acids and alkali reactions

• hydrochloric acid

  HCI forms H+ and Cl- ions
• Sulphuric acid

  H2SO4 forms H+ and SO4- ions
• Nitric acid

  HNO3 forms H+ and NO3- ions
• alkali


  a soluble base
• a salt

  a compound formed when some or all of the hydrogen from an acid is replaced by a metal
• metal + acid

  salt + hydrogen gas
• metal hydroxide + acid

  salt + water
• a concentrated acid 


  acid with lots of acid particles in the water
• a strong acid

  an acid which completely splits up into its ions in water
• metal carbonate + acid


  salt + water + carbon dioxide