Across
- 3. Something that someone makes or grows so that they can sell it
- 6. The chemical element of atomic number 8 and the life-supporting component of the air.
- 7. A solid, liquid, or gas.
- 9. Are changes affecting the form of a chemical substance, but not its chemical composition.
- 10. A complete change in the appearance or character of something or someone, especially so that that thing or person is improved.
- 11. The measured amount of heat in a place or in the body.
Down
- 1. A series of actions that you take in order to achieve a result.
- 2. happens when one chemical substance is transformed into one or more different substances.
- 4. An occasion when two or more people or things communicate with or react to each other.
- 5. A substance that is part of a chemical reaction.
- 6. Is a process in which a chemical substance changes because of the addition of oxygen.
- 8. A statement containing chemical symbols, used to show the changes that happen during a particular chemical reaction.