PS U6 Review - Matter, Solutions & Density

Front

What is matter?

Back

Matter is anything that has mass and takes up space.

Front

What are the three states of matter?

Back

Solid, liquid, and gas.

Front

What is density?

Back

Density is the mass of an object divided by its volume (Density = Mass/Volume).

Front

How does temperature affect the state of matter?

Back

Increasing temperature can change solids to liquids (melting) and liquids to gases (evaporation).

Front

What is a solution?

Back

A solution is a homogeneous mixture where one substance is dissolved in another.

Front

What is a colloid?

Back

A colloid is a mixture where tiny particles are dispersed throughout another substance but do not settle out.

Front

What is a suspension?

Back

A suspension is a heterogeneous mixture where solid particles are suspended in a liquid and can settle out over time.

Front

What is the freezing point of water?

Back

The freezing point of water is 0 degrees Celsius (32 degrees Fahrenheit).

Front

What is the boiling point of water?

Back

The boiling point of water is 100 degrees Celsius (212 degrees Fahrenheit) at standard atmospheric pressure.

Front

What happens to the density of most substances when they are heated?

Back

Most substances decrease in density when heated because their particles move apart.