Atom, Element, and Periodic Table

The atomic number tells the number of...

• protons

• neutrons

• electrons

Protons are equal to the number of ....

• protons

• neutrons

• electrons

The atomic mass is Protons PLUS .....

• protons

• neutrons

• electrons

The center of the atom.

• energy level

• nucleus

• cell

Electrons are swirling around on...

• nuclei

• energy levels

• elements

Protons have this charge.

• positive

• neutral

• negative

Neutrons have this charge.

• positive

• neutral

• negative

Electrons have this charge.

• positive

• neutral

• negative

The group/family number tells this...

• the number of TOTAL electrons

• the number of OUTERMOST electrons

The period or row number tells this.

• The number of electrons.

• The number of energy levels.