Why soap washes?
If people washed clothes without powder and washed without soap, they would always go dirty. Certainly, there are spots with which not each soap will cope. And here, for example, usual water you will not wash soot. Take soap in hand – and soot itself "will run away" into a sink. And a secret here not in wonderful aroma of forest herbs or loud advertizing. Look narrowly at soapsuds and properly think – what it? What it consists of how looks?
Any soapsuds consists of uncountable quantity of soap bubbles which cover is made of water. Parts of dirt, dust and soot stick to bubbles, and to wash away foam under a stream of water much more simply.
Similar process can be observed at the plant when ore is wanted to be separated from dead rock. For this purpose it is placed in soapsuds – ore will just roll in water. Bubbles lift up ore pieces therefore on a surface the crust is formed.
Thus, soap bubbles not only children entertain, but also wash dirt. The good fellow of people – even soap bubbles forced to work for himself.