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Karteikarten

Chemisty - Rate and Ectent of Chemical Change

Savannah Ferguson Chemistry GCSE Englisch 22 Karten

Karten in diesem Stapel (22)

  1. 1Rate of ReactionHow fast the reactants are changed into products.
  2. 2Speeding up reactions1. increasing pressure and concentration
    2. increasing surface area
    3. increasing temperature
    4. the presence of a catalyst
  3. 3Working out the rate of reaction1. How quickly the reactants were used to make the products
    2. How quickly products of the reactants are made
  4. 4Calculating the rate of reactionFinding the gradient of a graph for a specific point
    Change in Y / Change in X
  5. 5Measuring the rate of reaction1. Mass of the reaction
    2. Gas of the reaction
    3. Transparency (light) of the reaction
  6. 6Mean rate of the reaction1. Quantity of reactants used / time
    2. Quantity of products formed / time
  7. 7Collision theoryWhen particles collide into one another with enough energy a reaction could take place.
  8. 8Activation energyThe minimum amount of energy needed for a reaction
  9. 9Surface area1. Smaller Volumes reactants are much more exposed and react much quicker
    2. Surface area : Volume
    3. Smaller the size the larger surface area.
    4. A larger surface area would be a quicker reaction
  10. 10Temperature1. Higher temperature increases the rate of reaction
    2. Particles collide more often and with more energy
  11. 11Concentration and Pressure1. More concentration increases the rate of reaction due to more particles moving in the same volume of concentration
    2. Higher pressure increases the rate of reaction due to gas particles being squished closer
  12. 12A Catalyst1. A catalyst is not used up and can be repeatedly used.
    2. It increases the minimum energy a reaction can have meaning its more likely for a reaction to take place.
  13. 13Advantages of a Catalyst1. Cheaper
    2. Similar effect as a higher temperature and / or pressure
    3. They help the environment
  14. 14Reversible reactions1. The reactants can be used to make products
    2. The products can be used to make the reactants
  15. 15Reversible Reaction EXAMPLEAmmonium Chloride -><- Ammonia + Hydrogen Chloride
  16. 16Endothermic1. A reaction that TRANSFERS energy to the surroundings
    2. From reactants to products
  17. 17Exothermic1. A reaction that TAKES IN energy from surroundings
    2. From products to reactants.
  18. 18Dynamic equilibrium1. Reactants only at the start of reaction
    2. Rate of reactants is much greater than products
    3. Rate of products increases and rate of reactants slow down
    4. Eventually the rates are equal
  19. 19Closed System1. No reactants or products can escape from the container
  20. 20Equilibrium1. The rate of the forwards reaction equals to the reverse reaction
  21. 21Altering Conditions - Forward Reactions (More molecules of gas)1. Which increases in pressure and decreases the amount of products formed
    2. Which decreases in pressure and increases the amount of products formed
  22. 22Altering Conditions - Forwards Reactions (Less molecules of gas)1. Which increases in pressure and increases the amount of products formed
    2. Which decreases in pressure and decreases the amount of products formed

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Beschreibung
GCSE Chemistry Karteikarten am Chemisty - Rate and Ectent of Chemical Change, erstellt von Savannah Ferguson am 30/10/2017.
Erstellt von
Savannah Ferguson · Okt 2017
Aktualisiert
30 Okt 2017
Aufrufe
30
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