Chemistry- C5 Part A

Created by: 13clarken
Created on: 26-03-18 15:09

The overall amount of ... doesn't change, it's just moved around

energy

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This reaction transfers energy to the surroundings by heating and is shown with a temperature rise. Best example = COMBUSTION (burning fuels). Examples also include Neutralisation Reactions and Oxidation Reactions, reaction releases energy

Exothermic

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This reaction takes in energy from surroundings, shown with a fall in temperature. Less common than exothermic. Example: Thermal Decomposition

Endothermic

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In an exothermic reaction: Products are at a ... energy than reactants (Energy given out)

lower

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In an endothermic reaction: Products are at a ... energy than reactants (Energy taken in)

higher

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Energy must always be supplied to ...

break bonds

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In a reaction, old bonds are broken and new bonds are ...

formed

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Energy supplied to break bonds =

Endothermic

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Energy released to form new bonds =

Exothermic

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In exothermic: Energy released by forming bonds is ... than energy used to break them

greater

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In endothermic: Energy used to break bonds is ... than energy released by forming them

greater

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... reactions in a cell produce electricity

Chemical

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... is produced when a charge is able to flow by a wire between two electrodes

electricity

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Other cards in this set

Card 2

Front

Back

Exothermic

Card 3

Front

This reaction takes in energy from surroundings, shown with a fall in temperature. Less common than exothermic. Example: Thermal Decomposition

Back

Card 4

Front

In an exothermic reaction: Products are at a ... energy than reactants (Energy given out)

Back

Card 5

Front

In an endothermic reaction: Products are at a ... energy than reactants (Energy taken in)

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Chemistry- C5 Part A