Rates of reaction

Particles that are at a higher temperature move (a)   then particles with a low temperature

How can we measure the rate of reaction?

• Time the bubbles

• Measure how quickly reactants are used up

• Measure rate at which products are made

• Just look and see what is happening

What is the name of a special substance which can be added to a reaction to increase the rate of reaction?

(a)  

What is needed for particles to react?

• They must collide

• They must have enough energy

• They must be elements

• They must be compounds

During a forward reaction, products are converted into reactants.

• True

• False

The inhibitor reduces the amount of catalyst available for a reaction.

• True

• False

A student investigated the rate of reaction of calcium carbonate with dilute hydrochloric acid. Every minute, the student recorded the total volume of carbon dioxide produced, until some time after the reaction was complete.
Which graph shows the correct results? 

• A
• B
• C
• D

Order the letters from highest to lowest rate of reaction.

• A > B > C > D
• A > BC > D (B and C have the same rate)
• A > B > CD (C and D have the same rate)
• D > C > B > A

What type of reaction is this?

• Endothermic
• Exothermic

Reactions slow or even stop when a catalyst is poisoned.

• True

• False