Chem: exothermic and endothermic reaction
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11 Terms
define exothermic reactions
reaction that transfers thermal energy to the environment
Define endothermic reactions
this is a reactions that takes in heat from its surrounding
Draw the energy level diagram for exothermic reactions
Draw the energy level diagram for endothermic reactions
Exothermic reactions…..?
bond making
Endothermic reactions……?
Bond breaking
Define enthalpy change
the amount of energy taken in and given out in a reaction.
Wht is the enthalpy change in exothermic reaction?
negative
wht is the enthalpy change in endothermic reaction?
positive
Define activation energy
The minimum amount of energy needed for a reaction to start
Define bond energy
the amount of energy needed to break 1 mole of a bond
Note 
Flashcards (24)