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Covalent Compounds Formula to Name

Covalent Compounds Formula to Name. Binary Covalent Compounds. Covalent compound. Definition. Covalent bond atoms share electrons. Binary Covalent Compound compound made from two non-metals that share electrons. Non metal. Non metal. Identifying & Naming Binary Covalent.

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Covalent Compounds Formula to Name

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  1. Covalent CompoundsFormula to Name

  2. Binary Covalent Compounds

  3. Covalent compound Definition Covalent bond atoms share electrons Binary Covalent Compound compound made from two non-metals that share electrons Non metal Non metal

  4. Identifying & Naming Binary Covalent • These compounds have: • 2 elements (“binary”) • Both non-metals (“covalent”) • To name these compounds: • Write the name of the first element with the prefix indicating the number of atoms (except don’t use “mono-”) • Write the name of the second element with the prefix indicating the number of atoms (including “mono-”) and the suffix “ide”

  5. Covalent Prefixes Page 269of your book has the following chart

  6. Example #10 P2O5

  7. Example #10 2 = “di-” Phosphorus P2O5 Oxygen 5 = “penta-” Use “-ide” Diphosphorus pentaoxide

  8. Example #11 SiO2

  9. Example #11 Don’t use “mono-” on first element Silicon SiO2 Oxygen 2 = “di-” Use “-ide” Silicon dioxide

  10. Let’s Practice CO2 N2O4 P4O10 CO Example: Write the name for the following compounds

  11. Let’s Practice CO2 N2O4 P4O10 CO Carbon dioxide Dinitrogen tetraoxide Tetraphosphorus decaoxide Carbon monoxide Example: Write the name for the following compounds

  12. Naming Chemical Formulas Starts with a metal or NH4 Does not contain a metal = Binary Covalent compound 2 capital letters = Binary Ionic More than 2 elements = Polyatomic Ionic Nomenclature Summary

  13. Mixed Practice Na2O K3PO4 Cu(OH)2 (NH4)2S MgCl2 Example: Write the name for the following compounds

  14. Mixed Practice Na2O K3PO4 Cu(OH)2 (NH4)2S MgCl2 Sodium oxide Potassium phosphate Copper (II) hydroxide Ammonium sulfide Magnesium chloride Example: Write the name for the following compounds

  15. Covalent CompoundsName to Formula

  16. Identifying & Naming Binary Covalent • These compounds: • Use covalent prefixes • To write these formulas: • Write the symbols of the first and second element • Use the covalent prefixes (assume the first element is “1” if there’s no prefix) as the subscripts to show number of atoms. Atoms do not form charges when bonding covalently…you DO NOT need to worry about charges with this type!

  17. Example #7 Dinitrogen Tetraoxide

  18. Example #7 “Di-” = 2 N Dinitrogen Tetraoxide O “Tetra-” = 4 N2O4

  19. Example #8 Silicon dioxide

  20. Example #8 “Mono-” is not written for the first element Si Silicon dioxide O “Di-” = 2 SiO2

  21. CAUTION!!! “di” and “bi” do not mean the same thing! di- bi- Stands for “2” in covalent compounds Means there’s a hydrogen in the polyatomic anion Carbon dioxide = CO2 Sodium biphosphate = Na2HPO4

  22. Let’s Practice Carbon monoxide Nitrogen dioxide Diphosphorus pentaoxide Example: Write the following chemical formulas

  23. Let’s Practice Carbon monoxide Nitrogen dioxide Diphosphorus pentaoxide CO NO2 P2O5 Example: Write the following chemical formulas

  24. Writing Chemical Formulas Does not contain covalent prefixes Does contain covalent prefixes = Binary Covalent compound Ends with “-ide” (except hydroxide & cyanide) = Binary Ionic All others = Polyatomic Ionic Nomenclature Summary

  25. Mixed Practice Magnesium hydroxide Copper (II) nitrate Iron (III) oxide Nitrogen dioxide Sodium bicarbonate Example: Write the following chemical formulas

  26. Mixed Practice Magnesium hydroxide Copper (II) nitrate Iron (III) oxide Nitrogen dioxide Sodium bicarbonate Mg(OH)2 Cu(NO3)2 Fe2O3 NO2 NaHCO3 Example: Write the following chemical formulas

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