Density, Chemical and Physical Changes Review

Front

What is density?

Back

Density is the mass of an object divided by its volume, often expressed in grams per cubic centimeter (g/cm³).

Front

What two measurements are needed to calculate density?

Back

Mass and Volume.

Front

What happens to objects with a density less than that of water?

Back

They float on water.

Front

What happens to objects with a density greater than that of water?

Back

They sink in water.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

What is a chemical change?

Back

A change that results in the formation of new chemical substances.

Front

Give an example of a physical change.

Back

Melting ice is an example of a physical change.

Front

Give an example of a chemical change.

Back

Rusting of iron is an example of a chemical change.

Front

What is the formula for density?

Back

Density = Mass / Volume.

Front

What is the state of matter when a solid turns into a liquid?

Back

Melting.