Across
- 3. Located on the inside
- 7. A shiny, hard material that conducts heat and electricity
- 8. A substance made of two or more elements joined
- 11. A greenish-yellow gas element used in pools
- 12. To change chemically when mixed
- 14. A kind of matter with uniform makeup
- 16. A vertical list or section
- 18. A horizontal line of items
- 19. An electrical property, positive or negative
- 22. A higher or lower position
- 23. Easy to press or bend
Down
- 1. A soft, silvery metal element
- 2. Happening in regular patterns
- 4. A basic building block of matter
- 5. The space or time between things
- 6. The complete amount
- 9. A feature or quality of something
- 10. Poisonous or harmful
- 13. Located on the outside
- 15. Not dangerous
- 17. The center of an atom
- 20. The smallest unit of an element
- 21. A state of matter that spreads to fill space
- 24. A chart with rows and columns