Chemical energetics

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7 Terms

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Exothermic

Heat lost to surroundings
Bonds formed

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Endothermic

Heat taken in from surroudnigns
Net bonds broken

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Endothermic examples

Thermal decomposition
Photosynthesis
Limestone to lime
State changes ; gas to liq liq to gas

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Negative enthalpy

exothermic

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Positive enthalpy

endothermic

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Activation energy

the minimum energy that colliding particles must have in order to react

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Overall Enthalpy change equation

REACTANTS - PRODUCTS
(Bonds broken - bonds formed )