IGCSE Unit 22

Who suggested plum pudding model?

• dalton

• thompson

• rutherford

• chadwick

In the plum pudding model of atom, the plums represent .........

• electrons

• protons

• neutrons

• atom

the overall charge of plum pudding atom is

• positive

• negative

• neutral

Thompson model said that atoms are made of ball of _________ charged

• positive

• negative

• neutral

• infinite

Who discovered the electron?

• dalton

• thompson

• rutherford

• chadwick

In the plum pudding model of atom, the pudding represents .........

• electrons

• protons

• negative charge

• positive charge

Atomic model discovered by Rutherford is called _____________________ model

• plum pudding

• solar system

• gold foil

• alpha

In solar system model, the ___________ orbit the ____________

• electron, nucleus

• nucleus, electron

• proton, nucleus

• nucleus, proton

Who did the gold foil experiment?

• dalton

• thompson

• rutherford

• chadwick

In gold foil experiment, the particles are packed into a dense _______ in the center of the atom

• nucleus

• proton

• electron

• neutron