Names and Formulas for molecular compounds

phosphorus pentachloride

tetraphosphorus decoxide

dihydrogen monoxide

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Answer explanation

The first element does got get "mono"

Eliminate the double vowel for mono-oxide and end up with monoxide.

Answer explanation

Calcium is a metal, so this is named as an ionic compound. We did these in class in the last unit when we named the compounds we drew. If you don't remember, no worries. We will practice it A LOT more before moving on to chemical reactions.

Answer explanation

no "mono" on the first element

tetra means 4, chlorINE becomes chlorIDE

Answer explanation

di means 2 so dinitrogen

tetra means 4, drop the double vowel so tetroxide