Structure of Atoms and the Periodic Table

Front

Most of the mass of an atom is found in the ______.

Back

nucleus

Front

Which of the labeled structures is a proton?

Back

c

Front

Which of the labeled structures is an electron?

Back

a

Front

The number 18 represents the ______.

Back

Atomic number

Front

What is the chemical symbol of this element?

Back

Au

Front

What are the three main subatomic particles of an atom?

Back

Protons, Neutrons, Electrons

Front

What is the charge of a proton?

Back

Positive

Front

What is the charge of an electron?

Back

Negative

Front

What is the charge of a neutron?

Back

Neutral

Front

Where are protons and neutrons located in an atom?

Back

In the nucleus