Exothermic Flashcards
1
Q
Meaning of enthalpy change?
A
Heat energy measured at constant pressure
2
Q
How are exothermic reactions identified
A
exothermic reactions are identified by determing a temp increase
3
Q
what reaction is bond forming
A
Forming bonds is exothermic
4
Q
when does an exothermic reaction occur
A
when more energy is released from bond making than absorbed during bond breaking. heat
5
Q
what happens during bond formation
A
forming bonds releases energy
6
Q
what is the enthalpy change in an exothermic reaction
A
negative
7
Q
energy profile of exothermic reaction?
A
Enthalpy change of product is lower than enthalpy of reactant
8
Q
eg of exothermic reactions
A
Combustion Oxidation Respiration Acids reacting with metal
