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Naming Compounds Return to TOC Chapter 4 Nomenclature How to name compounds from formula or give the formula for named compounds Copyright © Cengage Learning.

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Presentation on theme: "Naming Compounds Return to TOC Chapter 4 Nomenclature How to name compounds from formula or give the formula for named compounds Copyright © Cengage Learning."— Presentation transcript:

1 Naming Compounds Return to TOC Chapter 4 Nomenclature How to name compounds from formula or give the formula for named compounds Copyright © Cengage Learning. All rights reserved 1

2 Naming Compounds Return to TOC 2 -Naming Binary Compounds the contain a Metal and a Nonmetal (Types I and II) -Naming Binary Compounds that contain only Nonmetals (Type III) -Review Naming Binary Compounds -Naming Compounds that contain Polyatomic Ions -Naming Acids -Writing Formulas from Names

3 Naming Compounds Return to TOC 3 Binary Compounds  Composed of two elements Binary Ionic Compounds  Metal—nonmetal Binary Covalent Compounds  Nonmetal—nonmetal

4 Naming Compounds Return to TOC 4 Binary ionic compounds contain positive cations and negative anions.  Type I compounds Metal present forms only one cation.  Type II compounds Metal present can form 2 or more cations with different charges.

5 Naming Compounds Return to TOC 5 1.The cation is always named first and the anion second. 2.A simple cation takes its name from the name of the element. 3.A simple anion is named by taking the first part of the element name (the root) and adding –ide. Rules for Naming Type I Ionic Compounds

6 Naming Compounds Return to TOC 6 Metals (Groups I, II, and III) and Non-Metals Metal _________ + Non-Metal _________ideSodium Chlorine Sodium Chloride NaCl Type I Compounds

7 Naming Compounds Return to TOC 7 Common Simple Cations and Anions

8 Naming Compounds Return to TOC 8 Examples: KClPotassium chloride MgBr 2 Magnesium bromide CaOCalcium oxide Binary Ionic Compounds (Type I)

9 Naming Compounds Return to TOC 9 Exercise What is the name of the compound SrBr 2 ? a)strontium bromine b)sulfur bromide c)strontium dibromide d)strontium bromide

10 Naming Compounds Return to TOC Binary Ionic Compounds Type II 10

11 Naming Compounds Return to TOC 11 Binary Ionic Compounds (Type II) Metals in these compounds can form more than one type of positive charge. Charge on the metal ion must be specified. Roman numeral indicates the charge of the metal cation. Transition metal cations usually require a Roman numeral.

12 Naming Compounds Return to TOC 12 Metals (usually Transition Metals) and Non-Metals Metal ______ +Roman Numeral (__) + Non-Metal ________ide Iron III Bromine Iron ( III ) Bromide FeBr 3 Compare with: Iron ( II ) Bromide FeBr 2 Metals (Transition Metals) and Non-Metals the Older System Metal (Latin) _______ + ous or ic + Non-Metal ________ide Ferrous Bromine Ferrous Bromide FeBr 2 Compare with Ferric Bromide FeBr 3 Type II Compounds

13 Naming Compounds Return to TOC 13 Common Type II Cations

14 Naming Compounds Return to TOC 14 1.The cation is always named first and the anion second. 2.Because the cation can assume more than one charge, the charge is specified by a Roman numeral in parentheses. Rules for Naming Type II Ionic Compounds

15 Naming Compounds Return to TOC 15 Examples: CuBrCopper(I) bromide FeSIron(II) sulfide PbO 2 Lead(IV) oxide Binary Ionic Compounds (Type II)

16 Naming Compounds Return to TOC 16 Exercise What is the name of the compound CrO 2 ? a)chromium oxide b)chromium(II) oxide c)chromium(IV) oxide d)chromium dioxide

17 Naming Compounds Return to TOC 17 Exercise What is the correct name of the compound that results from the most stable ion for sulfur and the metal ion that contains 24 electrons? a)iron(III) sulfide b)chromium(II) sulfide c)nickel(III) sulfate d)iron(II) sulfate

18 Naming Compounds Return to TOC 18 Formed between two nonmetals. 1.The first element in the formula is named first, and the full element name is used. 2.The second element is named as though it were an anion. 3.Prefixes are used to denote the numbers of atoms present. 4.The prefix mono- is never used for naming the first element. Rules for Naming Type III Binary Compounds Binary Compounds Type III

19 Naming Compounds Return to TOC 19 Type III Compounds Non-Metals and Non-Metals Use Prefixes such as mono, di, tri, tetra, penta, hexa, hepta, etc. CO 2 Carbon dioxide CO Carbon monoxide PCl 3 Phosphorus trichloride CCl 4 Carbon tetrachloride N 2 O 5 Dinitrogen pentoxide CS 2 Carbon disulfide

20 Naming Compounds Return to TOC 20 Prefixes Used to Indicate Numbers in Chemical Names 9nona- 10deca- 11undeca- 12dodeca- 13trideca- 14tetradeca- 15pentadeca- 16hexadeca- 17heptadeca- 18octadeca- 19nonadeca- 20icosa Additional Prefixes

