Structure of an atom

Which scientist first came up with a model of what the atom looks like?

• Dalton

• Thomson

• Bohr

• Rutherford

What is the difference between an atom and a molecule?

• molecules contain two or more atoms chemically joined together in a group

• an atom contains two or more molecules chemically joined together in a group

What charge do protons have?

• positive

• negative

• neutral (no charge)

Which subatomic particles have a negative charge?

• electrons

• protons

• neutrons

What is the name of the central part of an atom made up of neutrons and protons?

• nucleus

• centre

• quark

• neutrino

What are the names of the three subatomic particles?

• proton, neutron, electron

• protein, nutrient, electric

• positron, neutral, electron

How does the size of the nucleus compare to the size of the atom?

• the nucleus is tiny compared to size of the atom

• the nucleus takes up most of the space in the atom

Which scientist came up with the plum pudding model of an atom?

• Dalton

• Rutherford

• Thomson

• Bohr

Which subatomic particle has the lowest mass?

• proton

• electron

• neutron

Which subatomic particle has no charge?

• electron

• proton

• neutron