Reactivity series of Metals and Displacement reactions

• What is the main topic of today's video?

  The reactivity series of metals and their reactions with acids and water
• What do metals have in common regarding their electron arrangement?

  They have electrons in the outermost shell that they want to get rid of
• What does the reactivity of a metal refer to?

  How easily it forms positive ions
• Which group of metals is the most reactive?

  Group 1 metals
• Why are carbon and hydrogen included in the reactivity series?

  As references to compare the metals against
• How do we determine the reactivity of metals?

  By reacting them with acids or water and comparing the speed or violence of the reactions
• What is produced when a metal reacts with an acid?

  A salt and hydrogen gas
• What would happen if potassium reacts with hydrochloric acid?

  It would form potassium chloride and hydrogen, reacting explosively
• How does the violence of reactions change down the reactivity series?

  The reactions become gradually less violent
• What happens when magnesium reacts with an acid?

  It produces lots of bubbles as the solid metal disappears
• What is the relationship between reactivity and heat produced in reactions?

  The most reactive metals produce the most heat
• What must be ensured for a fair test when comparing metals' reactivity?

  Each metal sample must have the same mass and surface area, and the same type and concentration of acid must be used
• What do metals form when they react with water?

  Metal hydroxides and hydrogen
• Which metals do not react with water?

  Zinc, iron, and copper
• What happens when magnesium is placed in a solution of iron sulfate?

  Magnesium displaces iron to form magnesium sulfate and iron
• What occurs when copper is added to a solution of iron sulfate?


  Nothing happens because copper is less reactive than iron
• What is the reactivity series of metals?

  • An arrangement of metals based on their reactivity
  • Most reactive: Group 1 metals
  • Less reactive: Group 2 metals
  • Least reactive: Transition metals
  • Includes carbon and hydrogen for comparison
• What are the key points to remember about displacement reactions?

  • More reactive metals can displace less reactive ones
  • Example: Magnesium displaces iron in iron sulfate
  • Example: Copper cannot displace iron in iron sulfate