Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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What happens to a liquid when it evaporates?
a. | The liquid turns into ice | c. | it becomes a gas and may leave
crystals | b. | The liquid hardens | d. | Nothing |
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2.
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How can you tell when a solution is saturated?
a. | When your teacher says the solution is saturated | c. | When you evaporate the liquid and
get crystals | b. | When there IS dissolved material at the bottom | d. | When there is no undissolved material at
the bottom |
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3.
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If I have an unknown susbstance and want to know if it will form a solution in
water what should I do?
a. | Put some in water and evaporate it | c. | Ask someone
else | b. | Check the internet | d. | Put some of the substance in water and see if it
dissolves |
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4.
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Which of the following steps is the BEST way to separate a mixture
of gravel, powder AND salt?
a. | Put the mixture on a screen and shake it -> add water -> use a paper filter to
separate the powder -> evaporate the water leaving the salt | c. | Add water -> use a screen to
separate the gravel -> use a paper filter to separate the powder -> evaporate the water leaving
behind the salt | b. | Add water -> use a paper filter to separate the powder and gravel -> pick the
gravel out of the powder -> evaporate the water leaving the salt | d. | Use a screen to separate the gravel -> pick
the salt particles out of the powder particles |
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5.
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What is the BEST way to separate a mixture of powder and water?
a. | Put the mixture through a paper filter | c. | none of the
above | b. | Put the mixture through a metal screen | d. | Evaporate the
water |
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6.
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Mrs Martinez is making lemondade for a party. She was in a hurry and
didn’t use the same amount of sugar in each pitcher. When Mrs. Carey tasted them this is
what she said:  Use the picture above to answer the
next 3 questions: Which pitcher do you think has the greatest concentration of sugar in
it? a. | Pitcher #1 | c. | Pitcher #2 | b. | Pitcher #3 | d. | They are all the
same |
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7.
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What could Mrs. Martinez do to the contents of Pitcher #1 to make it
taste better?
a. | Add more sugar | c. | Do nothing | b. | Add more water | d. | Add some salt |
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8.
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What could Mrs. Martinez to do the contents of Pitcher #2 to make it
taste better?
a. | Do Nothing | c. | Add more water | b. | Add more sugar | d. | Add some salt |
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9.
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Use the picture below to answer the next six questions  Mrs. Soy used salt and water to make mixtures 1, 3, and 4 as shown above. She
stirred each one and observed the results. What evidence does Mrs. Soy have that the salt and
water make a solution a. | Mr. Yerington told her so | c. | The solution is clear and there is
nothing on the bottom | b. | She just thinks it makes a
solution | d. | She doesn’t
have ANY evidence |
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10.
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Which solution is saturated?
a. | Solution 1 | c. | All of the above | b. | Solution 3 | d. | Solution 4 |
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11.
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How do you know the solution you selected is saturated?
a. | There is material at the bottom | c. | There is NO material at the
bottom | b. | It is a guess | d. | The solution is clear |
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12.
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Which solution is most concentrated
a. | Solution 3 | c. | Solution 1 | b. | Solution 4 | d. | They are the
same |
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13.
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If one spoon of salt weighs 6 grams how much does the salt AND water weigh in
mixture 3
a. | 118 grams | c. | 200 grams | b. | 18 grams | d. | 100 grams |
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14.
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How could Mrs. Soy separate the salt from the water in Mixture #1
a. | She could use a filter paper | c. | It can’t be
separated | b. | She could evaporate the water | d. | She could use a filter
screen |
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15.
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If Mrs. Soy make mixture #2 with two spoons of salt and 100 ml of water, what do
you think she would observe
a. | A murky solution with nothing at the bottom | c. | A murky solution with material at
the bottom | b. | A clear solution with nothing at the bottom | d. | A clear solution with material on the
bottom |
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Multiple Response
Identify one
or more choices that best complete the statement or answer the question.
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16.
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How is salt obtained today? (select ALL correct answers)
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17.
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Select each of the ways we used to separate mixtures:
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18.
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Check ALL the ways that salt is used TODAY:
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Numeric Response
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19.
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If I have 25 g of water and I add 10.3 g of salt and 5.9 g of sugar and mix them
to form a solution, how much will the solution weigh?
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Matching
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a. | skeletal remains of diatoms | h. | the amount of material dissolved in
a liquid | b. | salt | i. | a
special mixture formed when one material dissolves into another | c. | solid form of a
material that can be identified by it’s shape or pattern | j. | two or more substances that are combined and
can be separated | d. | the liquid part of a solution | k. | solid material that forms as a product of a
chemical reaction | e. | when a liquid becomes a gas | l. | substances that are made up of more than one
element | f. | a characteristic of an object such as size, color, shape, or
texture | m. | the solid material
that dissolves into a solvent | g. | the property that substances have of dissolving
in a solvent |
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20.
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diatomaceous earth
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21.
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crystals
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22.
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evaporate
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23.
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NaCl
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24.
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compound
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25.
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concentration
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26.
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mixture
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27.
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solvent
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28.
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properties
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29.
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solution
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30.
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solubility
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31.
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solute
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32.
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precipitate
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