Unit 2: Atomic Models

Which subatomic part is not found in the nucleus?

• Proton

• Neutron

• Electron

• None of them

Which subatomic part is found in the nucleus and has a positive charge?

• Proton

• Neutron

• Electron

• None of them

Which subatomic particle is in the nucleus and has a neutral charge?

• Proton

• Neutron

• Electron

• None of them

If you could add a proton to an atom, what would you change about the atom?

• Its charge only

• Its mass only

• Its chemical identity

• Nothing

If you could add a neutron to an atom, what would you change about the atom?

• Its charge only

• Its mass only

• Its chemical identity

• Nothing

If you could add a electron to an atom, what would you change about the atom?

• Its charge only

• Its mass by a lot

• Its chemical identity

• Nothing

What is the term that explains how atoms of one element have an atomic mass on the periodic table that is not (usually) a whole number?

• Relative Abundance

• Ions

• Periodic Law

• Atomic Theory

What is ironic about a cation?

• It has lost an electron, and gained a negative charge.

• It has lost an electron, but gained a positive charge.

• It has gained an electron, but lost a positive charge.

• It has lost an electron, and lost a positive charge.

Which theorist developed the idea of the atom being an indivisible sphere like a bowling ball?

• Democritus

• Thomson

• Dalton

• Schrödinger

Which theorist developed the idea of the atom being an a mixed substance like plum pudding where the electrons flowed in a positive sea?

• Democritus

• Thomson

• Dalton

• Schrödinger