Unit Test — Unit test Answers

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23

A 1-L soda bottle contains dissolved carbon dioxide gas. Which bottle would have the highest concentration of dissolved gas?

A
a bottle that is sealed
B
a bottle that was opened 1 minute ago
C
a bottle that was opened 1 hour ago
D
a bottle that was opened 1 day ago
24

Which is true about dissolving a polar substance in water?

A
The solvent particles are all nonpolar molecules.
B
The solute particles are carried into the solution.
C
The solute particles have no attraction for the solvent molecules.
D
The solute particles are very different from the solvent molecules.
25

Which solution is a homogeneous mixture?

A
sand and water
B
salt and water
C
salad dressing
D
soil

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Unit Test — Unit test Answers — CA-Chemistry B-CR