Fall Semester Final Review

A. Atomic number is by definition also the number of ___________ in the nucleus of an atom.

• electrons
• neutrons
• protons

H. Most of the mass of an atom is found it its

• Nucleus
• Inner electron shells
• Valence shell
• Electron cloud

K. Vanadium Atomic Mass= 51, Atomic Number= 23. Determine the number of Protons.

• + 23
• +28

L. Vanadium Atomic Mass= 51, Atomic Number= 23. Determine the number of Electrons.

• -23
• -28

S. How many electrons can be found in the first energy level of an atom? (think of Bohr models)

• 2
• 4
• 6
• 8

U. Atomic mass =

• protons + neutrons
• protons + electrons
• electrons + neutrons

V. Select all the examples of Transition Metals (Groups 3-12)

• Iron
• Nickel
• Gold
• Platinum
• Hydrogen

Y. Noble gases have ___ valence electrons.

• 1
• 8
• 18

Question B. Alkali Metals are so reactive that if they are exposed to water they

• dissolve
• explode

Question C: Oobleck is a

• colloid
• suspension