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प्रश्न
Define Element.
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उत्तर
It is defined as that pure substance that contains only one type of atoms e.g. hydrogen, chlorine.
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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.
Differentiate between the following.
Atoms and Molecules .
Write true or false for each statement. Rewrite the false statement correctly.
Solids and liquids can flow.
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 |
Differentiate between the following:
Atoms and molecules
Write whether the following statement is true or false.
Solids have the largest inter-molecular space.
Write whether the following statement is true or false.
A gas has no free surface.
Write scientific reason.
Lemon sharbat has a sweet, sour and salty taste and it can be poured in a glass.
Write scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
Write scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
