Unit 2 Test (September 2025)

Front

What is a chemical change?

Back

An item that creates a new substance, releases light or heat.

Front

A physical change is a change

Back

in an item's properties like its shape, size or density.

Front

Which state of matter has particles that are tightly packed? Options: liquid, gas, solid

Back

solid

Front

When water is heated from liquid to gas....

Back

kinetic energy of the molecules increased.

Front

What happens to molecules when their kinetic energy increases?

Back

The molecules move faster

Front

Three containers with the same amount of the same material are shown below. Which container has the substance with the highest amount of energy?

Back

The container on the right

Front

Three containers with the same amount of the same material are shown below. Which container has the substance with the lowest amount of energy?

Back

The container on the left

Front

The slower the particles in a substance move,

Back

the colder it is.

Front

What state of matter?

Back

Solid

Front

What state of matter?

Back

Gas