What should be done with chemical waste after completing an experiment?

• Leave it at your station

• Dispose of it properly

• Dump it in the trash

• Pour it down the sink

Tags

NGSS.MS-ESS3-3

Why are food and drink not permitted during an experiment?

• They could make your lab partner hungry

• They could attract ants and other insects

• They could make your instructor hungry

• They could contaminate the experiment

Which is true about liquids?

• The particles are tightly packed together and stay in a fixed position.
• The particles are far apart and move very quickly.
• The particles are far apart and stay in a fixed position
• The particles are close together, but are able to move around each other

Tags

NGSS.MS-PS1-4

What happens to particles when they are heated?

• They speed up and spread out
• They slow down and compress

Tags

NGSS.MS-PS1-4

Which description best describes the molecule spacing and movement within a solid?

• molecules move freely about the container

• molecules are closely packed together and vibrate in place

• molecules are close together, but can flow freely

Based on these observations, which container most likely holds a gas?

• Container 1

• Container 2

• Container 3

• Container 4

Which object has the highest density in this picture?

• A

• B

• C

I have two objects with the same volume but different masses. Which object will be more dense?

• The object with less weight.

• The object with more weight.

• The object with more mass.

• The object with less mass.

Tags

NGSS.MS-PS1-2

What does ice float in water?

• Ice cubes are less dense than water

• Ice cubes are more dense than water

How many liquids are more dense than water?

• 6

• 5

• 3

• 2

Tags

NGSS.MS-PS1-2