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प्रश्न
Give a reason for the following:
Globules of mercury kept in a petri dish, which is shaken slowly, come together forming a big globule.
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उत्तर
This experiment concludes that there is a force of attraction between matter particles.
Mercury in particular has a powerful cohesive force between its molecules.
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संबंधित प्रश्न
Why do solids, liquids and gases differ in their physical state?
Define the following term Element .
Write true or false for each statement. Rewrite the false statement correctly.
Solids and liquids can flow.
For the following statements, say whether it describes a solid, a liquid or a gas.
Particles move about very quickly.
What is the approximate size of a molecule?
Define Molecule.
Give reason :
When a teaspoon of sugar is added to half a glass of water and stirred, the water level in the glass does not rise.
Fill in the blank
All matter is made up of tiny particles called .................
Write true or false for the statement. Rewrite the false statements correctly.
Matter cannot exist in different states.
Identify the odd term out and explain.
