Chemistry Unit 2

Who said matter can’t be divided into smaller pieces?

• Rutherford

• Democritus

• Dalton

• Thomson

Developed Billard Ball Model all elements are made of atoms

• Democritus

• Millikan

• Bohr

• Thomson

Gold Foil Experiment-discovered the “nucleus” in the experiment

• Bohr

• Democritus

• Dalton

• Rutherford

Plum Pudding Model

• Bohr

• Millikan

• Thomson

• Rutherford

His model says: Energy moves and orbits around the nucleus

• Dalton

• Thomson

• Bohr

• Democritus

Which is the location and charge of protons?

• Orbit nucleus; -1

• Nucleus; +1

• Nucleus; -1

• Nucleus; neutral

What is the location and charge of neutrons

• Nucleus; no charge

• Nucleus; +1

• Nucleus, -1

• Orbit nucleus; +1

What is the location and charge of electrons?

• Nucleus; +1

• Nucleus; no charge

• Orbit nucleus; -1

• Nucleus; -1

How does the mass of a neutron compare to the mass of a proton?

• Neutrons are heavier than protons

• Neutrons are lighter than protons

• Neutrons have the same mass as a proton

• Neutrons cancel out the weight of a proton

How does the mass of a neutron compare to the mass of an electron?

• Neutrons are lighter than electrons?

• Electrons weight less than neutrons

• Electrons weight more than neutrons

• Electrons cancel out the mass of neutrons