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प्रश्न
Define Compounds
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उत्तर
Compounds: Compounds are pure substances composed of two or more elements in definite proportion by mass and has a definite set of properties. The compound is made up of only one kind of molecules
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संबंधित प्रश्न
Write true or false
The constituents of a mixture can only be separated by chemical means.
Write true or false
Handpicking can be used as a separation technique if the particle size of the constituents of the mixture is the same.
Name the elements which form water.
How will you justify that water is a compound?
State four important characteristics of compounds
Write the molecular formulae of compound calcium oxide.
Write the molecular formulae of compound carbon monoxide
Give the example of a compound containing carbon and oxygen.
State two characteristics of water which prove that it is a – compound.
Tabulate a comparative chart – to differentiate between elements, compounds, and mixtures. Differentiate them with reference to the term
Explain the difference between Mixture and compounds.
Explain the term mixture.
State true of false. If false, give the correct statement.
Compounds and elements are pure substances.
What are compounds? Give two examples.
Match the following.
| Iron | For making wires |
| Copper | Sewing needle |
| Tungsten | As a fuel for ignition in rocket |
| Boron | Making the filament of a bulb |
State whether true or false. If false, correct the statement.
A compound cannot be broken into simpler substances chemically.
Write any two properties of a compound.
Reason out
Sand is also known as silica.
A compound has a fixed ______.
Name the compounds used in fertilizers.
