Energy changes in reaction Flashcards
1
Q
What kind of reaction breaks bonds
A
endothermic
2
Q
what kind of reaction creates bronds
A
exothermic
3
Q
temperature in exothermic reaction
A
temperature increases
4
Q
temperature in endothermic reaction
A
temperature decreases
5
Q
Three types of Exothermic reactions
A
Neutralisation
Displacement
Combustion
6
Q
Low activation energy reactions
A
Precipitation and neutralisation
7
Q
High activation energy reactions
A
Combustion
8
Q
Energy of reactants
A
sum of all energies of all bonds in reactants
9
Q
energy of product
A
sum of bond energies of new bonds made
10
Q
Unit for bond energies
A
kJ/mol
11
Q
Overall Energy change
A
Energy in - energy out
12
Q
energy change in exothermic reactions
A
overall energy change is negative
13
Q
energy change in endothermic reactions
A
overall energy change is positive
