A student moved an unknown material from a small to a large cup. It had the same shape and volume when moving between cups. What state was the material?

• liquid
• solid
• gas
• Juice

A teacher puts a wax candle in a jar. Then, the teacher heats the jar as shown. After a few minutes of heating, the candle has melted. What state is the melted candle?

• It is a solid because it fills the jar.
• it is a gas because it filled the jar.
• It is a solid because it does not take shape.
• It is a liquid because it takes the shape of the jar.

Tags

NGSS.MS-PS1-4

Which is an example of melting?

• Water turning into ice.
• Water turning into vapor.
• Mixing up a salad with ingredients.
• Butter changing into liquid in a warm pan.

Tags

NGSS.MS-PS1-4

Which two characteristics describe a gas?

• No definite shape, but a definite volume
• No definite shape, and no definite volume
• A definite shape and a definite volume

Which term describes when a substance is changed from a liquid to a gas?

• Condensation
• Evaporation
• melting
• freezing

Tags

NGSS.MS-PS1-4

Which motion describes molecules in a solid.

• Moving quickly
• Moving loosely
• Barely  moving
• Moving to fill a container

When something is heated, molecules
____________.

• Move faster
• Move slower
• Move the same
• Do not change speed or direction

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When you ________ a liquid, molecules
__________.

• freeze, slow down
• freeze, speed up
• heat, slow down

Tags

NGSS.MS-PS1-4

A state change (ex. melting, evaporating, freezing) is a __________

• physical change

• chemical change

• not a change

• permanent

Tags

NGSS.MS-PS1-4

On a hot day , a puddle disappeared on the playground. What happened?

• The sun's radiation evaporated the puddle.

• The science teacher went out and dried the puddle.

• The puddle melted.

• The puddle lost heat energy.

Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4