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C7.4 Bond energy calculations
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Total cards: 6•Content version: v4•Public deck•Updated: 8/1/2026
Card preview (6)
#1
Front (Question)
What is the bond energy?
Back (Answer)
➢ The energy needed to break the bond between two atoms
#2
Front (Question)
What is bond energy measure in ?
Back (Answer)
➢ KJ/mol
#3
Front (Question)
What do you need to work out in order to find the overall energy change of a reaction?
Back (Answer)
➢ How much energy is needed to break the chemical bonds in the reactants ➢ How much energy is released when the new bonds are formed in the products
#4
Front (Question)
How do you find the overall energy change of a reaction?
Back (Answer)
➢ Reactants - products
#5
Front (Question)
What would be a positive sign if it is an exothermic reaction?
Back (Answer)
➢ negative overall energy change
#6
Front (Question)
What would be a positive sign if a reaction was endothermic?
Back (Answer)
➢ Positive overall energy change