Particle Theory

What is the definition of matter?

• Anything that has mass and occupies space

• Anything that is made from photons

• Anything that exists in the universe

• Anything that is solid

Which option has a fixed volume, but does NOT have a fixed shape?

• Gas

• Solid

• Liquid

In which state of matter is space between particles the SMALLEST?

• Solid

• Liquid

• Gas

What is correct about the molecules in CO2 gas?

• The molecules are close together.

• The molecules move very slowly.

• The molecules move randomly.

• The molecules all move with the same speed.

Particles are always moving.

• True

• False

Tags

NGSS.MS-PS1-4

When something goes from gas to liquid, it is called...

• Evaporation

• Condensation

• Deposition

• Freezing

Something that goes from liquid to gas is...

• Evaporating

• Melting

• Freezing

• Sublimation

Which option has a fixed volume and a fixed shape?

• Gas

• Solid

• Liquid

• Plasma

Which of the following statements about the particle of a gas is true?

• Gases can be compressed because their particles are smaller than those of liquids or solids.
• Gases can be compressed because there is plenty of space between their particles.
• Gases can be compressed because they have low boiling points.
• Gases can be compressed because their particles are more elastic than those of liquids or solids.

An inflated balloon is placed in a refrigerator. What happens to the gas inside the balloon?

• The particles move more slowly and become closer together.

• The particles move more slowly and become more distant.

• The particles move faster and become closer together.

• The particles move faster and become more distant.