UNIT 3 REVIEW: Chemistry

Two or more elements that are chemically combined is a(n)

• Compound

• Element

• Bond

• Solution

A ________________ tells what elements and how many of each element are in a unit of that compound.

• Chemical formula

• Reactant

• Product

• Coefficient

This rule states that atoms will gain, lose, or share electrons in order to have 8 electrons in their outer shell

• Octet Rule

• Oxidation rule

• Conservation of Mass

• Conservation of Energy

A force that holds atoms together is a

• Chemical Bond

• Chemical Reaction

• Chemical Equation

• Chemical formula

When atoms transfer electrons in order to be stable it is a (n) ____________

• Ionic bond

• Covalent bond

• Oxidation number

• Ion

When atoms share electrons in order to be stable it is a (n)

• Ionic bond

• Covalent bond

• Oxidation number

• Ion

Charged atoms that have gained or lost electrons are

• Ions

• Ionic bonds

• Covalent bonds

• Oxidation numbers

The charge on an ion is the

• Ionic bond

• Covalent bond

• Oxidation number

• Octet

An atom with a positive charge is a (n)

• Ion

• Cation

• Anion

• Oxidation number

An atom with a negative charge is a(n)

• Ion

• Cation

• Anion

• Oxidation number