pH scale

• What are Arrhenius acids?

  Have a high concentration of H ions in solution.
• What are hydronium ions?

  In solution, the hydrogen ion combines with a water molecule to form H30 +.
• What is an Arrhenius base?

  Bases produce a high concentration of OH ions in solution.
• What is concentration?

  The measure of the number of molecules per unit volume.
• What is acid strength?

  A measure of how much the substance ionises in solution. Strong acids fully ionise, weak acids only partially ionise.
• Where are acids and bases on pH scale.

  Acids are lower, bases are higher.