Matter

2. the property of something that is great in magnitude
5. the quality of being opaque to a degree; the degree to which something reduces the passage of light
9. the transmission of heat or electricity or sound
12. the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
14. (chemistry) any process determined by the atomic and molecular composition and structure of the substances involved
15. attraction for iron; associated with electric currents as well as magnets; characterized by fields of force
17. the temperature at which a solid turns into a liquid
18. the temperature in which a liquid turns into a solid when cooled

1. the quality or state of being firm or strong in structure.
3. the quality of being easily ignited and burning rapidly
4. the process of gas to plasma
6. the degree of compactness of an substance
7. a visual attribute of things that results from the light they emit or transmit or reflect
8. a change from one state (solid or liquid or gas) to another without a change in chemical composition
9. the process of changing from a gaseous to a liquid or solid state
10. the degree of hotness or coldness of a body or environment (corresponding to its molecular activity)
11. the degree to which something is poisonous
13. the visual property of something that shines with reflected light
16. the vertical force exerted by a mass as a result of gravity