| A | B |
| Heat | Flow of energy due to a temperature difference |
| Temperature | A measure of how hot or cold something is in relationship to some standard |
| Entropy | A measure of the disorder of a system |
| Endothermic | Heat is absorbed in a chemical reaction |
| Exothermic | Heat is released in a chemical reaction |
| Thermodynamics | The study of energy and its interconversions |
| Energy | The capacity to do work or produce heat |
| Photosynthesis | A series of endothermic reactions driven by the energy from sunlight |
| Increased reaction rate | Increased temperature or pressure |
| Corrosion | Process by whereby a metal deteriorates |
| Combustion | A redox reaction between a non-metalic substance and oxygen |
| Reaction rate | The rate at which the concentration of products increases |