Exothermic Reactions

• Chemical reactions - typically an irreversible reaction which makes something. Products cannot return to reactants

What is an exothermic reaction?

• An exothermic change/reaction is one in which heat energy is given out to the surroundings
• Energy is transferred from chemical to thermal
• This means the energy in the surroundings is higher
• The temperature of the surroundings will increase

What is activation energy

• Minimum amount of energy required for a reaction to occur