Question

Can any one give some problems from chemistry class 9th of chapter "atoms and molecules" and along with questions also give the final answer( please don't give from NCERT science text book)

Answer 1

what is atom
what is valency
what is atomicity
what are ions
what is molecular mass
what is molecule
state law of conservation of mass
state law of definate proportion of mass
postulates of Dalton atomic theory
what is chemical formula