2. chemical properties Testing can be done by oil to boil with the NaOH solution alkaline compounds, such as the new type that was slippery as many bubbles when they spotted but were crushed (SOAP).
2. To test the chemical properties Can lead to fat, cooked with an alkaline solution such as NaOH to new compounds. Which looks like a slippery spots But there are many bubbles when crumbled (soap).
2. Testing chemistry. Can be done by the fat to a boil with alkaline solution, such as NaOH to compound new type, which has ลักษณะลื่น like alkaline, but many bubbles when squash. (soap).