Rates of reaction

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Across
  1. 2. Chemical reactions are fastest at the ___________ because there are plenty of reactant particles to collide with one another.
  2. 5. Increasing the ___________________ by making the reactants powders rather than a large lump, increases the rate of reaction.
  3. 6. Chemical reactions ___________ when one of the reactants has been used up.
  4. 7. Increasing the temperature of a reaction gives the particles more ___________ so they collide with more force and more frequently.
  5. 8. The chemicals that are made during the reaction.
  6. 9. Particles must do this in order for them to react.
Down
  1. 1. When a collision between particles leads to a reaction we call it a ____________ collision.
  2. 3. The chemicals that take part in the reaction.
  3. 4. Increasing the ______________ makes the particles move faster and collide more frequently so increases the rate of reaction.