Activation Energy

Definition

Activation energy is the minimum amount of energy required to start a chemical reaction.

Analogy

Think of activation energy like the initial push you need to give a stalled car to get it moving. Without that push (or in this case, energy), the car (or reaction) won't start.

Related terms

Potential Energy: This is stored energy or energy due to position. It's like a boulder perched on top of a hill - it has potential to do work if it rolls down.

Catalyst: A substance that speeds up a chemical reaction by lowering the activation energy needed. It's like an extra friend helping you push that stalled car - with their help, less effort is needed from you.

Exothermic Reaction: A chemical reaction that releases heat (energy). Imagine lighting a firework - once ignited, it releases light and sound (energy).