Across
- 1. The basic unit of a chemical element
- 2. A group of elements with low chemical reactivity
- 4. A subatomic particle with a negative charge
- 7. A type of chemical bond where atoms share electrons
- 8. An atom with the same number of protons but a different number of neutrons
- 12. A compound formed by the reaction of an acid with a base
- 13. A solid material that is typically shiny and malleable
- 16. A group of atoms bonded together
- 18. A substance made up of two or more elements
- 19. A chemical element with the symbol H
Down
- 1. A group of soft, highly reactive metals
- 3. A subatomic particle with no charge
- 5. A subatomic particle with a positive charge
- 6. A state of matter that has no fixed shape or volume
- 9. A chemical element with the symbol O
- 10. A pure substance that cannot be broken down into simpler substances
- 11. A substance that can accept hydrogen ions
- 14. A substance that can donate hydrogen ions
- 15. A chemical element with the symbol C
- 17. A state of matter that has a fixed volume but no fixed shape