Rates of Reaction Quiz

What is the equation for the decomposition of hydrogen peroxide, and name a suitable catalyst for this decomposition?

Which method can be used to measure the rate of reaction for magnesium and hydrochloric acid?

• Measuring the change in colour

• Measuring the change in mass

• Measuring the gas volume produced

• Measuring the temperature change

Which method can be used to measure the rate of reaction for calcium carbonate and hydrochloric acid?

• Measuring the change in mass

• Measuring the change in colour

• Measuring the temperature change

• Measuring the pH change

Which method can be used to measure the rate of reaction for sodium thiosulfate solution and hydrochloric acid?

• Measuring the change in mass

• Measuring the gas volume produced

• Observing the time taken for an X to disappear

• Measuring the temperature change

What apparatus is used to measure the change in mass during the reaction of marble chips with hydrochloric acid?

• Thermometer

• Gas syringe

• Balance

• Stopwatch

What effect does increasing the temperature have on the rate of reaction?

• Decreases the rate of reaction

• No effect on the rate of reaction

• Increases the rate of reaction

• Stops the reaction

How does increasing the concentration of reactants affect the rate of reaction?

• Decreases the rate of reaction

• No effect on the rate of reaction

• Increases the rate of reaction

• Stops the reaction

What is the effect of decreasing the particle size on the rate of reaction?

• Decreases the rate of reaction

• No effect on the rate of reaction

• Increases the rate of reaction

• Stops the reaction

What is a catalyst?

• A substance that decreases the rate of a reaction

• A substance that increases the rate of a reaction without being used up

• A substance that is used up in a reaction

• A substance that changes the colour of a reaction

What is the role of a catalyst in a chemical reaction?

• Increases the activation energy

• Provides an alternative pathway with higher activation energy

• Provides an alternative pathway with lower activation energy

• Decreases the concentration of reactants