Write the formula of each of the following compounds. Water Calcium oxide Carbon dioxide Carbon monoxide Magnesium oxide Hydrogen Chloride Sodium chloride Potassium chloride Magnesium chloride Zinc chloride Nitric acid Sodium nitrate Sodium carbonate Potassium carbonate Calcium carbonate

The chemical formula is a notation used by scientists to show the number and type of atoms present in a molecule, using the atomic symbols and numerical subscripts. Water H 2 O Hydrogen chloride HCl Nitric acid HNO 3 Calcium oxide CaO Sodium chloride NaCl Sodium nitrate NaNO 3 Carbon dioxide CO 2 Potassium chloride KCl Sodium carbonate Na 2 CO 3 Carbon monoxide CO Magnesium chloride MgCl 2 Potassium carbonate K 2 CO 3 Magnesium oxide MgO Zinc chloride ZnCl 2 Calcium carbonate CaCO 3

E M B I B E

Basic Science For Class 7>Chapter 1 - The Language of Chemistry>Exercises>Q G

EASY

7th CBSE

IMPORTANT

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The valency of calcium is 2 and that of chlorine is 1. So, calcium chloride is $C a_{2} Cl$ .

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Important Questions on The Language of Chemistry

EASY

7th CBSE

IMPORTANT

Basic Science For Class 7>Chapter 1 - The Language of Chemistry>Exercises>Q G

The valency of both zinc and oxygen is

2

. So, zinc oxide is

Z n O .

MEDIUM

7th CBSE

IMPORTANT

Basic Science For Class 7>Chapter 1 - The Language of Chemistry>Exercises>Q H

Write the formula of each of the following compounds.

Water	Calcium oxide	Carbon dioxide	Carbon monoxide	Magnesium oxide
Hydrogen Chloride	Sodium chloride	Potassium chloride	Magnesium chloride	Zinc chloride
Nitric acid	Sodium nitrate	Sodium carbonate	Potassium carbonate	Calcium carbonate