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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

  • True
  • False

14. The carbonates become more soluble as you go down group 2

  • False
  • True

15. The hydroxides become more soluble as you go down group 2

  • True
  • False

16. The reactions of metal with water become more vigorous as you go down group 2

  • True
  • False

17. S-block metals tend to be soft, weak metals with low melting points

  • True
  • False

18. S-block metals are very unreactive with water and oxygen

  • False
  • True

19. Elements become less metallic as you go down group 2

  • False
  • True

20. Group 2 metals are called the alkaline earth metals

  • True
  • False