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प्रश्न
Fill in the blank
In a _______ the substances are not combined chemically.
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उत्तर
In a mixture the substances are not combined chemically.
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संबंधित प्रश्न
Give the example of a compound containing carbon and oxygen.
State two characteristics of water which prove that it is a – compound.
State true of false. If false, give the correct statement.
Compounds and elements are pure substances.
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.
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.
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?
When does the pressure of the gas increase?
