The Periodic Table

Carbon, with six protons and six neutrons, has a mass number of 12.

An _______ is the smallest part of an element that still has all properties of that element. 2

Atoms are made up of smaller subatomic particles.

Atoms are made up of smaller particles called ______________ particles.

The rows in the periodic table are called ______________.

Atomic ______________ refers to the number of protons in the nucleus of an atom.

Most elements can be easily changed into other elements.

The ______________ number is computed by adding together the protons and neutrons of an atom.

Matter is made up of tiny particles we cannot see.

Protons and neutrons are found in the nucleus.