GCSE Atoms Isotopes and Radiation

Which model of the atom is a sphere of positive charge with negative electrons stuck in it?

• Nuclear model

• Plum pudding model

• Bohr model

• Chadwick model

Which model of the atom has neutrons in the nucleus?

• Nuclear model

• Plum pudding model

• Bohr model

• Chadwick model

Which model of the atom has electrons in shells at certain distances from the nucleus?

• Nuclear model

• Plum pudding model

• Bohr model

• Chadwick model

Which model of the atom has a positively charged nucleus in a cloud of negative electrons?

• Nuclear model

• Plum pudding model

• Bohr model

• Chadwick model

What is the radius of an atom?

• 10^-8 m

• 10^-10 m

• 10^-12 m

• 10^-14 m

What is the radius of a nucleus?

• 10^-8 m

• 10^-10 m

• 10^-12 m

• 10^-14 m

Which particle has no mass?

• proton

• neutron

• electron

Which particle has a negative charge?

• proton

• neutron

• electron

Which particle has a positive charge?

• proton

• neutron

• electron

Which particle has no charge?

• proton

• neutron

• electron