Atoms/Periodic Table

The positively charged particle is called a _______.

The middle of the atom is called the ________.

The mass of protons or neutrons is _______ atomic mass units (amu).

The number of _______ is equal to the atomic number.

Adding an electron to this atom would cause the atom to have a _________ charge.

Adding a proton to this atom would change the ________.

Adding a neutron to this atom would change the ________.

Atoms are ________.

Atomic mass is the total number of ______ and ______.

The nucleus is made of _______ and neutrons.

The name of the element depends on the number of ________.

The particle with no charge is called a _______.

The atom in this picture has _______ electrons.

An electron has ________ charge.