Lab: Physical and Chemical Changes — Unit test Answers
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Which list includes only physical properties?
A
density, reactivity, and conductivityB
boiling point, conductivity, and colorC
color, odor, and flammabilityD
flammability, reactivity, and ductility22
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A cylinder at left with balls stacked near the bottom of the cylinder has an arrow leading to a cylinder at right cylinder with balls in a layer on the bottom of the cylinder.
A
Atoms gain energy as a solid changes to a liquid.B
Atoms gain energy as a solid changes to a gas.C
Atoms lose energy as a solid changes to a liquid.D
Atoms lose energy as a solid changes to a gas.23
Which statement describes a physical property of copper?
A
It reacts with strong acids.B
It can be reshaped by a force.C
It ignites at high temperatures.D
It can combine with oxygen.24
Which of these is an example of investigating an intensive property?
A
weighing sand in a bagB
measuring the length of wireC
determining if a rock is magneticD
recording the volume of water in a cylinder25
Michael has a substance that he puts in Container 1. The substance has a volume of 5 cubic meters. He then puts the substance in Container 2, and it now has a volume of 10 cubic meters. In which phase(s) is the substance?
A
solid or liquidB
liquid or gasC
liquidD
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