Science H.W (27/06/17)

Dear Learners,

Note: Bring Your I-File tomorrow and submit your journal.

Completing and Balancing Equations:

Metals with oxygen gives metal oxides

Non-metals with oxygen gives non-metal oxides

  1. Na + O 2——>
  2. Mg + O2——>
  3. Al + O2——>
  4. S + O2——>
  5. H + O2——>

Metals with Water gives metal hydroxide and liberates out Hydrogen gas.

Symbol of Hydroxide is (OH) valency (1)

  1. Na + H20 ——>
  2. Mg + H20 ——>
  3. Li + H20 ——>
  4. Ba + H20 ——>
  5. Al + H20 ——>

Metals with Acid gives Salt and liberates out Hydrogen gas.

Symbol of sulphate is (SO4) valency (2)

  1. Na + HCl —>
  2. Mg + HCl —>
  3. Zn + HCl —>
  4. Al + HCl —>
  5. Ba+ HCl —>
  6. Mg + H2SO4 ——>
  7. Zn + H2SO4 ——>
  8. Fe + H2SO4 ——>

 

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