Presentation on theme: "Acids and Bases in the Home"— Presentation transcript:
1Acids and Bases in the Home Chapter 6.4Acids and Bases in the Home
2SOAP 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!
3SoapThe 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!
4What 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.
5Detergents 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!!!!
6Soaps 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
7Ammonia solution NH3 + H2O NH4 + OH solution of ammonia gas, water, ammonium ions, hydroxide ions.hydroxide ions mix with greaseforms an emulsion.NH3 + H2O NH4 + OH
8Disinfectants kill bacteria. Bleach is a disinfectant.Bleach also removes color from clothing.
9Antacidsweak bases to neutralize excess stomach acid.