For a reaction to happen, particles must ... with ... ... to cause a reaction.
collide , enough energy
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Smallest amount of energy the particles must have for a reaction to take place is called ... ... .
Activation energy
2 of 12
Coliisions ... often = ... reaction
more = faster
3 of 12
What effects the rate of reaction?
1) temperature 2) concentration/pressure 3) surface area of reactants
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... pieces of nail have a ... surface area so the more particles that are ... the more ... will take place.
small , exposed , collisions
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When does the reaction finish on a graph?
When the end of the line has become still.
6 of 12
Particles need - ... energy = move ... quickly & more ... = more ... energy
more & more - energy & activation
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As the temperature ... the particles gain ... ... so they will move ... ... . This means they collide more ... . The particles which have ... ... require ... energy.
increases , more energy , more quickly. Often. More energy , activation.
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The concentration of a solution is... ?
The number of particles in a given volume.
9 of 12
Increasing the concentration ... the rate of reaction. This is becuase the higher the concentration the ... particles in a given ... . The particles are ... together so will collide more ... .
increases , more , volume , reacting , often
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Catalysts ... up the rate of chemical reactions. They ... ... get used up.
speed , do not
11 of 12
Catalysts ... the activation energy of a reaction.
lower
12 of 12
Other cards in this set
Card 2
Front
Smallest amount of energy the particles must have for a reaction to take place is called ... ... .
Back
Activation energy
Card 3
Front
Coliisions ... often = ... reaction
Back
Card 4
Front
What effects the rate of reaction?
Back
Card 5
Front
... pieces of nail have a ... surface area so the more particles that are ... the more ... will take place.
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