rate of reaction

?
increasing the concentration of a solution means?
the rate of reaction increases
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concentration is used for a solid, liquid or a gas?
liquid
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pressure is used for a liquid, solid or a gas?
gas
3 of 17
concentration means?
more particles in a given volume
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a lower concentration means particles are less likely to...?
collide therefore a smaller rate of reaction
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increasing the pressure/concentration means the f......... of c........ is increased, making faster reactions.
frequency of collisions
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increasing the temperature means?
increase in rate of reaction
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to make the particles collide more often with more energy you have to do what to the temperature?
increase it
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what does a catalyst do?
lower the activation energy,less energy needed for a reaction.
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T/F? reaction rate increases when a catalyst is used?
TRUE
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pressure means the particles are further apart so more collisions happen ? T/F?
FALSE particles are pushed together so there is a greater chance of a successful collsion
11 of 17
why does the R of R increase when the particles are smaller?
small particles have a bigger surface area than if there was the same number of big particles,
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what is collision theory?
The R of R depends on how often and how hard the reacting particles collide.
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3 things that increase collisions?
higher temperature, higher concentration/pressure, larger surface area.
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catalysts produce more products faster . T/F?
FALSE they produce the same amount or products just faster.
15 of 17
what is an exothermic reaction?
a reaction is one which transfers energy to the surroundings, usually shown as a rise of temp
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an endothermic reaction?
takes energy from surroundings usually shown by a fall in temp
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Card 2

Front

concentration is used for a solid, liquid or a gas?

Back

liquid

Card 3

Front

pressure is used for a liquid, solid or a gas?

Back

Preview of the front of card 3

Card 4

Front

concentration means?

Back

Preview of the front of card 4

Card 5

Front

a lower concentration means particles are less likely to...?

Back

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