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प्रश्न
What are the characteristics 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 the following term.
Element
Write your observation and conclusion for the following.
When a small stone is gently dipped into a glass filled with water.
How will you prove by an experiment that solids occupy space ?
Fill in the blank:
Liquids have no definite ............
For the following statement, say whether it describes a solid, a liquid or a gas.
Particles move about very quickly.
Name the phenomenon which cause the following change:
Conversion of water into steam.
Give reason Electricity is not considered matter .
Fill in the blank
The physical state of a substance, which has a fixed volume but no fixed shape is _______
When sugar is dissolved in water, there is no increase in the volume. Which characteristic of matter is illustrated by this observation?
A piece of chalk can be broken into small particles by hammering but a piece of iron cannot be taken into small particles by hammering. Which characteristic of the particles of matter is illustrated by these observations?
