Unit 2 Review

The positively charged particle in an atom.

• Proton

• Neutron

• Electron

• Nucleus

The smallest part of any element. Made up of protons, neutrons and electrons.

• Atom

• AMU

• Ion

• Isotope

Identifies the number of protons in an atoms nucleus.

• Electron Cloud

• Atomic Theory

• Atomic Number

• Mass Number

The negatively charged particles in an atom

• Proton

• Electron

• Neutron

• Electron Cloud

The region inside an atom where electrons are likely to be found

• Proton

• Atom

• Electron Cloud

• Neutron

A charged atom

• Ion

• Isotope

• Proton

• Electron

Atoms of the same element that have different numbers of neutrons

• Ion

• Isotope

• Proton

• Electron

The total number of protons and neutrons in the nucleus of an atom

• Atomic Number

• Mass Number

• Atomic Theory

• Electron Cloud

The particles in the nucleus of an atom that do not have a charge (neutral)

• Proton

• Electron

• Neutron

• Ion

The horizontal row on the periodic table is called a

• group
• family
• period
• atomic number