energy reactions

Cards (11)

Exothermic 
Chemical Reaction in which energy is given out in the form of heat into surroundings casuing a rise of temprature
2 examples of exothermic reactions
combustions
neutralizations
endothermic 
reaction takes in energy from surroundings in the form of heat usually a decrease in temp of surroundings
what is shown in an exothermic reaction profile
products are lower energy than reactants
what is shown by the hight diffrence in n an exothermic reaction profile 
the energy given out
what is shown in an endothermic reaction profile
products are highter energy than the reactants
what is shown by the hight diffrence in n an endothermic reaction profile
the energy taken in
what is the activation energy
minimum amount of energy needed for the bonds to break and for the reaction to start
on a reaction profile where is the activtion energy 
between the reactants and the higgest point on the curve
on a reaction profile where is the overall energy change
between the reactant line and the line of products
If the energy input is less than the activation energy what will happen and why
nothing, there wont be enough energy to start the reaction and break the bonds