1. Slide 1 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?

2. 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

3. Slide 3 of 15 © Copyright Pearson Prentice Hall Naming and Writing Formulas for Molecular Compounds > Some guidelines for naming binary molecular compounds: Name the elements in the order listed in the formula. Use prefixes to indicate the number of each kind of atom. 9.3 Naming Binary Molecular Compounds

4. Slide 4 of 15 © Copyright Pearson Prentice Hall Naming and Writing Formulas for Molecular Compounds > Omit the prefix mono- when the formula contains only one atom of the first element in the name. The suffix of the name of the second element is -ide. Two common names for molecular compounds are ammonia (NH 3 ) and water (H 2 O) 9.3 Naming Binary Molecular Compounds

5. Slide 5 of 15 © Copyright Pearson Prentice Hall Naming and Writing Formulas for Molecular Compounds > Name the following molecular compounds:

6. Slide 6 of 15 © Copyright Pearson Prentice Hall Naming and Writing Formulas for Molecular Compounds > Write formulas for the following molecular compounds:

7. © Copyright Pearson Prentice Hall Section Quiz -or- Slide 7 of 15 Continue to: Launch: Assess students’ understanding of the concepts in Section 9.3. 9.3 Section Quiz.

8. © Copyright Pearson Prentice Hall Slide 8 of 15 9.3 Section Quiz. 1.Which of the following compounds is named INCORRECTLY? a.CS 2, carbon disulfide b.BCl 3, boron trichloride c.IF 7, iodine heptafluoride d.PCl 5, phosphorus hexachloride

9. © Copyright Pearson Prentice Hall Slide 9 of 15 2.Which of the following molecular compounds is named INCORRECTLY? a.SbCl 3, antimony trichloride b.C 2 O 5, dicarbon pentoxide c.CF 4, carbon tetrafluoride d.H 3 As, hydrogen arsenide 9.3 Section Quiz.

10. © Copyright Pearson Prentice Hall Slide 10 of 15 3.The correct formula for tetraphosphorus trisulfide is a.P 3 S 4 b.S 3 P 4 c.P 4 S 3 d.S 4 P 3 9.3 Section Quiz.

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