Slide 1 of 15 © Copyright Pearson Prentice Hall Naming and Writing Formulas for Molecular Compounds > Carbon and oxygen combine to form _________ _________ (CO) and _________ ___________ (CO 2 ), but these two invisible gases are very different. 9.3 Naming Binary Molecular Compounds Sitting in a room with small amounts of CO 2 in the air would not present any problems. If the same amount of CO were in the room, you could die of asphyxiation. A naming system that distinguishes between these two compounds is needed.

Slide 2 of 15 © Copyright Pearson Prentice Hall Naming and Writing Formulas for Molecular Compounds > A prefix in the name of a binary molecular compound tells how many atoms of an element are present in each molecule of the compound. 9.3 Naming Binary Molecular Compounds

Slide 3 of 15 © Copyright Pearson Prentice Hall Naming and Writing Formulas for Molecular Compounds > Some guidelines for naming binary _______________ compounds: Name the __________ in the ________ listed in the ___________. Use __________ to indicate the _________ of each kind of ________. 9.3 Naming Binary Molecular Compounds

Slide 4 of 15 © Copyright Pearson Prentice Hall Naming and Writing Formulas for Molecular Compounds > Omit the prefix _________- when the formula contains only one atom of the _________ _____________ in the name. The suffix of the name of the ________ element is -_______. 9.3 Naming Binary Molecular Compounds

Slide 5 of 15 © Copyright Pearson Prentice Hall Naming and Writing Formulas for Molecular Compounds > Name the following molecular compounds: a.PCl 5 b. CCl 4 c. NO 2 d. N 2 F 2 e. P 4 O 6 f. XeF 2 g. SiO 2 h. Cl 2 O 7

Slide 6 of 15 © Copyright Pearson Prentice Hall Naming and Writing Formulas for Molecular Compounds > Writing Formulas for Binary Molecular Compounds How do you write the formula for a binary molecular compound? 9.3 Use the _______ in the name to tell you the __________ of each ____________ in the formula. Then write the correct symbols for the two elements with the appropriate subscripts.

Slide 7 of 15 © Copyright Pearson Prentice Hall Naming and Writing Formulas for Molecular Compounds > Silicon carbide is a hard material like diamond. The name silicon carbide has no ___________, so the _____________ of silicon and carbon must be one. Thus, the formula for silicon carbide is ___________. 9.3 Writing Formulas for Binary Molecular Compounds

Slide 8 of 15 © Copyright Pearson Prentice Hall Naming and Writing Formulas for Molecular Compounds > Write the formulas for the following binary molecular compounds: a.nitrogen tribromide b.dichlorine monoxide c.sulfur dioxide d.dinitrogen tetrafluoride