Cu⁺  +   O^-2

• Cu₂O
• Cu₂O₂
• Cu⁺²O
• CU⁺¹O₃

Fe⁺³   +    S^-2

• FE⁺⁴(S)⁼³
• Fe²S⁴
• Fe₂S₃
• Fe³S²

Ca⁺²  +  Br^-

• Ca₂Br₂
• CaBr
• Ca(br)₂
• CaBr₂

Ionic bonding always takes place between 

• ions of opposite electrical charge
• ions of the same electrical charge
• ions of the same size
• ions of the same size and opposite charge

The chemical formula for an ionic compound of aluminum and chlorine is

• AlCl.
• ClAl.
• AlCl₃.
• Al₃Cl.

MgF₂

• magnesium fluoride
• manganese Phosphide
• magnesium(III) fluoride
• magnesium fluoride(II)

The force of attraction that holds atoms or ions together

• covalent compound
• chemical bond
• ionic compound
• valence electron

compound made of oppositely charged ions

• covalent compound
• chemical bond
• ionic compound
• valence electron

located in the outermost energy level of an atom; their behavior determines what kind of compound is formed

• covalent compound
• chemical bond
• ionic compound
• valence electrons

If it is brittle, dissolves easily in water, has a high melting point, and conducts electric current, it is a(n)

• valence electron
• ionic compound
• covalent compound
• sugar