Phase Change

When a substance melts, the kinetic energy _____________.

• decreases
• stays the same
• increases
• decreases then increases

Tags

NGSS.MS-PS1-4

When molecules flow around each other, they are in this phase

• solid
• liquid
• gas
• plasma

Tags

NGSS.MS-PS1-4

Sam had a solid and added energy to it. What did the molecules look like?

• The molecules moved in place.
• The molecules moved away from each other.
• The molecules didn't move.
• The molecules moved around each other.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the energy that an object has because it is moving?

• kinetic
• potential
• electric
• wind

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What takes place when a liquid changes to a gas?

• condensation

• melting

• vaporization

• freezing

Tags

NGSS.MS-PS1-4

What takes place when a solid changes to a liquid?

• condensation
• melting
• evaporation
• freezing

Tags

NGSS.MS-PS1-4

What is the average kinetic energy of a substance called?

• volume
• temperature
• pressure
• movement

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What takes place when a liquid changes to a solid?

• condensation
• melting
• evaporation
• freezing

Tags

NGSS.MS-PS1-4

What takes place when a gas changes to a liquid?

• melting
• freezing
• evaporation
• condensation

Tags

NGSS.MS-PS1-4

Before: molecules move around each other, After: molecules move in place

• Before, the substance was a solid and later a liquid.
• Before,the substance was a gas, and later a liquid.
• Before, the substance was a liquid and later a solid.
• Before,the substance was a liquid, and later a gas.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4