Terms and Definitions
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Endothermic | Reaction where heat/energy is taken in +
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| Exothermic | Reaction where heat/energy is given out -
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| Heat of Reaction | This is the heat change that occurs when a chemical reaction takes place according to given chemical formula
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| Heat of Combustion | This is the heat change that occurs when one mole of a substance is burnt in excess oxygen
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| 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
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| Heat of Solution | This is the heat change that occurs when one mole of a substance is dissolved in excess solvent
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| Kilogram Calorific Value | This is the heat change that occurs when one kilogram of a fuel is completely burnt
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| 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
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| 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.
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| 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
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| Bond energy | Bond energy is the energy required to completely break up 1 mole of covalent bonds and completely separate the neutral atoms formed.
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| Specific Heat Capacity | This is the amount of energy required to raise the temperature of Ikg of water by 1C
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