Energy Changes Flashcards
Slowest exothermic reaction requires what
Highest activation energy
In exothermic reactions is bond breaking less or greater than bond making energy
Bond formation is greater than bond breaking energy
How does energy content affect stability
Higher the energy content less stable the reaction
What type of process is bond breaking
Thermal process
What is the energy barrier
Activation energy
Energy change whenn bonds are broken
Endothermic
Energy changes when bond is formed
Exothermic
What happens to the temperature during forward reaction
In a forward reaction, the energy content in the products is less than the energy content in the reactants so energy is given out
What is a fuel cell
A device that combines fuel with oxygen to produce water and electricity directly
Why is calorimeter made of plastic
Plastic minimises heat loss as it is a good insulator of heat
what is meant by activation energy
Minimum energy particles must possess for a chemical reaction to take place
