Across
- 8. – Solid changes directly into gas.
- 9. – Water turns into gas during this process.
- 11. – A pure substance made of only one type of atom.
- 12. – Liquid turns into solid.
- 15. – Water falls from clouds as rain, snow, or hail.
Down
- 1. – Has fixed volume but takes the shape of its container.
- 2. – Gas turns back into liquid.
- 3. – Has no fixed shape or volume; particles move freely.
- 4. cycle – The continuous movement of water on Earth.
- 5. – Solid turns into liquid.
- 6. – A compound made from hydrogen and oxygen.
- 7. – Has fixed shape and volume.
- 10. – The smallest particle of matter.
- 13. – Two or more substances mixed but not chemically joined.
- 14. – Formed when two or more elements join chemically.