Question

Name the scientist:
a) _________proposed the idea of atom as the smallest possible particle of any
substance.
b) _________performed the gold foil experiment with alpha particles to conclude the
positive charge at the centre of an atom.
c) _________discovered the protons.
d) _________discovered the neutrons of an atom.
e) _________modified the atomic model with electrons revolving around the nucleus
in stationary paths

TNSCERT Class 9 General Science Ch4 Atomic Structure

Answer 1

A ..... John Dalton B.......Rutherford C.......E Goldstein D.......J Chadwick E......Neils Bohr

Answer 2

a) Jhon dalton proposed the idea of atom as the smallest possible particle of any substance. 
b) Rutherford performed the gold foil experiment with alpha particles to conclude the positive charge at the center of an atom. 
c) Gold stein discovered the protons. 
d) Chadwick discovered the neutrons of an atom. 
e) Neils bhor modified the atomic model with electrons revolving around the nucleus in stationery paths.