G11 Chemistry Revision (S1M2)

Which of the following processes represents a physical change?

• acid base neutralisation

• metal displacement reaction

• boiling ethanol

• Combustion of magnesium

Physical and chemical changes are different processes. Which of the following row correctly identifies the characteristics of each one?

• A

• B

• C

• D

A student reacts a metal carbonate with nitric acid and measures the volume of carbon dioxide gas released at regular intervals. The results of the experiment are shown in the graph.

Between which two measurements was the reaction the fastest?

• 0 and 2 minutes

• 2 and 4 minutes

• 4 and 6 minutes

• 10 and 12 minutes

Which of the following statements explains how increasing temperature increases the rate of a reaction?

• Increasing the temperature increases the kinetic energy of the particles so there are a smaller number of successful collisions.

• Increasing the temperature increases the kinetic energy of the particles so there are a larger number of unsuccessful collisions.

• Increasing the temperature decreases the kinetic energy of the particles so there are a larger number of successful collisions.

• Increasing the temperature increases the kinetic energy of the particles so there are a larger number of successful collisions.

A student was investigating the rate of reaction between acid and metals. The experimental set-up is shown below.

Which test tube would give the quickest reaction?

• A

• B

• C

• D

An energy level diagram is shown below.

Which statement is correct for the points labeled 1,2 and 3?

• 1 (activation energy), 2 (energy change), 3 (reactants)

• 1 (energy change), 2 (activation energy), 3 (products)

• 1 (energy change), 2 (activation energy), 3 (reactants)

• 1 (activation energy), 2 (energy change), 3 (products)

Which row correctly describes oxidation in terms of oxygen, electrons, and oxidation state?

• A

• B

• C

• D

Which row correctly describes the process of reduction in terms of oxygen, electrons, and oxidation state?

• A

• B

• C

• D

Three reactions are shown below.

Which row correctly describes the process each reactant molecule undergoes?

• A

• B

• C

• D

What is the oxidation state of Fe in Fe₂O₃?

• +2

• -2

• -3

• +3