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REVIEW FORTEST NAMING COMPOUNDS WRITING FORMULAS EMPIRICAL FORMULA COEFFICIENTS REVIEW FROM PREVIOUS CHAPTERS.

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Presentation on theme: "REVIEW FORTEST NAMING COMPOUNDS WRITING FORMULAS EMPIRICAL FORMULA COEFFICIENTS REVIEW FROM PREVIOUS CHAPTERS."— Presentation transcript:

1 REVIEW FORTEST NAMING COMPOUNDS WRITING FORMULAS EMPIRICAL FORMULA COEFFICIENTS REVIEW FROM PREVIOUS CHAPTERS

2 Naming Compounds ionic cation (?) anion Use Roman Numeral if more than one possible charge. ex: sodium chloride iron (III) oxide covalent ?element ?ele(ment)ide prefixes are used to specify how many of each type of element ex: carbon dioxide organic ?ane, ?ene, ?yne, ?ol,… Use prefixes to tell how many carbons ending tells what type of compound we have. Methane What are the types of naming systems we have talked about?

3 Naming Compounds ionic cation (?) anion Use Roman Numeral if more than one possible charge. ex: sodium chloride iron (III) oxide covalent ?element ?ele(ment)ide prefixes are used to specify how many of each type of element ex: carbon dioxide organic ?ane, ?ene, ?yne, ?ol,… Use prefixes to tell how many carbons ending tells what type of compound we have. Methane What are the types of naming systems we have talked about? Compounds are ionic if: a)they consist of ions b) they have a metal as the first element. Example: a)NaCl consists of Na + and Cl 1- b)NH 4 Br consists of NH 4 + and Br 1-

4 Naming Compounds ionic cation (?) anion Use Roman Numeral if more than one possible charge. ex: sodium chloride iron (III) oxide covalent ?element ?ele(ment)ide prefixes are used to specify how many of each type of element ex: carbon dioxide organic ?ane, ?ene, ?yne, ?ol,… Use prefixes to tell how many carbons ending tells what type of compound we have. Methane What are the types of naming systems we have talked about? Compounds are covalent if: 1.both elements are nonmetals Examples 1.CO carbon monoxide 2.N 2 O dinitrogen monoxide 3.N 2 O 4 dinitrogen tetroxide

5 Naming Compounds ionic cation (?) anion Use Roman Numeral if more than one possible charge. ex: sodium chloride iron (III) oxide covalent ?element ?ele(ment)ide prefixes are used to specify how many of each type of element ex: carbon dioxide organic ?ane, ?ene, ?yne, ?ol,… Use prefixes to tell how many carbons ending tells what type of compound we have. Methane What are the types of naming systems we have talked about? Compounds are organic if: 1.carbon and hydrogen are the main elements Examples 1.CH 4 methane 2.C 2 H 4 ethene 3.C 2 H 4 OH ethanol

6 What are the parts of a chemical formula? Compounds ions (or elements sharing electrons) Elements Ionic compounds are made of ions held together by electrostatic interactions. Covalent compounds are made of atoms that share electrons. Ions are formed when elements gain or lose electrons, to obtain a charge. Electrons fill up lowest energy orbitals first, and seek to maintain the lowest possible energy state. 1s 2 2s 2 …. The charge on an ion = the number of electrons it has gained or lost. The charge = the oxidation state.

7 What are the parts of a chemical formula? Compounds ions (or elements sharing electrons) Elements PO 4 3- Cu 2+ 32 ( ) For copper (II) phosphate, you need 3 copper (II) ions and 2 phosphate ions. Copper (II) phosphate has 3 copper atoms, 2 phosphorous atoms and 8 oxygen atoms

8 Vocabulary Binary compound covalent element ionic metal metalloid nonmetal organic alkanes alkenes alkynes functional group molecule coefficient formula unit oxidation number isotope electron configuration

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