AP Chemistry Unit 4 Review

Front

What are the coefficients that balance the equation N₂ + H₂ → NH₃?

Back

1, 3, 2

Front

What are spectator ions?

Back

Spectator ions do not undergo chemical change during a chemical reaction.

Front

What precipitate forms when lead (II) nitrate is mixed with sodium chloride?

Back

Lead (II) chloride.

Front

In the reaction Zn + H₂O → ZnO₂ + H₂, which element is oxidized?

Back

Zinc.

Front

What is the oxidation number of P in K₃PO₄?

Back

+5.

Front

Define oxidation in terms of electron transfer.

Back

Oxidation is the loss of electrons during a chemical reaction.

Front

Define reduction in terms of electron transfer.

Back

Reduction is the gain of electrons during a chemical reaction.

Front

What is a precipitate?

Back

A precipitate is an insoluble solid that forms during a chemical reaction.

Front

What is the law of conservation of mass?

Back

The law states that mass is neither created nor destroyed in a chemical reaction.

Front

What is a limiting reactant?

Back

The limiting reactant is the substance that is completely consumed in a chemical reaction, limiting the amount of product formed.