Unit 4: Ionic Compounds Review

Front

What type of bond is formed between calcium (Ca) and nitrogen (N)?

Back

Ionic

Front

What type of bond is predicted to form between selenium (Se) and chlorine (Cl)?

Back

Covalent

Front

What is the name of the compound Fe(OH)₂?

Back

Iron (II) hydroxide

Front

What do subscripts in a chemical formula indicate?

Back

The number of atoms of each element in a molecule.

Front

What is the name of the compound Ca₃(PO₄)₂?

Back

Calcium phosphate.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve the sharing of electrons between atoms.

Front

What is the charge of a calcium ion (Ca²⁺)?

Back

+2

Front

What is the formula for the hydroxide ion?

Back

OH⁻

Front

How do you determine the oxidation state of an element in a compound?

Back

By using the rules for oxidation states, such as the charge of the ion and the known oxidation states of other elements in the compound.

Front

What is the significance of the parentheses in the formula Fe(OH)₂?

Back

They indicate that the hydroxide ion (OH⁻) is a polyatomic ion and that there are two of them in the compound.