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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
Fill in the blank
In a _______ the substances are not combined chemically.
Write true or false
A heterogeneous mixture has a uniform composition throughout the mixture.
What is the difference between a pure substance and a mixture ?
Define Compounds
Name the elements present in Sugar
What is the proportion of element present in the following compound?
CO2
What is the proportion of element present in the following compound?
NO2
State three differences between water and air.
Write the molecular formulae of compound calcium oxide.
Write the molecular formulae of compound hydrogen sulphide.
Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to existence
Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to Separation of 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.
Write the chemical formula and name the elements present in the following compounds.
- Sodium chloride
- Potassium hydroxide
- Carbon dioxide
- Calcium oxide
- Sulphur dioxide
Explain the characteristics of compounds
Assertion: Oxygen is a compound.
Reason: Oxygen cannot be broken down into anything simpler.
Assertion: Air is a compound.
Reason: Air consists of carbon dioxide.
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.
Higher-Order Thinking questions:
Why is water considered a compound?
