IAPS End of Unit C Practice Test

During which interval is the substance entirely a solid?

• A

• B

• C

• D

• E

Answer explanation

The substance is only in one state of matter during the intervals on the graph that have a slope. It will be a solid during the sloped interval that is at the lowest temperature.

Tags

NGSS.MS-PS1-4

During what interval is the substance entirely a liquid?

• A

• B

• C

• D

• E

Answer explanation

The substance is only in one state of matter during the intervals on the graph that have a slope. It will be a liquid during the sloped interval that is at a medium temperature (warmer than the solid but cooler than the gas).

Tags

NGSS.MS-PS1-4

During what interval is the substance entirely a gas?

• A

• B

• C

• D

• E

Answer explanation

The substance is only in one state of matter during the intervals on the graph that have a slope. It will be a gas during the sloped interval that is at the highest temperature.

Tags

NGSS.MS-PS1-4

What is the melting point of the substance?

• -100 °C

• 0 °C

• 100 °C

• 140 °C

Answer explanation

The flat parts of the graph are the places where the substance changes state of matter. The melting point occurs at the flat part that occurs at a lower temperature.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the boiling point of the substance?

• -100 °C

• 0 °C

• 100 °C

• 140 °C

Answer explanation

The flat parts of the graph are the places where the substance changes state of matter. The melting point occurs at the flat part that occurs at a higher temperature.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which beaker has the highest particle motion?

• 1

• 2

• 3

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which beaker has the lowest particle motion?

• 1

• 2

• 3

Tags

NGSS.MS-PS1-4

Which beaker represents the state of matter with the highest energy level?

• 1

• 2

• 3

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which beaker represents the state of matter with the lowest energy level?

• 1

• 2

• 3

Tags

NGSS.MS-PS1-4

Which beaker represents the particles in a solid?

• 1

• 2

• 3

Answer explanation

Particles in a solid are closely packed together.