Unit 4 Covalent Standard

Multiple Choice

Which of the following rules is an exception when naming covalent compounds?

• Do not use 'mono' for '1' on the first element

• Always use 'mono' for '1' on the first element

• Add an -ide ending to the first element

• Never use prefixes

Fill in the Blanks

The prefix 'tetra-' is used in naming covalent compounds to indicate the presence of

atoms.

Open Ended

Explain why the name 'dihydrogen dioxide' is used for H2O2 instead of 'hydrogen peroxide' in the context of covalent compound naming rules.

Multiple Choice

Select all the correct names for the following formulas: CO2, P4H10, SF6, CH4.

• Carbon dioxide, Tetraphosphorus decahydride, Sulfur hexafluoride, Carbon tetrahydride

• Carbon monoxide, Tetraphosphorus pentahydride, Sulfur hexafluoride, Carbon tetrahydride

• Carbon dioxide, Tetraphosphorus decahydride, Sulfur hexafluoride, Methane

• Carbon dioxide, Tetraphosphorus decahydride, Sulfur hexafluoride, Carbon trihydride

Fill in the Blanks

The prefix 'mono' means

in covalent compound naming.

Open Ended

Explain the steps you would take to determine the chemical formula for a covalent compound given its name.

Multiple Choice

Which prefix is used to indicate the number 4 in the name of a covalent compound?

• tetra

• hexa

• penta

• octa

Multiple Select

Which of the following are correct chemical formulas for the given names?

• C2O4 for dicarbon tetroxide

• HS for hydrogen monosulfide

• P5N3 for pentaphosphorus trinitride

• SO4 for sulfur pentoxide

Fill in the Blanks

Covalent bonds are formed when

elements share electrons.

Open Ended

Summarize the main differences between polar covalent bonds and pure (nonpolar) covalent bonds as explained in the lesson.