Across
- 1. - Substance that accepts protons
- 3. - Substance that donates protons
- 4. - Electrons in the outer shell of an atom
- 8. - Atoms of the same element with different numbers of neutrons
- 10. - Substance that speeds up a chemical reaction
- 14. - Positively charged particle
- 15. - Pure substance consisting of one type of atom
- 16. - Process of chemical change
- 18. - Measure of acidity or basicity
Down
- 1. - Connection between atoms
- 2. - Substance that dissolves a solute
- 5. - Negatively charged particle
- 6. - Product of an acid-base reaction
- 7. - Basic unit of a chemical element
- 9. - Substance dissolved in a solvent
- 11. - Two or more atoms bonded together
- 12. - Atom or molecule with a net electric charge
- 13. - Neutral particle in the nucleus
- 14. - Table of elements
- 17. - Substance composed of two or more elements