Mid-term Study Aid

Front

What is the law of conservation of mass?

Back

Matter cannot be created or destroyed.

Front

How can a colloid be distinguished from a homogeneous mixture?

Back

By indirect evidence.

Front

What is the amount of force exerted on an object per unit of area?

Back

Pressure.

Front

A gas in a balloon has a definite ______ even when the temperature changes.

Back

Mass.

Front

Most metals are:

Back

All of the above (malleable, ductile, good conductors of heat and electricity).

Front

What is density?

Back

Density is the mass of an object divided by its volume.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance, while a chemical change alters its composition.

Front

What is an example of a homogeneous mixture?

Back

Saltwater.

Front

What is an example of a heterogeneous mixture?

Back

Salad.

Front

What is the formula for calculating pressure?

Back

Pressure = Force / Area.