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Across 2. This is a physical property of matter. 4. This is a physical property of matter. 6. Water does this to become a solid. 10. The temperature at which a substance boils. (2 Words) 11. Everything is made of this. 12. The change from a gas to a liquid. 14. This state of matter has a fixed shape. 16. The liquid form of H20. 17. This is a type of gas used in many bright and colourful signs. 20. This state of matter takes the shape of its container. 22. The molecules of this state of matter are packed tightly together. 23. You can see this state of matter. 24. Mercury is the only metal found in this state. 25. Liquids can change their shape by doing this.

Down 1. The temperature at which a substance freezes. (2 Words) 3. The change from a liquid to a gas. 5. Occurs when a solid changes phase and becomes a gas without becoming a liquid first. 7. To change the state of any matter you add or take away this. 8. The amount of space something takes up. 9. A phase of matter that occurs when electricity passes through a gas and produce light. 13. This occurs when a gas changes phase and becomes a solid without becoming a liquid first. 15. The solid form of water. 18. This state of matter is formed when heat is added to solids. 19. The gas form of water. 21. This is a physical property of matter.