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Edexcel (9-1) Topic 7

https:// revisechemistry.uk 12 Fragen 4,0 (1 Bewertung)

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Fragen in diesem Quiz (12)

  1. 1Which shows the correct reaction profile for an endothermic reaction?
    1. ABild zu Antwort A
    2. BBild zu Antwort B
  2. 2Bonding breaking is an [blank_start]endothermic[blank_end] process, whilst bond making is an [blank_start]exothermic[blank_end] process. In an exothermic reaction, the energy release from forming bonds is [blank_start]higher[blank_end] than the energy used to break them.
    1. Aendothermic
    2. Bexothermic
    3. Chigher
    4. Dlower
  3. 3Two solutions are added together. The temperature of the reaction goes down. What type of reaction is this?
    1. Aexothermic
    2. Bendothermic
  4. 4The temperature of 50 ml acid, in a 100 ml beaker was 18 Celsius. 2 g of calcium carbonate was added, and when it finished reacting the temperature was now 42 Celsius. The temperature change was [blank_start]24[blank_end] Celsius.
    1. A24
  5. 5Which line represents the fastest overall reaction?Bild zu Frage 5
    1. AA
    2. BB
    3. CC
  6. 6Select the correct statement about how the rate changes during the reaction.
    1. Ait increases from zero
    2. Bit increases, then decreases to zero
    3. Cit decreases to zero
    4. Dit stays the same
  7. 7Select all the factors that can change the rate of reaction. (hint: there's more than one)
    1. Apressure
    2. Bvolume
    3. Cconcentration
    4. Dcatalysts
    5. Etemperature
    6. Fsurface area
    7. Gheight
    8. Hsize of container
  8. 8Using data from the table, what was the mean rate of reaction?

    [blank_start]0.5[blank_end] cm3/s    Bild zu Frage 8
    1. A0.5
  9. 9The activation energy for a reaction was measured with and without a catalyst. Select the value that was the value for the catalysed reaction.
    1. A55 kJ/mol
    2. B72 kJ/mol
  10. 10Increasing the [blank_start]surface area[blank_end] of reactants frees up more particles that are available to [blank_start]collide[blank_end] right away. This doesn't add more particles in to the reaction, it only allows particles that would have once had to wait for other particles to [blank_start]react[blank_end] first to be available. This leads to more [blank_start]frequent[blank_end], successful collisions and so the rate of reaction increases.
    1. Acollide
    2. Breact
    3. Cfrequent
    4. Dsurface area
    5. Econcentration
    6. Ftemperature

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Beschreibung
GCSE Chemistry (Edexcel) Quiz am Edexcel (9-1) Topic 7, erstellt von https:// revisechemistry.uk am 23/03/2018.
Sprache
English
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389
Bewertung
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