Question

Give examples of the following reactions:

Elements combining to form a compound.

Compound breaking to form elements.

Compounds combining to form new compound/s.
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Answer 1

Elements combining to form a compound

→Combination reaction

Compound breaking to form elements

→Decompositon reaction

Compounds combining to form new compounds

→ Displacement reaction

Hope this helps you

Answer 2

Answer:

1) Element combining to form a compound:

Iron+sulphur=Iron sulphide

Or, Fe+S---->FeS

2)Compounds breaking to form elements:

Water------> hydrogen+oxygen

Or,2H20 ------>2H2+ O2

3) Compounds combing to form new compounds:

Copper oxide+ carbon dioxide---->Copper carbonate

Or,CuO+ CO2---->CuCO3

In reaction 1) and 3) heat is required, while i reaction 2) takes place when an electric current is passed through water.

Explanation: