Rate of Reaction

Why name is given to the minimum amount of energy needed by particles for them to react when they collide?

• Activation energy
• Catalytic energy
• Threshold energy

What is the name given to the model which is used to explain how different factors affect the rate of a reaction?

• Particle theory
• Big Bang theory
• Collision theory

What piece of apparatus is used to measure the volume of gas produced in a reaction?

• Gas syringe
• Beaker
• Top pan balance

Which of the following is a possible unit for rate of reaction?

• cm³/s
• m/s
• N

Which of the following would speed up a reaction?

• Use lumps instead of powder
• Increasing the concentration of an acid
• Decrease the temperature

Which of the following will increase the frequency of successful collisions?

• Increasing the temperature
• Decreasing the pressure
• Decreasing the concentraton

Which of the following statements about catalysts is false?

• They seed up reactions
• They provide an alternative reaction pathway with a lower activation energy
• They become chemically changed at the end of the reaction

Which of the following will increase the proportion of successful collisions?

• Increasing the temperature
• Increasing the pressure
• Increasing the concenraton

Which of the following would give a steeper curve on a graph of volume of gas against time?

• Low temperature
• Low concentration
• Using a catalyst

What is the term used to describe a chemical reaction in which the forward and reverse reaction rates are the same?

• A static euilibrium
• An equal equilibrium
• A dynamic equilibrium