Final Exam Review - Unit 7 & 8

Over time, the accepted model for the atom has....

• never changed.
• changed once.
• gone through several revisions (different models).
• stayed constant despite advances in technology.

Which of the following statements is true about the nucleus of an atom?

• It contains most of the atoms mass (protons & neutrons).
• It holds the protons & the electrons.
• It's overall charge is negative.
• It is mostly empty space.

Which particle determines the identity (element type) of the atom?

• proton
• neutron
• electron

Which particle has no effect on the mass of an atom so we consider it's mass to be approximately 0?

• proton
• neutron
• electron

What is different about the two isotopes: Carbon-12 and Carbon-14?

• The number of protons
• The number of electrons
• The number of neutrons
• The electric charge

Which model allows you to show how many electrons are in each energy level of an atom?

• Rutherford's Model
• Bohr's Model
• Dalton's Model
• Model T

What is the atomic number and identity of this atom?

• 13, N
• 13, Al
• 14, N
• 27, Co

What is the mass number of this atom?

• 13
• 14
• 27
• 40

How many energy levels are used in this atom?

• 1
• 2
• 3
• 4

How many valence electrons does this atom have?

• 2
• 3
• 8
• 13