Across
- 2. Thin layer applied to a surface for protection or decoration
- 5. Group of non-metal elements that occupy Group 17 of the periodic table.
- 7. Mixture of metals with other elements
- 9. Reddish-brown coating on iron caused by oxidation
- 10. Sedimentary rock composed mostly of calcium carbonate
Down
- 1. Ability to be stretched into a wire
- 3. Copper and zinc alloy
- 4. Gradual destruction of a material by chemical reactions
- 6. Compounds formed from the reaction of metals with oxygen and water
- 8. Mineral from which metal can be extracted