An atom is the smallest unit of matter.
10pts
Protons are negatively charged particles found in the nucleus of an atom.
10pts
Electrons are found in the nucleus of an atom.
10pts
The atomic number of an element is determined by the number of protons in its nucleus.
10pts
Neutrons have no charge.
10pts
All atoms of an element have the same number of neutrons.
10pts
The nucleus of an atom contains both protons and electrons.
10pts
Atoms can join together to form molecules.
10pts