Year 10 Chemical Reactions Quiz

Which of the following is an example of a decomposition reaction?

Which factor does NOT affect the rate of a chemical reaction?

• Temperature

• Concentration of reactants

• Colour of reactants

• Surface area of reactants

• Synthesis (Combination)

• Decomposition

• Single displacement

• Double displacement

Which of the following is an example of an exothermic reaction?

• Photosynthesis

• Melting ice

• Combustion of methane

• Evaporation of water

Which statement best describes a redox reaction?

• A reaction where acids and bases neutralise each other

• A reaction involving the transfer of electrons

• A reaction where a solid forms from two solutions

• A reaction that absorbs heat

What is the effect of increasing the temperature on the rate of a chemical reaction?

• It decreases the rate

• It has no effect

• It increases the rate

• It stops the reaction

Which of the following is a single displacement reaction?

Which of the following will NOT increase the rate of a reaction?

• Increasing the concentration of reactants

• Decreasing the temperature

• Using a catalyst

• Increasing the surface area of a solid reactant

• Magnesium

• Hydrogen

• Chlorine

• Oxygen

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

• It increases the activation energy

• It is consumed in the reaction

• It increases the rate of reaction without being used up

• It changes the products formed