Atoms

Front

All matter is made of _________.

Back

atoms

Front

The amount of matter in an object (like weight) is its...

Back

mass

Front

What is this table?

Back

Periodic Table of Elements

Front

A proton has a ___________ charge.

Back

positive

Front

What is the symbol for Krypton?

Back

Kr

Front

What are the three main subatomic particles?

Back

Protons, Neutrons, Electrons

Front

What is the charge of an electron?

Back

negative

Front

What is the center of an atom called?

Back

nucleus

Front

What is the mass of a neutron compared to a proton?

Back

approximately the same

Front

What is the atomic number of an element?

Back

the number of protons in the nucleus