8.5ABCDE Chemistry Unit Review

Which particles contribute to the mass of an atom the most? (2 answers)

• Protons
• Neutrons
• Electrons
• Neutrinos

The A in APE MAN stands for...

• Atoms
• Atomic mass
• Atomic number
• Atomic weight

Which set of labels are correct?

• Q-neutrons, R-protons, S-electrons, T-nucleus
• Q-nucleus, R-neutrons, S-electrons, T-protons
• Q-neutrons, R-nucleus, S-electrons, T-protons
• Q-protons, R-neutrons, S-electrons, T-nucleus

Which graphic shows the correct relationship between protons, neutrons, and electrons?

• A
• B
• C
• D

How many electrons fit on the third electron shell?

• 2
• 4
• 6
• 8

A mystery element's properties are listed on the table. Which statement is correct?

• The element is argon, and it is not very reactive.

• The element is argon, and it is highly reactive.

• The element is chlorine, and it is not very reactive.

• The element is chlorine, and it is highly reactive.

The mystery element's properties is listed below. Which statement is correct.  Number of protons: 10Valence electrons: 8

• The element is boron because it has 10 protons.
• The element is neon because it has 8 valence electrons.
• The element is neon because it has 10 protons.
• The element is boron because it has 8 valence electrons.

The mystery element's properties is listed below. Which statement is correct.  Number of protons: 10Valence electrons: 8

• The element is very reactive because it has 8 valence electrons.
• The element is nonreactive because it has 8 valence electrons.
• The element is very reactive because it has 10 protons.
• The element is nonreactive because it has 10 protons.

Which element is very reactive?

• Fluorine
• Krypton
• Calcium
• Gallium

Which element is nonreactive?

• Fluorine
• Krypton
• Calcium
• Gallium