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प्रश्न
Give the example of a compound containing calcium and oxygen.
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उत्तर
Example of Atoms of a different element forming a compound
Calcium oxide, 1 atom of calcium 1 atom of O = CaO
संबंधित प्रश्न
Write true or false
A heterogeneous mixture has a uniform composition throughout the mixture.
State four important characteristics of compounds
Name the elements present in Marble
What is the proportion of element present in the following compound?
NO2
Write the molecular formulae of compound lead sulphide.
Give the example of a compound containing hydrogen and oxygen.
Give the example of a compound containing nitrogen and oxygen.
State two characteristics of water which prove that it is a – compound.
What is the molecular formula of the following compound?
Hydrochloric acid
State true of false. If false, give the correct statement.
Compounds and elements are pure substances.
State whether true or false. If false, correct the statement.
Aspirin is composed of 60% Carbon, 4.5% Hydrogen and 35.5% Oxygen by mass. Aspirin is a mixture.
Sodium chloride is used as table salt and for flavoring and preserving food.
Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.
Name a non-metal which is known to form the largest number of compounds.
Which of the following are not compounds?
- Chlorine gas
- Potassium chloride
- Iron
- Iron sulphide
- Aluminium
- Iodine
- Carbon
- Carbon monoxide
- Sulphur powder
Classify the following as element and compound,
- Silver
- Ammonia
- Water
- Mercury.
Write any two properties of a compound.
Higher-Order Thinking questions:
Why is water considered a compound?
Name the compounds used in fertilizers.
