tests

• Oxidation


  Gaining of electrons
• Reduction


  Loss of electrons
• Redox reaction involves both oxidation and reduction
• Magnesium loses electrons in an oxidation reaction
• Lead gains electrons in a reduction reaction
• Oxygen is gained in an oxidation reaction
• Magnesium loses electrons when it undergoes an oxidation reaction
• benedict test for glucose turns blue -> green -> yellow -> orange -> brick red
• Tests for gases


  • Ammonia (turns damp red litmus paper blue)
  • Carbon dioxide (turns limewater milky)
  • Oxygen (relights a glowing splint)
  • Hydrogen (squeaky pop with lighted splint)
• Flame tests for cations

  • Sodium (orange)
  • Potassium (violet)
  • Lithium (red/crimson)
  • Copper (green)
• iodine test for starch browny orange -> blue black
• biuret test for protein blue -> purple
• ethanol test for lipid clear -> cloudy