• 0.5 M

• 1.0 M

• 4.0 M

• 8.0 M

What is the name of the following compound based on the Lewis-Dot structure? (SC.912.P.8.7)

• sulfur oxide

• sulfur trioxide

• monosulfur oxide

• monosulfide trioxidea

What are the resulting product(s) formed when magnesium (Mg) metal reacts with copper (II) sulfate (CuSO4) in a single replacement (displacement) reaction?

• Cu2SO4 + Mg

• MgSO4 + Cu

What is the total number of atoms found in one formula unit of aluminum phosphate (AlPO4)? (SC.912.P.8.7)

• 6

• 7

• 8

• 12

What is the electron configuration for an atom of nitrogen in its ground state? (SC.912.P.8.4)

• 1s2 2s2 3s3

• 1s2 2s2 2p3

• 1s2 2s2 3p2

• 1s2 2s2 3s2 4s2

What would happen to the energy of an electromagnetic wave if the frequency of the wave were to be cut in half?

• The energy of the wave would reduce by a factor of 2.

• The energy of the wave would reduce by a factor of 4.

• The energy of the wave would increase by a factor of 2.

• The energy of the wave would increase by a factor of 4.

A neutral fluorine atom has nine electrons. Which of the following is the correct orbital diagram for an atom of fluorine in the ground state? (SC.912.P.8.4)

• [Image: Orbital diagram with 1s, 2s, and 2p orbitals filled according to Hund's rule]

• [Image: Orbital diagram with 1s, 2s, and 2p orbitals not filled according to Hund's rule]

Which of the following correctly names the ionic compound Mg3(PO4)2? (SC.912.P.8.7)

• magnesium phosphate

• magnesium phosphide

• magnesium phosphorus

• magnesium phosphorus tetroxide

The reaction below between methane (CH4) and oxygen (O2) producing carbon dioxide (CO2) and water (H2O) can be classified as which type of chemical reaction? (SC.912.P.8.8)

• synthesis

• combustion

• decomposition

• single replacement

Which set of coefficients will correctly balance the following chemical reaction? (SC.912.P.8.9) Fe + HCl → FeCl2 + H2

• 1, 2, 1, 2

• 2, 1, 2, 1

• 1, 2, 1, 1

• 2, 1, 1, 1