Properties of Elements

Equal to the number of protons

• Mass Number
• Atomic Number
• Atomic Mass
• Number of neutrons

Equals the number of protons & neutrons

• Atomic Number
• Valence Electrons
• 8 electrons
• Mass Number

mass # - atomic #

• # of neutrons
• # of protons
• # of electrons
• # of valence electrson

Negative subatomic particle

• Proton
• Electron
• Neutron
• Quark

Electrons on the outermost energy level of an atom

• Energetic electrons
• Revolving electrons
• Valence electrons
• Models

A subatomic particle that has a positive charge

• Neutron
• Electron
• Quark
• Proton

A subatomic particle that has no charge

• Proton
• Electron
• Quark
• Neutron

Found in the nucleus

• Protons and Electrons
• Electrons
• Protons and Neutrons
• Neutrons and Electrons

Number of electrons on the 1st energy level

• 8
• 2
• 18
• 1

Number of electrons on 2nd energy level

• 2
• 18
• 8
• 1