21 Naming Compounds Return to TOC 21 Examples: CO 2 Carbon dioxide SF 6 Sulfur hexafluoride N 2 O 4 Dinitrogen tetroxide Binary Covalent Compounds (Type III)

22 Naming Compounds Return to TOC 22 Exercise What is the name of the compound SeO 2 ? a)selenium oxide b)selenium dioxide c)selenium(II) oxide d)selenium(IV) dioxide

23 Naming Compounds Return to TOC 23 Flow Chart for Naming Binary Compounds

24 Naming Compounds Return to TOC 24 Let’s Practice! Name the following. CaF 2 K2SK2S CoI 2 SnF 2 SnF 4 OF 2 CuI 2 CuI SO 2 SrS LiBr Strontium Sulfide Lithium Bromide Copper ( I ) Iodide or Cuprous Iodide Sulfur dioxide Copper ( II ) Iodide or Cupric Iodide Oxygen diflouride Tin ( IV ) Fluoride or Stannic Fluoride Tin ( II ) Fluoride or Stannous Fluoride Cobalt ( II ) Iodide or Cobaltous Iodide Potassium Sulfide Calcium Flouride

25 Naming Compounds Return to TOC 25 Polyatomic ions are charged entities composed of several atoms bound together. They have special names and must be memorized.

26 Naming Compounds Return to TOC 26 Names of Common Polyatomic Ions (page 100)

27 Naming Compounds Return to TOC 27 Naming ionic compounds containing polyatomic ions follows rules similar to those for binary compounds.  Ammonium acetate

28 Naming Compounds Return to TOC 28 NaOHSodium hydroxide Mg(NO 3 ) 2 Magnesium nitrate (NH 4 ) 2 SO 4 Ammonium sulfate FePO 4 Iron(III) phosphate Examples

29 Naming Compounds Return to TOC 29 Overall Strategy for Naming Chemical Compounds

30 Naming Compounds Return to TOC 30 Exercise What is the name of the compound KClO 3 ? a)potassium chlorite b)potassium chlorate c)potassium perchlorate d)potassium carbonate

31 Naming Compounds Return to TOC 31 Exercise Examine the following table of formulas and names. Which of the compounds are named correctly? a)I, II b)I, III, IV c)I, IV d)I only FormulaName IP2O5P2O5 Diphosphorus pentoxide IIClO 2 Chlorine oxide IIIPbI 4 Lead iodide IVCuSO 4 Copper(I) sulfate

32 Naming Compounds Return to TOC 32 Acids can be recognized by the hydrogen that appears first in the formula—HCl. These are molecules with one or more H + ions attached to an anion. Acids

33 Naming Compounds Return to TOC 33 If the anion does not contain oxygen, the acid is named with the prefix hydro– and the suffix –ic attached to the root name for the element. Examples: HClHydrochloric acid HCNHydrocyanic acid H 2 SHydrosulfuric acid Rules for Naming Acids

34 Naming Compounds Return to TOC 34 Acids That Do Not Contain Oxygen

35 Naming Compounds Return to TOC 35 If the anion contains oxygen:  The suffix –ic is added to the root name if the anion name ends in –ate. Examples: HNO 3 Nitric acid H 2 SO 4 Sulfuric acid HC 2 H 3 O 2 Acetic acid Rules for Naming Acids

36 Naming Compounds Return to TOC 36 If the anion contains oxygen:  The suffix –ous is added to the root name if the anion name ends in –ite. Examples: HNO 2 Nitrous acid H 2 SO 3 Sulfurous acid HClO 2 Chlorous acid Rules for Naming Acids

37 Naming Compounds Return to TOC 37 Some Oxygen-Containing Acids

38 Naming Compounds Return to TOC 38 Flowchart for Naming Acids

39 Naming Compounds Return to TOC 39 Exercise Which of the following compounds is named incorrectly? a) KNO 3 potassium nitrate b) TiO 2 titanium(II) oxide c) Sn(OH) 4 tin(IV) hydroxide d) PBr 5 phosphorus pentabromide e) H 2 SO 3 sulfurous acid

40 Naming Compounds Return to TOC 40 Sodium hydroxide  NaOH Potassium carbonate  K 2 CO 3 Sulfuric acid  H 2 SO 4 Dinitrogen pentoxide  N 2 O 5 Cobalt(III) nitrate  Co(NO 3 ) 3 Examples

41 Naming Compounds Return to TOC 41 Exercise A compound has the formula XCl 3 where X could represent a metal or nonmetal. What could the name of this compound be? a)phosphorus trichloride b)carbon monochloride c)tin(IV) chloride d)magnesium chloride

42 Naming Compounds Return to TOC 42 Lets Practice Some More! HF Na 2 CO 3 H 2 CO 3 KMnO 4 HClO 4 H2SH2S NaOH CuSO 4 PbCrO 4 H2OH2O NH 3 Hydrooxic acid (haha, no……just water) Ammonia Copper ( II ) sulfate or Cupric sulfate Lead ( II ) chromate or Plubous chromate Sodium hydroxide Hyrdogen sulfuric acid Perchloric acid Potassium permanganate Sodium carbonate Hydroflouric acid Carbonic acid


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