Indicators

• acid - a substance that dissolves in water to produce Hydrogen (H+) ions

  location -2
• Base - a substance that dissolve in water to pro hydroxide (OH-) ions

  Location - 11
• pH scale - a measure of the acidity or basicity of a solution (scale from 0 to 14)
• Indicator - a substance the changes colour depending on wheather it is acidic or basic

  Location - 7
• Indicator - a substance that changes colour depending on whether it is an acid or base

  Location - 7
• pH paper - red paper that turns blue or blue paper that turns red
• Corrosive - to « eat their way through » clothing, dangerous to the skin, and able to attack stonework and metals
• Weak acid - produces fewer hydrogen ions
• Weak base - produces few hydroxide ions
• Strong acid - produces a lot of hydrogen ions
• Strong base -produces a lot of hydroxide ions
• Essentials knowledge summary acids

  
• The pH scale