C1 Atomic structure: Balancing equations
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1. Balance the equation for the reaction
between sodium and oxygen. (1)
____Na + O2 → ____Na2O
4 Na + O2 → 2 Na2O
2. Balance the equation for the reaction
between lithium and oxygen. (1)
____Li + O2 → ____Li2O
4 Li + O2 → 2 Li2O
3. Balance the equation for the reaction
between potassium and oxygen. (1)
____K + O2 → ____K2O
4 K + O2 → 2 K2O
4. Balance the equation for the reaction
between magnesium and oxygen. (1)
____Mg + O2 → ____MgO
2 Mg + O2 → 2 MgO
5. Balance the equation for the reaction
between calcium and oxygen. (1)
____Ca + O2 → ____CaO
2 Ca + O2 → 2 CaO
6. Balance the equation for the reaction
between aluminium and oxygen. (2)
____Al + __O2 → ____Al2O3
4 Al + 3 O2 → 2 Al2O3
7. Sodium reacts with chlorine to produce sodium chloride.
Balance the equation for the reaction. (1)
__ Na + Cl2 ⟶ __NaCl
2 Na + Cl2 ⟶ 2 NaCl
8. Potassium reacts with chlorine to produce potassium chloride.
Balance the equation for the reaction. (1)
__ K + Cl2 ⟶ __ KCl
2 K + Cl2 ⟶ 2 KCl
9. Fluorine reacts with chlorine to produce ClF3.
Balance the chemical equation for the reaction. (1)
Cl2 + ______F2 → 2 ClF3
Cl2 + 3 F2 → 2 ClF3
10. Sodium reacts with water to produce
sodium hydroxide and hydrogen.
Balance the equation for the reaction. (1)
_____ Na + 2 H2O → 2 NaOH + H2
2 Na + 2 H2O → 2 NaOH + H2
11. Lithium reacts with water to produce
lithium hydroxide and hydrogen.
Balance the equation for the reaction. (2)
_____ Li + ___ H2O → __ LiOH + H2
2 Li + 2 H2O → 2 LiOH + H2
12. Potassium reacts with water to produce
potassium hydroxide and hydrogen.
Balance the equation for the reaction. (2)
_____ K + ___ H2O → __ KOH + H2
2 K + 2 H2O → 2 KOH + H2
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