House hold products
 
 

acids	bases

 
Properties

Acids

• taste sour
• react with metals and carbonate
• destroy the chemical properties of bases (creating salt and water)

• taste bitter
• feel slippery
• destroy thechemical properties of acids (creating salt and water)

Acids  has an excess of H+ ions	Bases  excess of OH- ions another name - Alkali

pH Scale
 
 

roughly measures the acidity of a solution. "p" potenz (potential) "H" - Hydrogen pH of distilled water is 7 - neutral below 7 - acid - your stomach contains HCl pH2 above 7 - alkali or base - your small intestines is pH 9

 
 

samples of solution  the more acid it is the lower the pH

What is with the numbers?

http://www.purchon.com/chemistry/ph.htm
interactive showing how acid has a lower pH number and base has a higher pH number.

Indicators
special type of compound

• changes color as the pH of a solution changes
• thus telling us the pH of the solution

Litmus Paper