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प्रश्न
What are the characteristics of particles of matter?
What are the characteristic properties of particles of matter?
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उत्तर
- Matter is made up of small particles that humans cannot perceive with their naked eyes.
- Spaces exist between the particles of matter.
- Matter particles are attracted to one another by intermolecular interactions. Solids have the greatest attraction forces, whereas gasses have the least. Intermolecular forces exist between solids and gases.
- Matter particles are constantly moving rather than stationary.
- As intermolecular spaces expand, intermolecular forces decrease, and vice versa.
- The kinetic energy of molecules increases as the temperature rises.
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संबंधित प्रश्न
Define interconversion of states of matter.
Write whether the following statement is true or false.
All solids, on heating, first change to the liquid and then to the gaseous state always.
Match the columns.
| (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) change from solid to liquid |
| (f) metals |
If an object is taken to the moon from the earth what will be its mass ?
Write your observation and conclusion for the following,
When a small stone is gently dipped into a glass filled with water.
Fill in the blank
Matter is anything that has ______ and occupies ______
Which one of the following statements is not true?
- the molecules in a solid vibrate about a fixed position
- the molecules in a liquid are arranged in a regular pattern
- the molecules in a gas exert negligibly small forces on each other, except during collisions
- the molecules of a gas occupy all the space available
Give reasons for the following:
Sugar can be distinguished from talcum powder using water.
Define the Solid and give two examples.
The property to flow is unique to fluids. Which one of the following statements is correct?
