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14 Cards in this Set
- Front
- Back
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Rate of reaction depends upon |
Amount of energy transfered in each collision The frequency of collisions Increasing the temperature increases the chance of a sucessful collision as particles have more energy |
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What is relative atomic mass |
Mass compared to carbon Shown in periodic table top number in each box |
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What is relative formula mass |
Mr mass of a formula compared to a single carbon atom |
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Conservation of mass |
Mass of products must equal the mass of reactants |
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Percentage yield |
Actual yield / predicted yield x 100 |
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Atom economy |
Mr of desired product / total Mr of all products x 100 |
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Endothermic vs exothermic reactions |
Endothermic energy is absorbed to break bonds Exothermic energy is released to create bonds |
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Function of a calorimeter |
Filled with a known mass of water with measure temperature Wick of a spirit burner is lit After experiment temperature of water is measured again |
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Specific latent heat |
How much energy needed to melt or boil it |
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Specific heat capacity |
Amount of energy needed to change the temperature of a 1kg substance by 1 Water 4181 Oxygen 918 Led 128 |
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Batch vs continously |
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Tests for purity |
Chromotography paper Substances are separated and appear when heated or under UV light |
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Structure of diamond vs graphite |
Diamond one carbon connected to four others Graphite layers can slide apart and have free electrons |
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Bucky balls |
Discovered in 1985 each molecule has 60 carbon atoms Joined together to make nano tubes: Strongest material can conduct electricity can act as catalysts |
