AQA Chemistry Trilogy Paper 2 Basics

Increasing concentration .......................... rate.

• increases
• decreases
• doesn't affect

Increasing temperature .............................. rate.

• increases
• decreases
• doesn't affect

Increasing pressure ............................. rate.

• increases
• decreases
• doesn't affect

Increasing surface area ........................ rate.

• increases
• decreases
• doesn't affect

Adding a catalyst ..........................the rate of a specific reaction.

• increases
• decreases
• doesn't affect

Choose the one that WOULD NOT increase the rate of reaction between acid and marble chips.

• Increasing temperature
• increasing surface area of marble chips
• increasing concentration of acid
• adding an iron catalyst

Crushing marble chips to a powder would................ the surface area.

• increase
• decrease
• not affect

Explain how increasing concentration increases the rate of the reaction?

• More particles in the same volume. More frequent effective collisions.
• Less particles in the same volume. Less frequent collisions.

Which of these would increase the rate of a reaction?

• Use a bigger beaker
• Increase the temperature
• Have someone else timing

Explain how increasing pressure affects rate

• More exposed reacting particles. More frequent effective collisions.
• Particles have more kinetic energy. Particles move faster. More frequent effective collisions.
• Same number of gas particles in smaller volume. More frequent effective collisions.
• Lowers the activation energy, by providing an alternative route.