Exothermic & Endothermic
- Created by: Kirsten Reading
- Created on: 27-04-13 11:21
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- Exothermic & Endothermic
- Endothermic
- Examples..
- Electrolysis
- Thermal decomposition of calcium carbonate in a blast furnace
- Sports injury cold packs
- Take in energy from the surroundings
- Energy transferred as heat energy
- Mixture and surroundings get colder
- Products have more energy then original reactants had
- Extra energy needed to make new bond is absorbed from surroundings
- Temperature decreases
- Examples..
- Exothermic
- Transfer energy to the surroundings
- Transferred as heat energy
- Mixture and surroundings get hotter
- Examples..
- Combustion (burning)
- Oxidation (rusting)
- Neutralisation (acids and alkalis)
- Hand warmers & self-heating cans
- Excess energy released to surroundings so temp rises
- Energy changes
- Reversible reactions
- Exothermic one way, endothermic the other
- Products react to make original reactants
- Reversible reactions
- Endothermic
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