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प्रश्न
Explain the term compounds.
उत्तर
A compound is a pure substance made up of two or more different elements combined chemically in a fixed proportion.
संबंधित प्रश्न
Write true or false
A heterogeneous mixture has a uniform composition throughout the mixture.
Name the elements which form water.
How will you justify that water is a compound?
State four important characteristics of compounds
What is the proportion of element present in the following compound?
CO2
Write the molecular formulae of compound lead sulphide.
State two characteristics of water which prove that it is a – compound.
Select the correct answer from the choice given below.
A compound
Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to existence
What is the molecular formula of the following compound?
Sulphuric acid
What is the molecular formula of the following compound?
glucose
What is the molecular formula of the following compound?
Methane
What are compounds? Give two examples.
Mention the uses of the following compounds.
- Baking soda
- Bleaching powder
- Quick lime
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.
Complete the table
| Compound | Constituent elements |
| Sodium carbonate | Sodium, Carbon. Oxygen |
| Water | |
| Calcium oxide | |
| Sugar | Carbon, Hydrogen, Oxygen |
Higher-Order Thinking questions:
Why is water considered a compound?
Reason out
Sand is also known as silica.
