22-23 S2 G9 EOS review

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• a gas contracts

A gas

• has a definite shape but no definite volume
• has a definite volume but no definite shape
• has fast-moving particles

Which state of matter has a definite shape?

• solid
• liquid
• gas

What is happening when my ice cream changes from a solid to a liquid?

• freezing

• melting

• burning

Particles of a liquid

• are tightly packed together and stay in a fixed position.

• are free to move around one another but still touch.

What is condensation?

• gas to solid

• gas to liquid

• liquid to solid

What am I? I have a fixed mass, a fixed volume, I cannot be squashed and I have a shape that changes to fit the bottom of my container?

• solid
• liquid
• gas
• plasma

An inflated balloon is placed in a refrigerator. Which statement describes the movement of the gas particles in the balloon?

• The particles move more slowly and become closer together.
• The particles move more slowly and become further apart.
• The particles move faster and become closer together.
• The particles move faster and become further apart. 

Which point of the particle theory is depicted by this picture?

• all matter is made of particles
• The attraction between particles increases as they get closer
• particles are in constant, random motion
• particles speed up as heat is added

A student added sugar to a cup of water and stirred with a spoon.  After 10 minutes you could not see the sugar anymore.  What happened to the sugar?

• the sugar evaporated
• the sugar dissolved
• the sugar was magnetic