Bobnando

5. A pure substance made up of only one type of atom
7. A large molec ule made up of small repeating subunits chemically bonded together
8. A plastic made from starch deirved from plants such as corn and potato
12. Does not break down
18. The ability of a substanes to bend or hammered into different shapes
20. A compound produced when iron reacts with oxygen and water in the atmoshere

1. The breakdown of a metallic substance due to a chemical reaction with substances in the enviroment
2. The ability of a substance to catch fire
3. How shiny a material is
4. A substance used up in a chemical reaction
6. A pure substence made up of two or more different atoms
9. A new substance prooduced in a chemical reaction
10. A row across the periodic table
11. A column down the periodic table
13. Capable of decomposing by the action of micro-organisms
14. A molecule constsing of two atoms
15. Both a philosophy and ancient science
16. The ability of a substanes drawn to wire
17. A gree patina caused by the reaction of copper with air or sea water over a long period of time
19. How posionous a substance is