chemistry-rate of chemical change 2

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explain the rate of a reaction
the reacting particles collide with one another. Not all collisions result in a chemical reaction:the collision needs enough energy for bonds in the reactant molecules to break.When a particle collides with another particle with enough energy,then a
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in terms of explaining the rate of reaction,what is a collision frequency?
the number of successful collisions per second.the higher the collision frequent-higher the rate of reaction.
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name the 3 factors affecting the rate of chemical change
the temperature,concentration and surface area of the reactants.
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how does the temperature of the reactants affect the rate of chemical change
higher temp=higher rate of r bc increasing temp increases the mean velocity of the particles.faster par-collision frequency incr-higher collision freq-higher rate of reaction
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how does the concentration of the reactants affect the rate of chemical change
higher con-higher r of r. increasing con-increases number of reacting particles in same volume. more particles per volume-more collisions-collision freq incre-higher cf-higher rate of reaction
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how does the surface area of the reactants affect the rate of chemical change
higher sa-higher r of r. increase surface area-allows more reactants to collide with each other with enough energy.more collisions-higher cf-higher rate of r.
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explain the rate of chemical change while using a catalyst
increase r of r but remain chemically unchanged at end of reaction.Many only work for one particular reaction. some industrial r only pos on large scales by using a c.
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how does a catalyst work with the rate of reaction?
bc it provides a surface on which the reacting molecules can collide with each other,reducing the amount of energy needed for a collision 2 be successful. more particles have the amount of energy needed;increasing cf and r of r.
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describe the importance of catalysts
used in production of bulk chemicals,fine chemicals, petrochemicals,in food precessing,reduce amount of energy required to produce chemical products-preserves world fuel reserves+reduces environment impact of burning fossil f,ef global warming
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Card 2

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in terms of explaining the rate of reaction,what is a collision frequency?

Back

the number of successful collisions per second.the higher the collision frequent-higher the rate of reaction.

Card 3

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name the 3 factors affecting the rate of chemical change

Back

Preview of the front of card 3

Card 4

Front

how does the temperature of the reactants affect the rate of chemical change

Back

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Card 5

Front

how does the concentration of the reactants affect the rate of chemical change

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