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प्रश्न
What are molecules?
उत्तर
Molecules are the smallest unit of matter. They exhibit all the properties of that kind of matter and is capable of independent existence.
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संबंधित प्रश्न
Give reasons:
A wooden table should be called a solid.
Give two reasons for saying that wood is a solid.
Fill in the blanks:
Any matter which has a definite ______ but no definite shape is called a ______.
The three main states of matter are solids, liquids, and gases. Compare the three states with reference to the following characteristics of matter
(a) volume
(b) shape
(c) compressibility
(d) diffusion.
Describe simple experiments to prove that gases have no definite volume or shape.
Explain the term ‘Interconversion of matter’. With reference to ice, water, and water vapour show diagrammatically the change of state of matter from solid to liquid to gaseous and back to the original state.
State the property of the following substance.
Magnesium reacts with dilute hydrochloric acid, liberating hydrogen gas.
______ soil is suitable for growing cotton.
Filtration method is effective in separating ______ mixture.
______ particles are tightly packed into a definite shape.
