Physical Science - Atoms

The building blocks of matter.

• molecules

• atoms

• protons

• Valence electrons

Pure substances that make up all kinds of matter.

• elements

• atoms

• molecules

All atoms of the same elements have the same number of these.

• protons

• electrons

• neutrons

Particle of the atom with a positive charge.

• proton

• neutron

• electrons

Particle of the atom with no charge.

• proton

• electron

• neutron

Particle of the atom with a negative charge.

• protons

• neutron

• electron

Particle located at the center of the atom.

• proton

• electron

• nucleus

• neutron

What is located in the nucleus?

• protons and electrons

• protons and neutrons

• electrons and neutrons

Neutral atoms have the same number of these.

• protons and neutrons

• protons and electrons

• electrons and neutrons

The nucleus has a positive charge because of these.

• protons

• neutrons

• electrons