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What is the definition of atom, …

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What is the definition of atom, molecule, compound and element?
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Punit Poonia 7 years, 10 months ago

Atoms- All the matter in the universe is made of tiny particles called Atoms. There are 92 different kinds of atoms. Element - when matter is made of only one kind of atom then it is called an Element. The fundamental substance which consists of only one kind of atom. Molecule - Smallest unit of chemical compound. When 2 or more atoms of same element combine together then we call them Molecule. Compound- Substance which are made by the combination of two or more kinds of elements are known as Compounds.
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