Form V Rates of Reaction Review (Jan 2021)

What is the definition for the rate of a chemical reaction.

• Change in concentration over time

• Change in concentration of the reactants or products per unit time

• Change in concentration of any one reactant or product per unit time

• Change in concentration of all reactants or products per unit time

In order for a reaction to occur, particles must...

• Collide

• Be in contact with each other

• Have enough energy

• All of the above

A collision which results in the formation of products is called...

• Successful

• Excellent

• Effective

• Efficient

The name given to the specific energy required for an effective collision to occur....

• Effective energy

• Activation energy

• Successful energy

• Chemical energy

In this reaction profile, what is quantity A?

• Activation energy

• Reaction energy

• Collision energy

• Effective energy

Does this reaction profile diagram represent an exothermic or endothermic reaction?

• Exothermic

• Endothermic

Does this reaction profile diagram represent an exothermic or endothermic reaction?

• Exothermic

• Endothermic

Complete this sentence...the higher the activation energy,...

• The faster the reaction

• The slower the reaction

Complete this sentence.....the lower the activation, ......

• The faster the reaction

• The slower the reaction

What is the formula for hydrogen peroxide?

• H₂O₂

• H₂O

• HO₂

• 2H2O