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Naming Covalent Compounds

Naming Covalent Compounds. Chapter 19. Naming of Covalent Compounds. Why do we care? Scientists must all use the same system so that we can communicate Helps you to understand the news and packaging of foods. Naming Covalent Compounds.

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Naming Covalent Compounds

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  1. Naming Covalent Compounds Chapter 19

  2. Naming of Covalent Compounds • Why do we care? • Scientists must all use the same system so that we can communicate • Helps you to understand the news and packaging of foods

  3. Naming Covalent Compounds • Name 1st element in the compound & add a prefix to indicate how many are present. • Name 2nd element by using the root of the element & adding the suffix –ide. • Then add a prefix to indicate how many are present. • When the name of the element begins with “a” or “o” and the prefix ends in “a” or “o”, drop the vowel at the end of the prefix. (For example monoxide, not monooxide.) • Diatomic elements are just named using the element name, • O2 is just oxygen

  4. Diatomics • http://www.unis.org/UNIScienceNet/MOLEC_knowledge.html

  5. Prefixes • Mono-1 • Di-2 • Tri-3 • Tetra- 4 • Penta- 5 • Hexa- 6 • Hepta- 7 • Octa- 8 • Nona- 9 • Deca- 10

  6. Examples of Covalent Naming • SO3 • Sulfur Trioxide • CO • Carbon Monoxide • PCl5 • Phosphorous Pentachloride • SF6 • Sulfur hexafluoride

  7. Writing Covalent Formulas • The prefixes tell you the subscript of each element within the formula • Dihydrogen monoxide: H2O

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