What are some common exothermic reactions?
Combustion, Oxidation, Neutralisation
What are reaction profiles?
Diagrams that show the relative energies of the reactants and products in a reaction, and how the energy changes over the course of the reaction
What are bond energies?
The energy needed to break 1 mol of a particular covalent bond
What type of process is breaking bonds?
endothermic as it requires energy from its surroundings to break these bonds
In Chemicals where is energy stored?
In their bonds
What is the relationship between different chemicals and energy?
Different Chemicals hold different amounts of energy in their bonds
How is energy most commonly released into its surroundings?
Heat
What is an exothermic reaction?
A reaction where energy is transferred to its surroundings.
What is an endothermic reaction?
a reaction where energy is absorbed from its surroundings
What is activation energy?
minimum amount of energy needed for the reactant particles to collide with each other and react
What type of energy is commonly taken in from its surroundings?
Heat Energy
What type of process is forming bonds?
exothermic as energy is released when bonds are formed
every chemical bond has a particular bond energy associated with it
what can these bond energies be used for?
to calculate the overall energy change in a reaction and determine if a reaction is endothermic or exothermic?
How do you find out bond energies?
They will be given to you
What are bond energies measured in?
kJ/mol