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Question

Write the chemical formulae of the following compounds.

  1. Sulphur dioxide
  2. Calcium oxide

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Solution

Compound - It is a pure substance made by a chemical reaction of two or more different elements in a fixed proportion.

For example – Water, sugar, and table salt.

Chemical formula - The short representation of a compound using elemental symbols is called a chemical formula of that compound.

The chemical formula shows the different types of elements involved and the number of atoms in the compound.

COMPOUND

CHEMICAL FORMULA

Sulphur dioxide

SO2

Calcium oxide

CaO


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