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

Suppose you pour a glass of ice water and set it on the kitchen table. After a few minutes, the outside of the glass will be covered with drops of water. Why did this happen?

• Oxygen in the air cooled and condensed onto the cold glass.

• Water vapor in the air cooled and condensed onto the cold glass.

• Water vapor in the air cooled and evaporated onto the cold glass.

• Water seeped through pores in the glass.

Tags

NGSS.MS-PS1-4

When heat is added to a liquid, what occurs?

• Liquid molecules begin to condense to form a solid.

• Liquid molecules are being slowed down to become a gas.

• Liquid molecules speed up and begin to spread out to become a gas.

• Liquid molecules begin to slow down to become a solid.

Tags

NGSS.MS-PS1-4

How are solids different from liquids?

• particles in solids are moving freely around each other.
• particles in solids have no motion.
• particles in solids are vibrating in place.
• particles in solids have more motion than in liquids

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Change from gas to liquid...

• condensation
• evaporation
• expansion
• movement

Tags

NGSS.MS-PS1-4

Change from Liquid to Solid is call......

• fusion
• Freezing
• sublimation
• evaporation

Tags

NGSS.MS-PS1-4

change from liquid to gas is called....

• expansion
• evaporation
• condensation
• sublimation

Tags

NGSS.MS-PS1-4