An exothermic reaction is a chemical reaction that releases energy by light or heat. It is the opposite of an endothermic reaction.
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what is an endothermic reaction?
The definition of endothermic is a chemical reaction that is accompanied by the absorption of heat, or an organism that generates heat to maintain its temperature.
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describe what an energy level diagram looks like for an exothermic reaction
• During exothermic reactions energy is given out. This means that the energy of the products will be lower than the energy of the reactants.
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describe what an energy level diagram looks like for an endothermis reaction
• During endothermic reactions energy is taken in. This means the energy of the products will be higher than the energy of the reactants.
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Give examples of exothermic reactions
• Burning • Neutralisation reactions between acids and alkalis • The reaction between water and calcium oxide
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Give examples of endothermic reactions
• Electrolysis • The reaction between ethanoic acid and sodium carbonate • The thermal decomposition of calcium carbonate in a blast furnace
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What is the activation energy?
The least amount of energy needed for a chemical reaction to occur
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Other cards in this set
Card 2
Front
what is an endothermic reaction?
Back
The definition of endothermic is a chemical reaction that is accompanied by the absorption of heat, or an organism that generates heat to maintain its temperature.
Card 3
Front
describe what an energy level diagram looks like for an exothermic reaction
Back
Card 4
Front
describe what an energy level diagram looks like for an endothermis reaction
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