1. Chapter 9 9.5 The Laws Governing How Compounds Form
Chemical Names and Formulas
9.1 Naming Ions
9.2 Naming and Writing Formulas for
Ionic Compounds
9.3 Naming and Writing Formulas for
Molecular Compounds
9.4 Naming and Writing Formulas for
Acids and Bases
9.5 The Laws Governing How
Compounds Form
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2. Do Now: Write names for HBr H2SO4 NaOH Write formulas for
Hydrofluoric Acid
Phosphoric Acid
Potassium Hydroxide
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3. Do Now: Write names for HBr – Hydrobromic acid H2SO4 – Sulfuric acid
NaOH – Sodium Hydroxide
Write formulas for
Hydrofluoric Acid - HF
Phosphoric Acid – H3PO4
Potassium Hydroxide - KOH
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4. Classify each as an Acid, Molecular, Binary Ionic, or Ternary Ionic Compound:
CuSO V2S3
CS (NH4)3PO4
Fe(OH) HF
CaO P4Se3
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5. Practicing Skills: Chemical Names and Formulas
Naming Chemical Compounds
Does it start with H? If it does it is an acid.
Does it have a polyatomic ion? All polyatomic ions end in –ite or –ate except for Ammonium, Hydroxide, and Cyanide
Is it covalent or ionic? If it is covalent, use prefixes & -ide.
Can there be more than one cation (transition elements,Sn, or Pb)? If yes, use roman numerals to specify cation charge.
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6. Classify each as an Acid, Molecular, Binary Ionic, or Ternary Ionic Compound:
Bromine Pentachloride 5. Strontium Chloride
Lithium Ethanoate 6. Sulfur Dioxide
Zinc Phosphide Aluminum Hydroxide
Hydrochloric Acid Cobalt (III) Carbonate
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7. Practicing Skills: Chemical Names and Formulas
Writing Chemical Formulas From Names
Are there prefixes? If yes, use them to determine subscripts.
Is it an acid? Binary or ternary?
Does it end in something other than –ide? If yes, then polyatomic. Use table 9.3
Are there Roman Numerals? If yes, use to specify cation charge.
Make sure charges balance for ionic compounds
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8. END OF 9.5
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