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प्रश्न
Give two examples for the following :
Substances which do not change their states.
एक शब्द/वाक्यांश उत्तर
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उत्तर
Paper, sugar.
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Composition of Matter
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संबंधित प्रश्न
Define: Solid
Fill in the blank:
The molecules are made up of ________
Give reason Pure substances have fixed melting or boiling point .
Write whether the following statement are true or false.
A gas has no free surface.
Select the correct alternative
The molecules ____________
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 |
What are the forces of cohesion and adhesion?
Write whether the following statement is true or false.
Solids have the largest inter-molecular space.
Give two examples.
Liquid element
Write scientific reason.
A solid matter has the properties of definite shape and volume.
