Chemistry Final Exam

Front

How is the number of neutrons in the nucleus of an atom calculated?

Back

Subtract the atomic number from the mass number.

Front

What is the formula for calculating density?

Back

Density = Mass / Volume.

Front

What is the density of an object with a mass of 9g and a volume of 3cm³?

Back

3 g/cm³.

Front

Which subatomic particle has a positive charge?

Back

Protons.

Front

What is the charge of neutrons?

Back

Neutrons have no charge (neutral).

Front

What is the charge of electrons?

Back

Electrons have a negative charge.

Front

What are the three states of matter?

Back

Solid, Liquid, Gas.

Front

Which state of matter has a definite volume but no definite shape?

Back

Liquid.

Front

What happens to particles in a gas when energy is added?

Back

They move faster and spread apart.

Front

What is the process of changing from gas to liquid called?

Back

Condensation.