<p>0c9282730ea80fe831cdaef1872dec31.doc SCH4U – Organic Chemistry</p><p>Date: ______Alkanes</p><p>The most basic form of ______Only ______and ______Used to form more complex organic molecules No points of ______Maximum number of hydrogens per carbon Contain only ______</p><p>Naming Alkanes Use IUPAC System ______Find the longest continuous chain of ______atoms and use that as the base name All end with “______” Base Names</p><p>CH4 ______C6H14 ______</p><p>C2H6 ______C7H16 ______</p><p>C3H8 ______C8H18 ______</p><p>C4H10 ______C9H20 ______</p><p>C5H12 ______C10H22 ______Drawing Hydrocarbons We don’t want to have to draw out everything in full We want to take shortcuts We create ______We group hydrogens to the ______atoms</p><p>Page 1 of 4 0c9282730ea80fe831cdaef1872dec31.doc SCH4U – Organic Chemistry</p><p>We also have ______A line is assumed to have a ______at the end if no letter is placed at the end of the line If not letters are present in a line, all junctions/corners are assumed to have ______Examples:</p><p>Isomers These are molecules with the same ______formula, but different ______formula</p><p>Both these molecules are C4H10</p><p>Draw the 5 isomers with 6 carbons</p><p>Page 2 of 4 0c9282730ea80fe831cdaef1872dec31.doc SCH4U – Organic Chemistry</p><p>Branched Hydrocarbons Sometimes there are branches off of the main hydrocarbon chain We need to name each chain separately</p><p>Start with the longest continuous chain of carbon Count the number of carbons in the branch Use commas to separate numbers Use dashes to separate numbers and words</p><p>Examples:</p><p>Start with the longest continuous chain of carbon Number the carbons so that the branching gets the lowest numbers possible</p><p>If there are multiple branches, name them alphabetically If there are more than one of a given branch, you can use your prefixes to tell us how many</p><p>Page 3 of 4 0c9282730ea80fe831cdaef1872dec31.doc SCH4U – Organic Chemistry</p><p>Cyclic Hydrocarbons Sometimes the longer chains can form ring structures We call this group of alkanes ______</p><p>To name this structure, count the number of carbons like before We use the prefix “______” to tell us it is a cyclic hydrocarbon</p><p>Homework Page 15 Questions 1-2</p><p>Page 4 of 4</p>