MAHARASHTRA Class 9 Chemistry Measurement of Matter
Atomic Mass and Molecular Mass
Scientists use carbon-12 scale (atomic mass unit) to compare masses of different atoms and molecules of elements and compounds.
Atomicity is the number of atoms constituting a molecule. Valency is the combining capacity of elements.
The chemical formula of a compound shows the exact number of constituent atoms.Laws of Chemical Combination
Laws of Chemical CombinationRadicals
Radicals
