Across
- 1. bond Atoms transfer electrons.
- 3. Two or more atoms bonded together.
- 4. bond Atoms share electrons.
- 6. The new substance formed after the reaction.
- 7. A substance made of different elements chemically joined.
- 8. A pure substance made of one kind of atom.
- 10. A starting substance in a chemical reaction.
- 12. Same element, different number of neutrons.
Down
- 2. Neutral particle found in the nucleus.
- 4. Speeds up a reaction but isn’t used up.
- 5. Negatively charged particle orbiting the nucleus.
- 9. Positively charged particle in the nucleus.
- 11. The smallest unit of matter.
- 12. Atom that has gained or lost electrons.
- 13. Measures how acidic or basic something is.