Atoms

Front

The mass number of an atom is the mass of ______ + _____

Back

protons + neutrons

Front

Describes what an atom looks like

Back

Atomic Theory

Front

The positively charged particle in an atom.

Back

Proton

Front

The mass number is always larger than the atomic number (except for Hydrogen).

Back

TRUE

Front

The center of an atom where its neutrons and protons are is called the _____________.

Back

nucleus

Front

What is the smallest unit of matter that retains the properties of an element?

Back

Atom

Front

What are the three main subatomic particles?

Back

Protons, Neutrons, Electrons

Front

What is the charge of a neutron?

Back

Neutral (no charge)

Front

What is the charge of an electron?

Back

Negative

Front

What is the charge of a proton?

Back

Positive