In which state are the atoms close together, but moving randomly?

• Solid

• Liquid

• Gas

In which state are the atoms far apart and moving randomly?

• Solid

• Liquid

• Gas

In which state are the atoms close together and vibrating around a fixed position?

• Solid

• Liquid

• Gas

Where is most of the mass of an atom found?

• Shells

• Electrons

• Nucleus

Which particle inside the atom has a much smaller mass than the others?

• Proton

• Neutron

• Electron

What is the charge of a neutron?

• Neutral

• Positive

• Negative

What is the charge of a proton?

• Neutral

• Positive

• Negative

What is the charge of an electron?

• Neutral

• Positive

• Negative

Who thought electrons were scattered through an atom?

• Dalton

• Thomson

• Rutherford

• Bohr

Who discovered the atomic nucleus?

• Dalton

• Thomson

• Rutherford

• Bohr