exothermic and endothermic reactions Flashcards
what happens during an exothermic reaction?
energy is transferred from the reacting molecules to the surroundings
what happens to the temp of the surroundings in an exothermic reaction?
the temp increases
what type of reaction is combustion (burning)?
an exothermic reaction
what diagrams are drawn?
energy profile diagrams
what is one result of an exothermic reaction?
the products have less energy than the reactants, because energy has been transferred from the reaction to the surroundings
give 2 exothermic reactions
- hand warmers
- self heating cans like food or drink
what happens during an endothermic reaction?
energy is taken in from their surroundings, so the temp of the surroundings decrease
what is one result of an endothermic reaction?
the products have more energy than the reactants, because energy has been taken in from the surroundings
what is the peak called in an energy profile diagram?
the activation energy (minimum amount of energy needed to start a reaction)
