Across
- 2. A chemical reaction where iron reacts with oxygen and water to form iron oxide (rust).
- 6. The change in position of an object.
- 7. The process by which the body breaks down food into simpler substances for use by the body.
- 8. A chemical reaction (combustion) that occurs when a substance reacts with oxygen, releasing heat and light.
- 9. A form of energy that is transferred between objects due to a temperature difference.
Down
- 1. A process that involves chemical changes in food, often involving heat.
- 3. A measure of the average kinetic energy of the particles in a substance.
- 4. The tendency of a substance to undergo chemical reaction, either by itself or with other materials.
- 5. The set of chemical reactions in a living organism that maintain life, including the breakdown of nutrients for energy and the synthesis of necessary compounds.