EDEXCEL C2 Chemical Reactions

Card Set Information

Author:
HLHSscience
ID:
219580
Filename:
EDEXCEL C2 Chemical Reactions
Updated:
2013-05-14 12:13:13
Tags:
EDEXCEL C2 Chemical Reactions
Folders:

Description:
Chemical Reactions
Show Answers:

Home > Flashcards > Print Preview

The flashcards below were created by user HLHSscience on FreezingBlue Flashcards. What would you like to do?


  1. What does exothermic mean?
    Heat energy is given out
  2. What does endothermic mean?
    Heat energy is taken in
  3. Why does increasing the concentration increase the rate of a reaction?
    • There are more particles
    • So more collisions
    • and more successful collisions
  4. Why does increasing the temperature increase the rate of reaction?
    • The particles move faster
    • So more collisions
    • and more successful collisions
  5. Which has a bigger surface area, powder or lumped calcium carbonate?
    Powder
  6. Why does increasing the surface area increase the rate of a reaction?
    • There is more surface for the particles to react
    • So more collisions
    • and more successful collisions
  7. What is the definition of a catalyst?
    A chemical that speeds up the reaction but remains chemically unchanged
  8. Is combustion an exothermic or endothermic reaction?
    Exothermic
  9. Is bond breaking exothermic or endothermic?
    Endothermic
  10. Is bond making exothermic or endothermic?
    Exothermic
  11. Is photosynthesis an exothermic or endothermic reaction?
    Endothermic
  12. How can you measure the rate of a reaction?
    • Change in mass
    • Time for a volume of gas to be produced
    • Time to stop fizzing
    • Time for a substance to dissolve
  13. What does a catalytic converter do?
    Converts poisonous carbon monoxide into carbon dioxide
  14. Name the 4 factors that affect the rate of a reaction
    • Temperature
    • Concentration
    • Surface Area
    • Catalyst

What would you like to do?

Home > Flashcards > Print Preview