- Contact the Elderly. If you know anyone who is interested in joining a group aged 75 and above who live alone without the support of family and friends, you can get them involved with Contact the Elderly by calling 0800 716 543. Image Credit: Casserole Club, When They Get Older, Contact the Elderly.
Classic soap is a mixture of sodium (solid soap bars) or potassium (liquid hand soap) salts of fatty acids, produced by saponification of animal fat (tallow) or vegetable oil. Today, many additional compounds are usually added -- antiseptics, moisturizers, etc, but the base is the same.
This is called alkaline hydrolysis of esters. Since this reaction leads to the formation of soap, it is called the Saponification process. The soap molecule has two parts: a polar group (-COO-Na +) and a non-polar group (R-hydrocarbon part). The polar group is called the head and the non-polar group is called the tail.