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प्रश्न
Define: Atom
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उत्तर
Atom: An atom is the smallest indivisible unit of an element which exhibits all the properties of that element and may or may not have an independent existence. An atom is the smallest indivisible unit of an element which exhibits all the properties of that element and may or may not have an independent existence.
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संबंधित प्रश्न
Give one example for the following types of mixtures:
liquid-gas homogenous mixture
Give two examples of Metals.
Give one use of the following substance:
Coal
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Acetic Acid
Fill in the blank
_________ refers to the number of atoms in the molecule of an element
Give the name of the radical - NO3
‘The modern periodic table consists of elements arranged according to their increasing atomic numbers’. With reference to elements with atomic numbers 1 to 20 only in the periodic table – differentiate them into – metallic elements, metalloids, non-metals & noble gases.
State five different characteristics of compounds.
Select the correct answer from the choice given below to complete the sentence :
Dust in air is an example of _________ mixture.
Name the process associated with the following
A fine beam of light entering through a small hole in a dark room illuminates the particles in its paths.
