________ if less heat energy is released in forming bonds in the products than is required in breaking bonds in the reactants.
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Chemicals
________ store energy in their bonds.
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overall net movement of energy
The ________ determines if the reaction is endothermic or exothermic.
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Energy
________ is needed to break the bonds in the reactants to form their separate atoms.
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new bonds
The newly separated atoms form ________ to make the products, and release energy to their surroundings.
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endothermic reaction
A(n) ________ is one which takes in energy from the surroundings, this is shown by a fall in temperature.
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Neutralisation reactions
________ are also exothermic.
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Chemicals
________ store a certain amount of energy, and different chemicals store different amounts.
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The overall amount of energy, however, doesn't change (if this is a closed system)
we know this is true, because energy cannot be created or destroyed
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These are diagrams that show the relative energies of the reactants and products in a reaction
to show how energy changes over the course of a reaction
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exothermic
thermodynamic process or reaction that releases energy from the system to its surroundings, usually in the form of heat, but also in a form of light, electricity, or sound
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Flashcard (43)