Across
- 1. One or two letters that represent an element.
- 3. Takes up the same amount of space.
- 5. Tiny units of matter too small to see.
- 7. A state of matter with a fixed shape and fixed volume.
- 8. A state of matter with no fixed shape or volume.
- 9. A substance made when atoms of different elements join chemically.
- 10. The smallest part of an element.
- 15. Fast change from liquid to gas throughout the liquid.
- 16. Back‑and‑forth movement of particles in one place.
- 18. Gas turning into liquid
- 19. Keeps the same form without spreading or flowing.
Down
- 2. Changing from solid to liquid.
- 4. A state of matter that flows and keeps the same volume but not shape.
- 6. Slow change from liquid to gas at the surface.
- 11. Changing from liquid to solid.
- 12. Particles packed closely together.
- 13. A pure substance made of only one type of atom.
- 14. How particles are positioned in a substance.
- 17. Spread out to fill all available space.
- 19. Movement that allows a substance to pour or move smoothly.