Science

4. a silver-white divalent metal.
5. a soft reactive metal
8. a low melting,ductile metallic element nearly approaching silver in color and luster.
9. an organic chemical with the formula of PO.
10. chemical symbol of Ni.
11. a colorless,odorless,gaseous element that has a symbol O.
12. a light,ductile element that burns with a dazzling white light.
14. used to make tools,implements,machinery etc.
15. a highly toxic element that is a liquid at room temperature.
17. a salt of nitrous acid.
18. a sulfuric acid.
19. a bluish grayish element that has a symbol Z.

1. a diatomic anion with chemical formula OH.
2. soft,silver-white,metallic element that oxidizes rapidly in moist air.
3. a salt of chloric acid.
6. a metallic element that is used in fire works.
7. a compound containing chlorine.
13. a light silvery-gray metal
16. a malleable,ductile,metallic element having a characteristic of a reddish-brown color.