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Terms and Definitions

Endothermic Reaction where heat/energy is taken in +
Exothermic Reaction where heat/energy is given out -
Heat of Reaction This is the heat change that occurs when a chemical reaction takes place according to given chemical formula
Heat of Combustion This is the heat change that occurs when one mole of a substance is burnt in excess oxygen
Heat of Formation This is the heat change that occurs when one mole of a substance is formed from its elements in its standard states
Heat of Solution This is the heat change that occurs when one mole of a substance is dissolved in excess solvent
Kilogram Calorific Value This is the heat change that occurs when one kilogram of a fuel is completely burnt
Hess' Law This states that the heat change for a chemical reaction depends on the initial and final temperatures only and is independent of the path followed
Heat of Neutralisation This is the heat change that occurs when one mole of H+ ins from an acid is completely reacted with one mole of OH- ions from a base.
3 precautions to ensure accurate reading during the HoN experiment? 1: Accurate thermometer 2: Insulated beaker 3: Thorough mixing/stirring 4: Same temperature at start
Bond energy Bond energy is the energy required to completely break up 1 mole of covalent bonds and completely separate the neutral atoms formed.
Specific Heat Capacity This is the amount of energy required to raise the temperature of Ikg of water by 1C
Created by: cbschemistry
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