HW 2 - CHANGING STATES OF MATTER

A solid is a state of matter that has a(n) _______________

• indefinite volume and an indefinite shape.

• definite volume and a definite shape.

• definite volume and an indefinite shape.

• indefinite volume and a definite shape.

In which state of matter are particles packed tightly together in fixed positions?

• gas

• solid

• plasma

• liquid

The change from liquid to solid, or the reverse of melting, is called ____________.

• freezing

• condensation

• boiling

• evaporation

The freezing point of water is the same as its ________________.

• evaporation point

• sublimation point.

• boiling point

• melting point

What is evaporation ?

• a liquid becoming a gas

• a gas becoming a solid

• a liquid becoming a solid

• a gas becoming a liquid

What is the freezing point of water?

• 32°C

• 100°C

• -10°C

• 0°C

An uncovered pot of soup is simmering on a stove, and there are water droplets on the wall above the back of the stove. What sequence can you infer has occurred?

• evaporation, then condensation

• condensation, then evaporation

• melting, then boiling

• freezing, then boiling

When water vapor gets cold, it turns to a...

• liquid

• ice

• gas

• solid

Why does a liquid take the shape of its container?

• Because it has changed from another state to a liquid

• Because this is a chemical property of liquids.

• Because the particles are not moving.

• Because the particles can slide past and around each other.

Which state(s) of matter takes the shape of the container they are placed in?

• Liquid and solid

• Liquid and gas

• Liquid only

• Gas only