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प्रश्न
Give two examples for the following :
Substances that are rigid and not compressible.
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उत्तर
Glass, stone, pen.
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संबंधित प्रश्न
Write your observation and conclusion for the following:
When few marbles are put in a glass half-filled with water.
Classify the following into solids, liquids and gases.
Oxygen, milk, common salt, wax, stone, water vapour, carbon-dioxide, sugar, mercury, coal, blood, butter, copper, coconut oil, kerosene.
Define the following term Element .
Name the phenomenon which causes the Formation of water vapour from water is
What is the approximate size of a molecule?
Give one difference between atoms and molecules.
Give a reason for the Electricity is not considered matter.
Differentiate between the following:
Atoms and molecules
Match the column.
| Column A | Column B |
| 1. iron and gold | a. molecules are very far apart |
| 2. melting | b. pure substance |
| 3. intermolecular space | c. non-metals |
| 4. compound | d. the space between the molecules |
| 5. gases | e. changes from solid to liquid |
| f. metals |
Write scientific reasons.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
