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Every time the Earth and Venus are closest, the same side of Venus is facing us.
Transition State
The highest-energy state during a chemical reaction where the reactants are transformed into products, representing the point of highest energy on a reaction coordinate.
Endothermic Reaction
A chemical reaction that absorbs heat from its surroundings.
Exothermic Reaction
A chemical reaction that releases heat energy to its surroundings.
Hammond Postulate
A principle stating that the transition state of a chemical reaction resembles the structure of the closest stable species.
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