Unit 2 Review

Front

What happens to energy during the process of melting?

Back

Energy is absorbed.

Front

What happens to energy during the process of freezing?

Back

Energy is released.

Front

What is the property that holds molecules of a substance together?

Back

Cohesion.

Front

What is it called when a substance has a positive charge at one end and a negative charge at the other?

Back

Polarity.

Front

What is condensation?

Back

The process of changing from a gas to a liquid.

Front

What is the term for the attraction between molecules of the same substance?

Back

Cohesion.

Front

What is the term for the attraction between molecules of different substances?

Back

Adhesion.

Front

What is surface tension?

Back

The property of a liquid that allows it to resist an external force, due to cohesive forces between liquid molecules.

Front

What is the definition of specific heat?

Back

The amount of heat required to raise the temperature of one gram of a substance by one degree Celsius.

Front

What is the process of evaporation?

Back

The process of changing from a liquid to a gas.