Endothermic: Absobing Energy (Positive)
Ecdothermic: Releasing Energy (Negative)
1: Reactants: a substance before reaction
2: Activatied Complex: The highest point that displays the largest potential energy of the reaction
3: Products: A result that after the reaction.
(a)= Activation Energy, which is the difference between Reactants and Activatied Complex
So basically, if the Products side have higher energy than the Reactants, which means it's "ABSORBING" energy >>> Endothermic (POSITIVE)
If the Products side have lower energy than the Reactants, which means it's "RELEASING" energy>> Exothermic (NEGATIVE)
Moreover, we can also calculate it without looking at the graph:
PRODUCTS - REACTIANTS = POSITIVE / NEGATIVE
if it's positive, then it'll be Endothermic, if not, Exothermic then : )
An other punishment to our 1/2...
Energy Equation:
CH4 + 2O2 > CO2 + 2H2O + 812kJ (Remember, kJ"RELEASING energy will be the product side.)
(Exothermic)
P4O10 + energy > P4 + 5O2 ( ABSORBING energy, Endothermic)
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