- Created by: emeliamyers07
- Created on: 15-07-21 18:03
reactions and temperature changes
Energy is conserved in chemical reactions, so the total amount of energy in the universe at the end of a reaction is the same as it was before the reaction.
When a chemical reacrions occurs, energy is transferred to or from the surroundings ( drawn in or out). When enegry is transferred to the surroundings this is called EXOTHERMIC reaction. The tempreature of the surroundigs increases. Some examples of exothermic reactions include:
Combustion reactions ( fire/explosive)
Many oxidation reactions
Most neutralisation reactions
Everyday uses of exothermic reactions include self heating cans and hand warmers.