AnswersELPGEQ3 MJ Science 3 - 2002100 HCPS v24Unit Test

Unit Test — Unit test Answers

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Suppose that a substance in a beaker is heated over a burner in a science lab. Which observation would most likely indicate that a chemical change has occurred in the substance?

A
If the substance is a liquid or solid, an increase in temperature would indicate a chemical change.
B
If the substance is a liquid, a change of some of the liquid to gaseous form would indicate a chemical change.
C
If the substance is a solid, a change of some of the solid to liquid form would indicate a chemical change.
D
If the substance is a liquid or solid, production of an odor would indicate a chemical change.
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If two items are equal in size, the denser one will

A
be lighter.
B
be heavier.
C
have more volume.
D
have less volume.
23

Which is the amount of matter in an object?

A
weight
B
mass
C
volume
D
pounds
24

The density of an object is .835 g/cm3. If its volume is 34 cm3, what is the mass of the object? (Density: D = )

Question illustration
A
.02 g
B
.41 g
C
28.39 g
D
40.72 g
25

Gold’s natural state has a definite shape and a definite volume. What is gold’s natural state(s)?

A
solid
B
liquid
C
solid or gas
D
liquid or gas

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