Across
- 3. a substance or matter in a state in which it will expand freely to fill the whole of a container
- 6. made up or consisting of several parts or elements
- 8. colorless, life-supporting component of the air
- 9. the quantity of matter which a body contain
- 12. good conductor of heat and electricity
- 13. the spreading of something more widely
Down
- 1. becoming liquefied by heat
- 2. explode when mix with water
- 4. hard solid non-metallic mineral matter, as a building material
- 5. the amount of space something takes up
- 7. a solid material which is typically hard, shiny, malleable
- 10. firm and stable in shape
- 11. a substance that flows freely but is of constant volume