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प्रश्न
Define matter.
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उत्तर
Anything that has mass and occupies space is called matter.
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संबंधित प्रश्न
Classify the following into solid, liquid and gas:
Coal, kerosene, wood, oxygen, sugar, blood, water vapour, milk, wax.
Name the phenomenon which causes the Formation of water vapour from water is
Fill in the blank
All the molecules of a substance are .............
Match the following columns
| Column A | Column B | ||
| A. | A molecule is composed of | i. | does not exist free in nature. |
| B. | Ice, water and water vapour | ii. | can vibrate only up to about `10^-10`m from their mean position. |
| C. | An atom | iii. | atoms. |
| D. | Gases | iv. | are the three states of water. |
| E. | The molecules of a solid | v. | occupy space |
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What are the forces of cohesion and adhesion?
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Multiple choice question.
All kinds of matter
Write a scientific reason.
Hydrogen is combustible, oxygen helps combustion, but water helps to extinguish fire.
Write scientific reasons.
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