition
red
Term
A base gives you what type of sensation?
Definition
slippery
Term
Can a gas be dissolved?
Definition
yes
Term
If I wanted to clean my skin would I use a product with a pH of 4 or a pH of 12?
Definition
pH of 12
Term
A base would turn litmus paper what color?
Definition
blue
Term
Only a small amount of carbon dioxide can dissolve in pop. This means carbon dioxide has a high or low solubility?
Definition
low
Term
What does homogenous mean?
Definition
a type of mixture that is the same throughout
Term
How do you dissolve a gas?
Definition
add pressure
Term
The more solute that is dissolved in a solvent will increase its what?
Definition
concentration
Term
The amount of a substance that will dissolve in a certain amount of a solvent is called what?
Definition
solubility
Term
What two processes can change solubility?
Definition
pressure and temperature
Term
Generally, a compound that is an acid or a base acts as an acid or base when it is what?
Definition
dissolved in water
Term
What does pH stand for?
Definition

potential hydrogen

power of hydrogen

Term
What are bases also known as?
Definition
alkalines
Term
What happens when acids and bases come in contact?
Definition
the neutralize each other or cancel each other out
Term
Each step on the pH scale is 10 times greater than the previous value. So if lemon juice has a pH of 2 and Hydrochloric acid has a pH of 0, how much more acidic is HCl than lemon juice?
Definition
100 times
Term
A high Hydrogen ion concentration means a low number on the pH scale. True or False.
Definition
true
Term
The pH scale is normally numbered from 0 to 14. Can numbers fall outside of this range?
Definition
yes
Term
An acid would normally have what kind of taste?
Definition
sour
Term
A base would have what kind of feeling on your skin?
Definition
soapy, slippery feel
Term
What do we call a solution that has a low concentration of solute?
Definition
dilute solution
Term
Adding rock salt to an icy sidewalk is a good example of how adding a solute to a solvent can lower what?
Definition
the freezing point of the solution
Term
I can easily dissolve carbon dioxide bubbles in a Mountain Dew by heating it up. True or false
Definition
False. Heating up a liquid with gasses would only increase the amount of bubbles, not dissolve them!
Term
A solution that has the maximum amount of solute that can be dissolved in the solvent is said to be what?
Definition
saturated
Term
What do we call a solution that is saturated and you heat it up to dissolve even more of the solute?
Definition
supersaturated solution
Term
Is a fruit salad a heterogenous mixture or a homogenous mixture?
Definition
It is a heterogenous mixture because you can see the different substances within it.
Term

Which of the following gases in this solution is a solvent and why?

 

Neon:          48% of the mixture

Hydrogen:    37% of the mixture

Argon:         15% of the mixture

 

Definition
Neon is the solvent because it is the highest percentage of all the gases in that solution.
Term
If oil is insoluble in water this means what?
Definition
It cannot be dissolved in water. A substance that is insoluble means it cannot be dissolved in that particular solvent.
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