Speed of Reactions

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Across
  1. 6. ___ particle size results in smaller surface area exposed for reaction
  2. 7. When ___ increases, there are more reacting particles per unit volume
  3. 8. The ___ of a catalyst remains the same at the start and end of a chemical reaction
  4. 10. The ___ taken for a chemical reaction to complete is shortened when a catalyst is used
  5. 12. The speed of a reaction ___ with time
  6. 15. increasing concentration or temperature of reactants increase the ___ of collisions and hence the ___ of effective collisions leading to greater speed of reaction
  7. 16. The use of a catalyst results in a ___ proportion of particles having sufficient energy to overcome the activation energy required for reaction to proceed
  8. 18. For reactions involving production of a gas, the rate of the reaction can be monitored by measuring the ___ of gas produced in a fixed duration of time
  9. 20. When the ___ of gaseous reactants is increased, reactant particles are brought closer together
  10. 21. The speed of a reaction can be determined by measuring the amount of ___ formed in a fixed duration of time
  11. 24. In order for a chemical reaction to take place, particles must collide with sufficient energy to overcome the ___ energy for reactants to convert to products
  12. 25. a substance that speeds up a chemical reaction but remains chemically unchanged at the end of the reaction
  13. 27. In a graph of reactant or product against time, the speed of reaction is shown by the ___
Down
  1. 1. The speed of a reaction can be monitored by measuring the time taken for a reaction to ___
  2. 2. ___ temperature results in a smaller proportion of particles with sufficient energy to overcome activation energy
  3. 3. A gradient of zero or a horizontal line indicates that a reaction has ___
  4. 4. For reactions involving production of a gas, the rate of the reaction can be monitored by measuring the loss in ___ of the reactants in the flask for a fixed duration of time
  5. 5. A catalyst does not affect the ____ energy of reactant particles
  6. 9. ___ collisions take place when particles collide with one another with the correct orientation and sufficient energy to overcome activation energy for reactants to convert to products
  7. 11. The speed of reaction is ___ at the start as the concentration of reactants is highest
  8. 13. A ___ gradient indicates a faster reaction
  9. 14. a decrease in ___ results in reactant particles losing kinetic energy and moving slower
  10. 17. The ___ of a chemical reaction remains unchanged when a catalyst is used
  11. 19. The rate of a reaction can be investigated by measuring amount of ___ remaining in a fixed duration of time
  12. 22. A catalyst is ___ in its action
  13. 23. a catalysed reaction proceeds by an alternative pathway which has a ___ activation energy than an uncatalysed reaction
  14. 26. Some ___ metals and their compounds act as catalysts