Chapter 4

________________________ is an atom that is no longer neutral because of a gain or loss of electrons

• Proton

• Ion

• Nucleus

• Neutron

A ________________________ is an positive ion

• Cation

• Anion

A ________________________ is a negative ion

• Cation

• Anion

What happens to the charge of an atom when electrons are gained?

• Stays neutral

• Becomes positive

• Becomes negative

What happens to the charge of an atom when electrons are lost?

• Stays neutral

• Becomes positive

• Becomes negative

True or False: The most stable configuration of an atom is when electrons are in the orbitals with the highest possible energies.

• True

• False

Which model do modern day scientists use to describe an atom?

• Bohr Model

• Plum Pudding Model

• Electron Cloud Model

True or False: We can know both the exact location and speed of an electron in a given moment.

• True

• False

Which model has electrons in fixed circular orbitals that surround the nucleus?

• Bohrs Model

• Plum Pudding Model

• Electron Cloud Model

Which factor remains the same among isotopes of a given element?

• Number of neutrons

• Mass number

• Number of protons