number eight identify each functional group and determine if its primary secondary or tertiary so let's start with number one this is an alcohol and what type of alcohol are we dealing with is it primary secondary or is it a tertiary alcohol for alcohols it depends on which carbon the oh group is bonded to so the hydroxyl group is bought into this carbon atom what kind of carbon atom is this primary secondary or tertiary well this carbon is attached to one other carbon atom so that is a primary carbon atom which makes this a primary alcohol what about number three this too is an alcohol the type of alcohol depends on the carbon atom on which the oh is bonded to so this carbon atom is attached to three other carbon atoms which makes it tertiary so this is a tertiary alcohol now what functional group is represented by number two chlorine is a halogen when you have a halogen attached to an alkane it's called an alkyl halide now is this a primary secondary or tertiary aquah halide well this too depends on the carbon in which the halogen is bonded to so this carbon atom is attached to two other carbon atoms which means that what we have here is a secondary I'll kill halide now for those of you who are interested in getting the full video with all 90 practice problems feel free to check the description section below this video now let's focus on this one this is another alkyl halide more specifically it's a benzilla kalide because the iodine atom is on the benzylic carbon one carbon away from the Benzene carbon is known as the basilic position now the type of alkyl halide that we're dealing with depends on the carbon in which the iodine is bonded to that carbon is attached to three other carbon atoms so this is a tertiary benzylic halide everything else you can tell they're a means so let's look at compound number four what kind of a mean are we dealing with this is a primary Amine now what about number five what would you say is it primary secondary or tertiary if we focus on the carbon atom here this carbon is primary this carbon here is secondary however we don't have a secondary amine we have a primary Amine now you might be wondering why is this considered a primary amine and not a secondary Amine for a means the rules are different for alcohols and alkyl halides it all depends on the carbon in which the halogen or the hydroxyl group is attached to that determines if you have a primary alcohol or secondary alkyl halide for it means the rules are different you don't look at the carbon atom you look at the nitrogen atom so if we focus on the nitrogen atom here how many carbon atoms are attached to the nitrogen atom the answer is only one that's why this is a primary amine and not a secondary amine because the focus is on the nitrogen atom and not the carbon atom so look at that number six this nitrogen is attached to two carbon atoms so that makes this a secondary I mean now if you were to focus on the carbon atoms notice that this carbon is a secondary carbon and this carbon is a primary carbon what would you say would you say this is a primary mean or a secondary Amine for that matter I mean for that reason we shouldn't really focus on the carbon atom because nitrogen can bond to multiple carbon atoms it doesn't make sense to define the type of amine that you have based on the carbon atoms because it's just not going to work here now looking at the next one this nitrogen is attached to three carbon atoms so that makes this a tertiary I mean for the last one the nh2 group is only attached to one carbon even though that carbon may be tertiary because it's attached to one carbon atom we have a primary Amine so now you know how to determine if an alcohol alkyl halide or an amine if it's primary secondary or tertiary