Changes in Energy at the Molecular Level

These molecules represent which state of matter?

• Solid

• Liquid

• Gas

What phase change is happening between point B and C?

• Condensating

• Melting

• Evaporating

Tags

NGSS.MS-PS1-4

What phase change is occurring between points D and E?

• Freezing
• Evaporating
• Melting 

Tags

NGSS.MS-PS1-4

Describe the molecules in a gas.

• Tightly compact, vibrating
• Close together, slightly moving
• Far apart, moving fast

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

As thermal energy increases, what happens to the movement of the molecules?

• Increases
• Decreases
• Stays the same 

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

If the movement of the atoms increases, you can assume the temperature was _________.

• Increased

• Decreased

• Not Changes

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

These molecules represent which state of matter?

• Solid
• Liquid
• Gas

Tags

NGSS.MS-PS1-4

What phase change would be presented by letter A?

• Melting
• Freezing
• Evaporating
• Condensing

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What phase change would be presented by letter B?

• Melting
• Freezing
• Evaporating
• Condensing

Tags

NGSS.MS-PS1-4

To change a solid to a liquid, what do you add?

• heat
• water
• cold
• mass

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4