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AQA GCSE CHEMISTRY- UNIT 5 QUESTIONS WITH CORRECT ANSWERS .

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AQA GCSE CHEMISTRY- UNIT 5 QUESTIONS WITH CORRECT ANSWERS .

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AQA GCSE CHEMISTRY- UNIT 5 QUESTIONS
WITH CORRECT ANSWERS 2026-2027
exothermicBreaction - CORRECT ANSWER -
a chemical reaction that releases energy to its surroundings (usually by heating)

Examples of exothermic reactions - CORRECT ANSWER --Burning fuels ( combustion)

- Neutralisation reactions

- Oxidation reactions

Everyday uses of exothermic reactions - CORRECT ANSWER -- Hand warmers

- self heating cans

WhatD1happensD1whenD1aD1chemicalD1reactionD1occursD1?D1-
D1CORRECTD1ANSWERD1-

D1EnergyD1isD1transferredD1toD1orD1fromD1theD1surroundings

WhatD1happensD1toD1theD1amountD1ofD1energyD1inD1theD1universeD1?D1-D1CORRECTD1ANSWERD1-
ItD1alwaysD1staysD1theD1same

endothermicD1reactionD1-D1CORRECTD1ANSWERD1-
ABreactionD1thatD1takesD1inD1energyD1fromD1theD1surroundings.D1ShownD1byD1fallD1inD1temperature.

ExamplesD1ofD1endothermicD1reactionsD1-D1CORRECTD1ANSWERD1--
D1reactionD1betweenD1citricD1acidD1andD1sodiumD1hydrogencarbonate

- ThermalD1decomposition

EverydayD1usesD1ofD1endothermicD1reactionsD1-D1CORRECTD1ANSWERD1--D1sportD1injuryD1packs

HowD1canD1theD1amountD1ofD1energyD1releasedD1inD1aD1reactionD1beD1reducedD1?D1-
D1CORRECTD1ANSWERD1--D1byD1puttingD1theD1polystyreneD1cupD1inD1cottonD1woolD1forD1insulation

- byD1puttingD1aD1lidD1onD1theD1cupD1toD1reduceD1energyD1lostD1byD1evaporation

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