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6. What is the ion formula of hydrogen carbonate?
- HCO3 -
- HC1O2 2+
- HCO3 +
- HCO2 -
7. Metal + water --> ?
- metal oxide + hydrogen
- metal oxide + water
- metal hydroxide + hydrogen
- metal hydroxide + oxygen
8. The formula for the reaction of a metal and water is:
- M(s) + 2H20(l) --> M(OH)2(s) + H2(g)
- M(s) + 2H20(l) --> MO(s) + H2O(g)
9. metal oxide + water --> ?
- metal oxide + hydrogen
- metal hydroxide
- metal + hydrogen + oxygen
- metal hydroxide + oxygen
10. metal oxide + acid -->
- salt + water
- metal hydroxide + oxygen
- metal + water
- salt + hydrogen
11. metal hydroxide + acid -->
- salt + water
- metal hydroxide + oxygen
- salt + hydrogen
- metal + water
12. metal carbonate -->
- metal oxide + carbon dioxide
- carbon dioxide + water
- carbon monoxide + hydrogen
- hydrogen + carbon dioxide
13. Thermal stability increases down group 2
14. The carbonates become more soluble as you go down group 2
15. The hydroxides become more soluble as you go down group 2
16. The reactions of metal with water become more vigorous as you go down group 2
17. S-block metals tend to be soft, weak metals with low melting points
18. S-block metals are very unreactive with water and oxygen
19. Elements become less metallic as you go down group 2
20. Group 2 metals are called the alkaline earth metals