Ch 10 review equations

The Stock system, a convention for naming ionic compounds that contain a metal with multiple oxidation states, uses __________.

• arabic numerals

• roman numerals

• coefficients

• none of these

The reaction 2NaCl + H₂SO₄--> Na₂SO₄ + 2HCl is a __________ reaction

• composition

• decomposition

• single replacement

• double replacement

Choose the type of reaction represented by the equation below.

NH₃ + CO₂ + H₂O--> NH₄(HCO₃).

• composition

• decomposition

• single replacement

• double replacement

Oxygen usually has an oxidation number of +2 when it forms compounds.

• true

• false

The oxidation number of H in HCl is +1.

• true

• false

A solid reactant or product is often followed by (s) in a chemical equation.

• true

• false

A liquid reactant or product is often followed by (l) in a chemical equation.

• true

• false

Catalysts are substances that change the rate of a reaction without undergoing permanent changes themselves.

• true

• false

In a single replacement reaction, the less reactive substance will replace the more reactive substance.

• true

• false

Which of the following is NOT evidence that a chemical reaction has occurred?

• a change in energy

• the formation of a precipitate

• the use of a catalyst

• a change in color