Chemistry

• Acid turns litmus from blue to red
• Bases turn litmus from red to blue
• Examples of acids:


  Sour milk, hydrochloric in stomach, Vitamin C, Ant stings
• Examples of Bases


  sodium hydroxide (drain cleaner), bath salts, toothpaste
• An Indicator is


  a compound that shows by means of a colour change whether a substance is acidic or basic
• The PH Scale tells us:


  how acidic or basic a substance is
• A solution whose pH is less then 7

  acidic
• A solution whose pH is greater then 7

  base or alkaline
• A solution whose pH is 7

  neutral
• pH can be measured with a pH sensor or universal indicator
• An alkali is a base that is soluble in water