Across
- 1. - Substance with a pH below 7
- 3. - Biological catalyst
- 6. - Positively charged particle in an atom’s nucleus
- 9. - Particle with no charge in an atom’s nucleus
- 10. - Speeds up a chemical reaction without being consumed
- 12. - Substance with a pH above 7
- 14. - Atom or molecule with an electric charge
- 15. - State of balance in a reversible reaction
- 16. - Atoms of the same element with different numbers of neutrons
- 18. - Substance made of two or more elements
Down
- 1. - Smallest unit of an element
- 2. - Substance made of one type of atom
- 4. - Negatively charged particle in an atom
- 5. - Liquid in which a solute dissolves
- 6. - Scale to measure acidity or basicity
- 7. - Process that changes substances into new substances
- 8. - Group of atoms bonded together
- 11. - Homogeneous mixture of two or more substances
- 13. - Mixture of two or more metals
- 17. - Force that holds atoms together