Unit 2.6-2.7: Molecular and Ionic Compounds

Multiple Choice

Classify as Molecular Formula, Empirical Formula, or Both: $$SO_2$$

• Molecular

• Empirical

• Both

Multiple Choice

Classify as Molecular Formula, Empirical Formula, or Both: $$B_2H_6$$

• Molecular

• Empirical

• Both

Multiple Choice

What is the charge of a sulfur atom with 16 neutrons and 18 electrons?

• +2

• -2

• +18

• -18

Multiple Choice

How many electrons does $$^{79}Se_{ }^{-2}$$ have?

• 77

• 79

• 81

• -158

Multiple Select

Which of the following are ionic?

• $$N_2O$$

• $$Na_2O$$

• $$CaCl_2$$

• $$SF_4$$

Multiple Select

Which of the following are ionic?

• $$N_2O$$

• $$Na_2O$$

• $$CaCl_2$$

• $$SF_4$$

Multiple Select

Which of the following are molecular?

• $$CBr_4$$

• $$FeS$$

• $$P_4O_6$$

• $$PbF_2$$

Open Ended

Can you tell from a formula alone if a substance is ionic or molecular? Why or Why not?