Properties of Materials Flashcard Review

Front

What is the formula for calculating density?

Back

Density (D) = Mass (M) / Volume (V)

Front

If a material has a mass of 6.75 g and a volume of 27.2 mL, what is its density?

Back

0.248 g/mL

Front

What is the index of refraction?

Back

A measure of how much light bends when it enters a material.

Front

Why can we see a silica glass rod in water?

Back

Because the silica rod and water have different indexes of refraction.

Front

What are polymers?

Back

Materials that can be easily shaped, stretched, and are sometimes elastic.

Front

What type of change occurs when a substance reacts with acid?

Back

Chemical change.

Front

What type of change occurs when a marshmallow is cut in half?

Back

Physical change.

Front

What is a physical change?

Back

A change that does not alter the chemical composition of a substance.

Front

What is a chemical change?

Back

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

Front

What are the properties of metals?

Back

Metals are typically good conductors of heat and electricity, malleable, and ductile.