Chemistry Test Review

Front

What is the pH of a neutral substance?

Back

7

Front

What does it mean when oil and water separate into layers?

Back

It demonstrates the physical property of density.

Front

What type of solution is a Kool-Aid mix that is dark in color and very sweet?

Back

Concentrated solution.

Front

How many hydrogen atoms are in a water molecule (H₂O)?

Back

2

Front

What is the result of a chemical change?

Back

A new substance.

Front

What is the definition of density?

Back

Density is the mass of a substance divided by its volume.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change does not alter the substance's chemical composition, while a chemical change does.

Front

What is an example of a physical change?

Back

Melting ice.

Front

What is an example of a chemical change?

Back

Burning wood.

Front

What is the formula for calculating density?

Back

Density = Mass/Volume.