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Across 3. the state of being thick, sticky, and semifluid in consistency, due to internal friction. 4. the ability of a substance to burn or ignite, causing fire or combustion 9. any property that is measurable, whose value describes a state of a physical system 11. a chemical process where a solid turns into a gas without going through a liquid stage 13. the degree of compactness of a substance. 14. the property of a solid, liquid or gaseous chemical substance called solute to dissolve in a solid, liquid or gaseous solvent 15. a gentle sheen or soft glow, especially that of a partly reflective surface.

Down 1. a property or characteristic of a substance that is observed during a reaction in which the chemical composition or identity of the substance is changed 2. in which the molecules vibrate about fixed positions and cannot migrate to other positions in the substance. 5. the geological process in which sediments, soil and rocks are added to a landform or land mass. 6. a distinctive smell, especially an unpleasant one. 7. able to undergo change of form without breaking. 8. the quality of something that can be shaped into something else without breaking 9. a change from one state (solid or liquid or gas) to another without a change in chemical composition. 10. the state or power of being reactive or the degree to which a thing is reactive. 12. the feel, appearance, or consistency of a surface or a substance.