Naming and Identifying Alkanes

This video tutorial teaches how to name branched chain alkanes using their structural formulas. It covers the basics of hydrocarbons and alkanes, introduces a four-step method for naming branched chain alkanes, and provides several examples to illustrate the process. The video concludes with a homework exercise to reinforce learning.

What is the general formula for alkanes?

• CN H2N-2

• CN H2N+2

• CN H2N

• CN H2N+1

What is the first step in naming branched chain alkanes?

• List side branches alphabetically

• Identify the longest carbon chain

• Identify the side branches

• Name the molecule

In the example of two-methylbutane, what is the main chain based on?

• Hexane

• Pentane

• Butane

• Propane

What is the name of a side group with the formula C2H5?

• Butyl

• Propyl

• Methyl

• Ethyl

How do you name a compound with two identical side groups?

• Use 'quad-' prefix

• Use 'bi-' prefix

• Use 'di-' prefix

• Use 'tri-' prefix

In the compound 2,4-dimethylhexane, what does '2,4' indicate?

• Number of carbon atoms

• Position of side branches

• Type of side branches

• Length of the main chain

What is the longest carbon chain in 3-ethylheptane?

• Five carbons

• Six carbons

• Seven carbons

• Eight carbons

Which side group is listed first in a compound's name?

• Propyl

• Ethyl

• Alphabetically first

• Methyl

What is the correct name for a compound with three methyl groups on carbons 2, 3, and 4 of a heptane chain?

• 2,3,4-trimethylpentane

• 2,3,4-trimethylbutane

• 2,3,4-trimethylhexane

• 2,3,4-trimethylheptane

What should you do if a compound has two different side groups?

• List them in order of size

• List them in alphabetical order

• List them in order of appearance

• List them in reverse alphabetical order