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CBSE - Class 9 > Science > Atoms and Molecules Worksheets

Free CBSE - Class 9 Science - Atoms and Molecules worksheets

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1.
A 0.24 g sample of compound of oxygen and boron was found by analysis to contain 0.096 g of boron and 0.144 g of oxygen. Calculate the percentage composition of the compound by weight.
2.
When 3.0 g of carbon is burnt in 8.00 g oxygen, 11.00 g of carbon dioxide is produced. What mass of carbon dioxide will be formed when 3.00 g of carbon is burnt in 50.00 g of oxygen? Which law of chemical combination will govern your answer?
3.
What are polyatomic ions? Give examples.
4.
Write the chemical formulae of the following. (a) Magnesium chloride
5.
Write the chemical formulae of the following. (b) Calcium oxide
6.
Write the chemical formulae of the following. (c) Copper nitrate
7.
Write the chemical formulae of the following. (d) Aluminium chloride
8.
Write the chemical formulae of the following. (e) Calcium carbonate.
9.
Give the names of the elements present in the following compounds. (a) Quick lime
10.
Give the names of the elements present in the following compounds. (b) Hydrogen bromide
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Chapters in CBSE - Class 9 Science

Diversity in the Living Organisms Worksheet Force and Laws of Motion Worksheet Gravitation Worksheet Improvement in Food Resources Worksheet Is Matter Around Us Pure Worksheet Matter in Our Surroundings Worksheet Motion Worksheet Natural Resources Worksheet Sound Worksheet Structure of the Atom Worksheet The Fundamental Unit of Life Worksheet Tissues Worksheet Why Do We Fall Ill? Worksheet Work and Energy Worksheet

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