Physical Properties & Density, Chemical Changes

Front

What two types of measurements make up DENSITY?

Back

Mass and Volume.

Front

What is Evaporation?

Back

A Physical Change.

Front

What happens to particles when temperature increases?

Back

They move faster.

Front

Why does a higher temperature increase the rate of a reaction?

Back

It increases both the frequency and energy of particle collisions.

Front

What is evidence of a physical change?

Back

Shape Change.

Front

Define Density.

Back

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

Front

What is a Chemical Change?

Back

A process where substances combine or break apart to form new substances.

Front

Give an example of a Physical Change.

Back

Melting ice.

Front

What is the formula for calculating Density?

Back

Density = Mass / Volume.

Front

What happens to the density of a substance when it is heated?

Back

Generally, it decreases as the substance expands.