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प्रश्न
Define: Molecule
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उत्तर
Molecule: A molecule can be defined as the smallest unit of an element or a compound which exhibits all the properties of that element or compound and has an independent existence. They are divisible into atoms.
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संबंधित प्रश्न
Match the Columns:
| Column A | Column B | ||
| (a) | Metals | (i) | Non-Reactive |
| (b) | Molecules | (ii) | Brittle |
| (c) | Non-Metals | (iii) | Lustrous |
| (d) | Noble Gases | (iv) | Smallest unit of Compound |
Indicate whether the following statement is true or false:
Metals reflect light and are good conductors of electricity
State four differences between – elements, compounds and mixtures with suitable examples.
Explain the term ‘mixture’.
Select the correct answer from the choice given below to complete the sentence :
Dust in air is an example of _________ mixture.
Give a reason for the following statement :
The filter paper made into a cone & placed in a funnel for filtering out the solid particles in a solid-liquid mixture should be moistened before placing it.
Elements : Combine to form compounds :: Compounds : ______.
Atoms: Fundamental particle of an element::______ : Fundamental particles of a compound.
How are elements classified?
Give the chemical formula for cane sugar.
