8. Solid magnesium, Mg, reacts with oxygen gas, O2, to form the solid magnesium oxide, MgO. Which is a balanced chemical equation for this reaction? A. Mg + O  MgO B. Mg + O2  MgO2 C. Mg + 2O  2MgO D. 2Mg + O2  2MgO

What is the balanced equation for the combustion of magnesium?AMg (s) + O2 (g) → MgO (g)BMg (s) + 2 O2 (g) → MgO4  (aq)CMg (s) + O2 (g) → MgO2 (g)D2 Mg (s) + O2 (g) → 2 MgO (s)

Create the balanced chemical equation for the following reaction.solid magnesium reacts with aqueous cadmium permanganate*You must use subscripts where appropriate for full marks!!!

The balanced chemical equation when Aluminium reacts with oxygen to form aluminium oxide is A Al+O2→ Al2O3 c 3A1 3A1+4022A1₂O, B 4Al +3022Al2O3 D 2Al +3022ALO3

8. Write word and balanced chemical equations for the reactions between:a sodium and waterb magnesium and steamc calcium and oxygend bromine and potassium iodide solutione zinc and copper sulfate solution.

(a) A piece of magnesium ribbon is ignited and placed in a gas jar of oxygen.The equation for the reaction is 2Mg + O2 → 2MgO (i) Give two observations that would be made in this reaction. (2) 1 ................................................................................................................................................................................................................................................................................ .................................................................................................................................................................................................................................................................................... 2 ................................................................................................................................................................................................................................................................................ ....................................................................................................................................................................................................................................................................................(ii) State why this is an oxidation reaction. (1) .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................(b) A second piece of magnesium ribbon is ignited and placed in a gas jar of carbon dioxide.A very exothermic reaction occurs, forming magnesium oxide and carbon.(i) State what is meant by the term exothermic. (1) .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................(ii) Give the chemical equation for this reaction. (1) ....................................................................................................................................................................................................................................................................................(iii) A fire starts in a warehouse where magnesium is stored.Suggest why it would not be suitable to use a carbon dioxide fire extinguisher to put out this fire.