c5 chemical energetics

endothermic

reaction that takes in energy from the environment(usually in the form of heat), resulting in the loss of energy(fall in temp) of the surrounding

exothermic

a reaction that releases energy into the environment, usually in the form of heat, causing the rise in energy around the reaction(increase in temp)

what is enthalpy(ΔH)

the overall amount of energy being taken in during a reaction. exothermic is negative energy because there is now less energy in the reaction. endothermic is positive enthalpy

if staring energy is more than the resultant energy then what type of reaction is it

exothermic

how do you mark enthalpy change vs activation energy in exothermic and endothermic graphs

what is activation energy

minimum amount of energy colliding particles must have for bonds to break and the particles to react

enthalpy change in terms of bonds

enthalpy change is the energy required to break the bonds minus energy released by forming the bonds

how do you calculate energy based on energy required to break the bonds

you can calculate energy with values that give the amount of energy needed to break a mol of those bonds, then you calculate the enthalpy change, with negative meaning exothermic