AnswersChemistryPhase Changes

Pretest Answers

10 verified answers1 views
1
Free Preview

Which best describes the energy change that takes place during deposition?

A
Heat energy is slowly gained by the substance.
B
Heat energy is quickly absorbed by the substance.
C
Heat energy is released by the substance.
D
Heat energy is maintained by the substance.
3

Which best describes the energy change that takes place during deposition?

A
Heat energy is slowly gained by the substance.
B
Heat energy is maintained by the substance.
C
Heat energy is released by the substance.
D
Heat energy is quickly absorbed by the substance.
4

When does carbon dioxide absorb the most heat energy?

A
during condensation
B
during deposition
C
during freezing
D
during sublimation
5

Which example involves a phase change in which heat energy is released by the substance?

A
cooking a pot of soup
B
melting ice under sunlight
C
freezing ice cream
D
watching frost disappear into air
8

Consider the statement. “When nitrogen is liquefied, heat is released.” Is this statement true or false?

A
It is false because nitrogen cannot absorb enough heat to liquefy.
B
It is false because nitrogen absorbs heat when it is liquefied.
C
It is true because heat is released when a gas changes to a liquid.
D
It is true because heat is released when a liquid changes to a gas.
9

Which energy change occurs during boiling?

A
Heat energy is absorbed by the substance.
B
Heat energy of the substance remains the same.
C
Some heat energy of the substance is lost.
D
Most heat energy of the substance is lost.

Did you find these answers helpful?

Pretest Answers — Chemistry