Changes of State

Question 1

Melting butter is a physical change. Which best describes what is happening?

Revolt · Accepted Answer

The butter contains a new arrangement of atoms.

Question 2

What did you include in your response? Check all that apply.

Revolt · Accepted Answer

All matter is made up of particles that are constantly moving. The motion of the particles results in kinetic energy.; The part of total internal energy that can be transferred is thermal energy.; As temperature increases, the particles in a substance move faster and have greater kinetic and thermal energy.

Question 3

Question 3

Revolt · Accepted Answer

melting

Question 4

Define kinetic energy and thermal energy. Describe what happens to each as the temperature of a substances increases.

Revolt · Accepted Answer

All matter is made up of particles that are constantly moving. The motion of the particles results in kinetic energy. The part of total internal energy that can be transferred is thermal energy. As temperature increases, the particles in a substance move faster and have greater kinetic and thermal energy.

Question 5

Use the drop-down menus to determine the changes of state that are missing from the triangle. Label A: Label B: Label C:

Revolt · Accepted Answer

sublimation; Selection 1: sublimation; Selection 2: condensation; Selection 3: melting

Question 6

Use the drop-down menus to match each description with the appropriate change of state. Piles of snow turn to puddles of water. Puddles of water gradually dry up. Frost builds up on a window.

Revolt · Accepted Answer

melting; Piles of snow turn to puddles of water.: melting; Puddles of water gradually dry up.: evaporation; Frost builds up on a window.: deposition

Question 7

What happens to the atoms in a scoop of ice cream as it melts?

Revolt · Accepted Answer

They vibrate faster.

Question 8

Determine which change of state is being described in this passage.As the temperature decreases, the atoms lose energy. The atoms begin to move slower. They are held together by attractive forces, but are still able to slide past each other.

Revolt · Accepted Answer

gas to liquid

Question 9

Which changes of state are characterized by having atoms that gain energy? Check all that apply.

Revolt · Accepted Answer

melting; sublimation; vaporization

Question 10

Question 12

Revolt · Accepted Answer

condensation

Changes of State Answers

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