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.
Build up usually occurs over time. Kitchen sinks clog because of grease, soap, and food. Bathroom sinks are usually clogged by hair, toothpaste, and toiletry items such as cotton balls, swabs, and facial scrub pads. To clear a minor sink clog, remove the sink strainer or drain plug.ill the sink halfway, then place the sink plunger over the drain and give it several forceful strokes before allowing the sink a chance to drain. If plunging doesn't work, remove the 'U'-shaped P-trap over a bucket, then clean the trap by hand.