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