Across
- 5. A process in which substances change to form new substances.
- 6. A gas that makes a squeaky pop sound when tested with a burning splint.
- 8. A visible sign that a chemical reaction has taken place.
- 10. Substances that undergo change in a chemical reaction.
Down
- 1. Substances formed in a chemical reaction.
- 2. A gas that turns limewater milky.
- 3. A small unit of matter, used in a model to explain chemical reactions.
- 4. A sign of a chemical reaction, sometimes observed as bubbles.
- 7. An insoluble solid formed in a chemical reaction between two solutions.
- 9. A gas that relights a glowing splint.