1 Consider the first atom of each part of the molecule. An atom with higher atomic number has higher priority. (e.g. I > Cl > C > H)  If the first atom of two groups is the same, consider the second atom(s) in the same way as the first. (e.g. -C(CH3)3 > -CH(CH3)2 > -CH2CH3 > -CH3).
1 You can also use a toilet plunger on your bathroom sink. 2  Fill up the sink with water first, the use the plunger vigorously on the drain just as you would a toilet. 3  This will lift and agitate any blockage in the drain. It will smell a bit like vinegar for about a day. 2  You can also use a toilet plunger on your bathroom sink. 3  Fill up the sink with water first, the use the plunger vigorously on the drain just as you would a toilet.
I know I did, and after a bit of research, I'm glad that I use sulfate free shampoo. Sodium Lauryl Sulfate (SLS) is a relatively inexpensive, yet rather powerful, grease cutting detergent that also aids in the foaming nature of soap. It's been used in all kinds of soap products from your shampoo and facial cleansers to heavy degreasing agents used on mechanic's shop floors.