Question

Complete the following word equation: (a) Copper sulphate + Iron  __________+ Copper (b)Magnesium + Oxygen  _____________ (c) Iron + Oxygen + water  __________​

Answer 1

Answer:

Copper Sulphate + Iron = Iron Sulphate + Copper

Magnesium + Oxygen = Magnesium Oxide

Iron + Oxygen + Water = Ferric Oxide

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Answer 2

Answer:

a) When an iron nail is dipped in copper sulphate solution, a brown coating of copper is formed on the surface of iron and the colour of copper sulphate solution changes from blue to light green.

b) Oxygen and magnesium combine in a chemical reaction to form this compound. After it burns, it forms a white powder of the magnesium oxide. 

c) The iron reacts with water and oxygen to form hydrated iron(III) oxide, which we see as rust. Iron and steel rust when they come into contact with water and oxygen – both are needed for rusting to occur.

Explanation:

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