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Worksheetsatomic quiz
Total questions: 9
Worksheet time: 11mins
what are atoms ?
who first proposed that everything int he world was made up of tiny particles
Ernest Rutherford
John Dalton
Democritus
James Chadwik
who discovered electron by 1897
J.J Thomson
Ernest Rutherford
Niels bohr
jhon dalton
what did Ernest Rutherford discover ?
electrons move around the nucleus
atom consist of postively charged protons and negatively charged electrons.
Mass is found in center of the atom
electrons dont move like orbit but in waves and clouds
Who concluded that atoms consisted largely of empty space with most of the mass concentrated in the center?
John Dalton
Niels Bohr
Ernest Rutherford
James Chadwick
what is atomic mass?
number of protons is equal to atomic mass
protons and nuetrons combined is called atomic mass
number of electron and protons combined is called atomic mass
true or false?
J.J Thomson discovered that energy of orbit depends on its size.
false
true
what is the greek word for atom
(a)
Which experiment discovered the nucleus of the atom?
J.J Thomson's plum pudding
Niels Bohr planetary model
Ernest Rutherford gold foil experiment
