Acids & Alkalis

• Acid


  Substance producing more hydrogen ions than hydroxide ions when dissolved in water
• Acidic


  Having a pH lower than 7
• Solution


  Mixture formed by a solute and a solvent
• Ion


  Electrically charged particle, formed when an atom or molecule gains or loses electrons
• Acidic solution


  Has pH values less than 7
• Alkali


  Substance producing more hydroxide ions than hydrogen ions when dissolved in water
• Alkaline


  Having a pH greater than 7
• Alkaline solution


  Has pH values greater than 7
• Neutral solution


  Neither acidic nor alkaline, has a pH of 7
• Universal indicator


  A chemical solution that produces many different colour changes corresponding to different pH levels
• Indicator


  A substance that has different colours, depending upon the pH of the solution it is in
• Litmus paper


  A type of indicator that can be red or blue. Red litmus turns blue in alkalis, while blue litmus turns red in acids