LS3.2

What change of state is happening in the picture?

• solid to liquid

• gas to liquid

• liquid to solid

• liquid to gas

Tags

NGSS.MS-PS1-4

What is happening to the balloon?

• The balloon is being compressed, so the air molecules move closer together making the balloon smaller.

• The balloon is inflating because the molecules are bigger than they were taking up more space.

• The balloon is expanding, so the air molecules move further apart making the balloon smaller.

Tags

NGSS.MS-PS1-4

When we heated the chocolate bars in class, what was the first change of state that occurred?

• solid to liquid

• liquid to gas

• solid to gas

Tags

NGSS.MS-PS1-4

How are the molecules of a gas arranged?

• very spread out

• slightly spread out

• tightly packed

List the steps of the scientific method

d

e

f

c

b

a

Form a hypothesis

Ask a question

Draw conclusions

Analyze results

Communicate results

Conduct experiment

Tags

NGSS.MS-PS2-2

Which letter represents amplitude? (a)  

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS4-1

How are the molecules of a solid arranged?

• very spread out

• slightly spread out

• tightly packed

What happens when air is cooled down?

• The molecules speed up and spread out.

• The molecules slow down and move closer together.

• The molecules stay the same speed and move closer together.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Why can you smell the cookies more than before they were baked?

• Thermal energy was removed by the oven causing the cookie dough to change from a liquid to a solid.

• Thermal energy was added by the oven causing some of the cookie dough to change from a solid, to liquid, to gas.

• Thermal energy was added causing the cookies to melt.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is evaporation?

• solid changes to a gas

• liquid changes to a gas

• gas changes to a liquid

• solid changes to a liquid

Tags

NGSS.MS-PS1-4