Chem G Flashcards
what is an exothermic reaction?
in these reactions the reacting chemicals transfer energy (heat)
what is a endothermic reaction?
in these reactions, the reaction’s energy is transferred from the surroundings to the reacting chemicals.
what is the law of conversation?
energy cannot be created or destroyed in a chemical reaction. It can only be transferred from one form to another
What is activation energy?
the minium amount of energy required for a reaction to take place
What is bond breaking?
t is an endothermic reaction as energy has to be supplied to break up the bonds.
what is bond making?
bond making is an exothermic reaction. when new bonds are formed, energy is transferred to the surroundings;
how to do you calcuate bond energy?
Equation: bonds broken(reactants) - bonds formed (products)
Describe an exothermic reaction?
The energy released in forming new bonds is greater than the energy absorbed when bonds are broken.
describe an exdothermic reaction?
the energy released in forming new bonds is less than the energy absorbed when bonds are broken
