Describing Acids and Bases

House hold products
 
 
acids bases
 
Properties

Acids

Bases Acids and Bases in Solution
 
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


 

Litmus Paper