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प्रश्न
Give two examples for the following :
Substances which do not change their states.
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उत्तर
Paper, sugar.
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संबंधित प्रश्न
Name the smallest particle from which matter is made up.
Write true or false for each statement. Rewrite the false statement correctly.
Solids can be compressed easily.
A substance which can change its state
Describe a simple experiment to illustrate that molecules are not at rest, but they constantly move.
Give reason :
When a teaspoon of sugar is added to half a glass of water and stirred, the water level in the glass does not rise.
Fill in the blank
The molecules are at a greater distance in ........ compared to liquids.
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 |
Multiple choice question.
A kind of matter which can sublime is
Water, mercury and bromine are similar to each other, because three are ______.
Give a reason for the following:
An empty tumbler lowered into a glass beaker containing water, on tilting shows bubbles of air coming out, but when not tilted, no bubbles are seen.
