C3 - Flashcards in GCSE Chemistry

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Rate of reaction

the speed with which a chemical reaction takes place

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Reaction time

the time it takes for a driver to step on the brake after seeing an obstacle

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Gradient

rate of change of two quantities on a graph; change in y/change in x

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Product

molecules produced at the end of a chemcial reaction

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Reactant

chemicals which are reacting together in a chemical reaction

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Concentration

the amount of chemical dissolved in a certain volume of solution

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Limiting Reactant

the reactant not in excess that gets used up by the end of the reaction

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Collision Theory

Different reactions can happen at different rates. Reactions that occur slowly have a low rate of reaction. Reactions that happen quickly have a high rate of reaction. For example, rusting is a slow reaction: it has a low rate of reaction.

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Catalyst

1.a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.

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Relative atomic mass (Ar)

measure of the mass of one atom of the element

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Relative formula mass (Mr)

you just add together the Ar values for all the atoms in its formula.

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Percentage yield

comparing the actual yield with the predicted yield

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Atom economy

measure of the amount of starting materials that become useful products

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Other cards in this set

Card 2

Front

the time it takes for a driver to step on the brake after seeing an obstacle

Back

Reaction time

Card 3

Front

rate of change of two quantities on a graph; change in y/change in x

Back

Card 4

Front

molecules produced at the end of a chemcial reaction

Back

Card 5

Front

chemicals which are reacting together in a chemical reaction

Back

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C3

Other cards in this set

Card 2

Front

Back

Card 3

Front

Back

Card 4

Front

Back

Card 5

Front

Back

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