Presentation on theme: "Acids and Bases in the Home"— Presentation transcript:
1 Acids and Bases in the Home Chapter 6.4Acids and Bases in the Home
2 SOAP Dissolves in both grease and water. Soaps are emulsifiers Emulsion is a mixture of things that normally don’t mix.You need an emulsifer to help!
3 SoapThe nonpolar side of a soap molecule is “attached” (attracted to) nonpolar grease and oil, the polar side hangs on to the water, and the dirt slips off your hands and is pulled down the drain, trapped, along with the water molecules, by that pesky soap molecule!
4 What you don’t need to know about soap.... Lots of detail in top paragraph on pg 208, about the chemical reaction involved in making soap. Don’t worry about it.Just know that one end of the molecule is nonpolar and dissolves the grease or oil, and the other end is polar, and dissolves in water.
5 Detergents Soap doesn’t work well in “hard water” Hard water = water with lots of dissolved ions like Mg, Ca, and FeSoap + hard water = soap SCUM!!!!
6 Soaps vs Detergent – both have one polar and one nonpolar “end”, but... (soap has COO- or carboxylate group)derived from animal fatdetergent has SO3- group, known as sulfonate groupderived from petroleum