C2- Rates and energy

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1. How does a catalyst increase the rate of reaction?

  • Pushes the particles closer together
  • Increases the energy of the reaction
  • Lowers the activation energy
  • Makes the particles move faster
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Other questions in this quiz

2. Which of the following statements about collisions is correct?

  • Only fast-moving particles collide with each other
  • Reactions can happen if the colliding particles have enough energy
  • All colliding particles have the same amount of energy
  • Collisions only happen if there is heat

3. A successful collision is one in which:

  • Particles bounce off each other
  • Enough energy is transferred for particles to react
  • Enough energy is transferred for particles to bounce off each other
  • The particles hit each other

4. What increases the rate of a reaction?

  • Concentration
  • None of the ones stated
  • Surface area
  • All of the ones stated
  • Temperature
  • Pressure

5. What happens when the surface area of a solid is increased?

  • The rate of reaction increases
  • The reaction expands
  • The rate of reaction decreases
  • No change


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