AQA AS Chemistry revision

Junior / 11th grade

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AQA AS Chemistry Revision Notes 2022 updated

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AQA AS Chemistry Revision Notes 2022 updated
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januari 2023

2022/2023
Enthalpy Changes The total chemical energy inside a substance is called the enthalpy (or heat content) When chemical reactions take place, changes in chemical energy take place and therefore the enthalpy changes An enthalpy change is represented by the symbol ΔH (Δ= change; H = enthalpy) An enthalpy change can be positive or negative Exothermic reactions A reaction is exothermic when the products have less energy than the reactants Heat energy is given off by the reaction to the surroun...
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AQA AS Chemistry revision

Junior / 11th grade

AQA AS Chemistry Revision Notes 2022 updated