Phase Changes

Question 1

Energy is released during which phase changes? Check all that apply.

Revolt · Accepted Answer

condensing; depositing; freezing

Question 2

In a lab, methane and nitrogen are cooled from -170°C to -200°C. The methane freezes and the nitrogen

Revolt · Accepted Answer

condenses

Question 3

When gold is heated to 2,856°C it changes from a liquid to a .

Revolt · Accepted Answer

gas

Question 4

Use the table to answer the questions below.When the temperature in a room increases from 25°C to 33°C, changes from a solid to a liquid.

Revolt · Accepted Answer

gallium; Selection 1: gallium; Selection 2: condenses; Selection 3: gas

Question 5

Use the information in the table to describe the temperature-vs.-time diagrams.Which number on the graph represents a solid?

Revolt · Accepted Answer

1; Selection 1: 1; Selection 2: 2; Selection 3: 4

Question 6

Considering the chart shown, at what temperature does the substance boil?

Revolt · Accepted Answer

2,200ºC

Question 7

Which number on the graph represents the phase change melting?

Revolt · Accepted Answer

2

Question 8

Which number on the graph represents the phase change boiling?

Revolt · Accepted Answer

4

Phase Changes Answers