Across
- 3. a metal that is made by mixing two or more metals, or a metal and another substance (n.)
- 5. a liquid in which a solid substance has been dissolved (n.)
- 6. the degree to which a substance is poisonous (n.)
- 7. the ability of a chemical to burn, causing fire or combustion (n.)
- 9. anything you can smell – like a scent or an aroma (n.)
- 10. the quality of being flexible, like a piece of metal that can be bent into a thin wire (n.)
- 12. to lose or cause to lose the shine (v.)
- 13. the positively charged central core of an atom, consisting of protons and neutrons and containing nearly all its mass (n.)
- 15. the rate that electricity, heat, or sound travels through something (n.)
- 17. the simplest unit of a chemical substance, usually a group of two or more atoms (n.)
- 19. the amount of space that a substance or object occupies, or that is enclosed within a container (n.)
- 20. the quality of being difficult to bend, cut, or break (n.)
Down
- 1. the state or quality of shining by reflecting light (n.)
- 2. the ability of a substance to dissolve (n.)
- 4. the chemical combination of a substance with oxygen (n.)
- 8. capable of being decomposed by bacteria or other living organisms (adj.)
- 10. a measure of how much matter is in a certain volume (n.)
- 11. a reddish-brown substance that forms on the surface of iron and steel as a result of reacting with air and water (n.)
- 14. a natural appearance of coloured light in the sky, that is usually seen in the northern or southern magnetic pole (n.)
- 16. an atom or small group of atoms that has an electrical charge (n.)
- 18. a substance composed of two or more elements whose composition is constant (n.)