fundamental unit of life class 9

Fundamentals of Chemistry pdf Notes Class 9 Chemistry Chapter 1 Learning Objective Chemistry Introduction Branches of Chemistry ->Physical Chemistry->Organic Chemistry->Inorganic Chemistry->Biochemistry->Industrial Chemistry->Nuclear Chemistry->Environmental Chemistry->Analytical Chemistry Basic Definitions Elements, Compounds and Mixtures Atomic Number, Mass Number Relative Atomic Mass and Atomic Mass Unit Empirical Formula, Molecular Formula Molecular Mass and Formula Mass Chemical Species Ions (Cations, …

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