Particulate Nature of Matter
CBSE · Class 8 · Science
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What are constituent particles of matter?
Answer
Constituent particles are the basic units that make up a larger piece of a substance or material. They are extremely small particles that cannot be broken down further and are the building blocks of a…
Why can we taste sugar in water even when we cannot see sugar particles after dissolving?
Answer
When sugar dissolves in water, it breaks up into its constituent particles which are too small to be seen. These tiny particles spread throughout the water and occupy the spaces between water particle…
What are interparticle forces of attraction?
Answer
Interparticle forces of attraction are attractive forces that hold the constituent particles of matter together. The strength of these forces depends on the nature of the substance and the distance be…
Why do solids have a fixed shape and volume?
Answer
Solids have a fixed shape and volume because their particles are tightly packed with very strong interparticle forces of attraction. These strong forces hold particles in fixed positions, allowing the…
What is melting point?
Answer
Melting point is the minimum temperature at which a solid melts to become a liquid at atmospheric pressure. At this temperature, particles vibrate so vigorously that they overcome the strong interpart…
Why do liquids take the shape of their container but have fixed volume?
Answer
Liquids take the shape of their container because their particles can move freely within a limited space due to weaker interparticle forces compared to solids. However, they have fixed volume because …
What is boiling point?
Answer
Boiling point is the temperature at which a liquid boils and turns into vapour at atmospheric pressure. At this temperature, particle movement becomes so vigorous that they can escape from the liquid …
How do gases differ from solids and liquids in terms of shape and volume?
Answer
Gases have neither fixed shape nor fixed volume. They take the shape of their container and expand to fill the entire available space because their particles move freely in all directions with negligi…
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
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