Chemistry Chapter 7 Terminology Pre-Test

What is a driving force for a chemical reaction to proceed?

• A solid wants to form

• An increase in volume

• A color change occurs

• A decrease in temperature

What type of reaction is characterized by the combination of oxygen with another substance, releasing energy in the form of heat and light?

• Decomposition reaction

• Synthesis reaction

• Single replacement reaction

• Combustion reaction

Which of the following is NOT a category for classifying chemical reactions?

• Oxidation-reduction reaction

• Triple replacement reaction

• Decomposition reaction

• Double replacement reaction

In a synthesis reaction, how many products are formed?

• Depends on the reactants

• Only one

• None

• Two or more

What happens in a single replacement reaction?

• A compound breaks down into two or more elements or new compounds

• Two compounds exchange ions

• The atoms of one element replace the atoms of another element in a compound

• Two or more substances react to produce a single product

What is formed when an acid reacts with a base?

• A gas

• A precipitate

• Water

• An electrolyte

Which of the following is a strong base?

• HCl

• H2SO4

• HNO3

• NaOH

What is the net ionic equation for the reaction between hydroiodic acid and aqueous lithium sulfide?

• 2H+(aq) + S-2(aq) → H2S(g)

• 2Na+(aq) + 2Cl-(aq) → 2NaCl(aq)

• 2Li+(aq) + 2I-(aq) → 2LiI(aq)

• H+(aq) + OH-(aq) → H2O(L)

What is the result of a double replacement reaction?

• A change in color only

• Two elements

• A gas, a liquid, or a precipitate

• A single product

What are spectator ions?

• Ions that do not actually participate in the reaction, but remain in solution

• Ions that change color during the reaction

• Ions that participate in the reaction

• Ions that precipitate out of solution