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Transcript of Slide 1 of 15 © Copyright Pearson Prentice Hall Naming and Writing Formulas for Molecular Compounds...
Slide 1 of 15
© Copyright Pearson Prentice Hall
Naming and Writing Formulas for Molecular Compounds
>
Carbon and oxygen combine to form _________ _________
(CO) and _________ ___________ (CO2), but these two
invisible gases are very different.
9.3 Naming Binary Molecular Compounds
Sitting in a room with small amounts of CO2 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.PCl5 b. CCl4 c. NO2 d. N2F2
e. P4O6 f. XeF2 g. SiO2 h. Cl2O7
Slide 6 of 15
© Copyright Pearson Prentice Hall
Naming and Writing Formulas for Molecular Compounds
> Writing Formulas for BinaryMolecular 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 BinaryMolecular Compounds