Match each term to its definition by dragging the tiles to the correct boxes.

Tiles:
- chemical energy
- transition state
- chemical reaction
- activation energy
- temperature

Pairs:
1. a measure of the average kinetic energy of particles
2. energy that a substance has because of the arrangement of its atoms
3. the process of breaking down an existing set of substances to form a new set of substances
4. a phase in a reaction in which existing bonds break to form new bonds
5. energy required to start a reaction