Across
- 1. the ability of a substance to dissolve in a liquid and form a mixture.
- 4. a rapid chemical reaction between substances, typically with oxygen, producing heat and light
- 6. how easily a material can bend, stretch, or change shape without breaking.
- 8. how easily a substance can catch fire and burn
- 10. a thin, dull layer of corrosion that forms on the outer surface of a metal when it reacts chemically with gases in the air.
- 11. the odourless, colourless, and tasteless mixture of gases that makes up the Earth's atmosphere
- 12. a chemical compound made of two hydrogen atoms bonded to one oxygen atom, with the formula H2O
- 14. any substance that in water solution tastes sour,
- 15. the biological systems that humans and other animals use to gather information about the world around them and inside their bodies
Down
- 2. how light bounces off the surface of a mineral, rock, or crystal
- 3. the specific temperature at which a liquid changes into a gas or vapour
- 5. anything that has mass and takes up space.
- 7. a single, pure form of matter that has a fixed, uniform composition and specific properties throughout.
- 9. the exact temperature where a solid turns into a liquid as it absorbs heat
- 13. a process where one or more starting substances change into completely new substances with different properties