12-17 Physical/Chemical Change Test

Front

What are physical properties?

Back

Physical properties can be observed and measured without changing the substance's identity.

Front

What happens to red litmus paper in a substance with a pH of 2?

Back

Red litmus paper will stay red.

Front

What is boiling water considered?

Back

Boiling water is considered a physical change, because a new substance is not formed.

Front

How do you calculate density?

Back

Density = mass/volume.

Front

What is the density of a substance with a mass of 36g and a volume of 51cm³?

Back

Density = 36g / 51cm³ = 0.706g/cm³.

Front

What are properties that don’t involve changing the atoms and molecules of a substance?

Back

These are called physical properties.

Front

What is a chemical change?

Back

A chemical change occurs when a substance transforms into a different substance with different properties.

Front

Give an example of a physical change.

Back

Melting ice is an example of a physical change.

Front

What is an example of a chemical change?

Back

Burning wood is an example of a chemical change.

Front

What happens to blue litmus paper in an acidic solution?

Back

Blue litmus paper turns red in an acidic solution.