The Reactivity Series & Displacement Reactions

• What is the focus of today's video?

  The reactivity series of metals
• What do we mean by the reactivity of a metal?

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

  Group 1 metals
• How do metals react with acids?

  They form a salt and hydrogen gas
• Why are carbon and hydrogen included in the reactivity series?

  As references to compare the metals against
• What happens when potassium reacts with hydrochloric acid?

  It forms potassium chloride and hydrogen
• How does the reactivity change down the series?

  Reactions become less violent
• What is the relationship between reactivity and heat produced?

  More reactive metals produce more heat
• What must be ensured for a fair test when comparing metals?

  Same mass and surface area of samples
• What do metals form when they react with water?

  Metal hydroxides and hydrogen
• What happens when magnesium is placed in iron sulfate solution?

  Magnesium displaces iron to form magnesium sulfate
• Which metals do not react with water?

  Zinc, iron, and copper
• What occurs when copper is added to iron sulfate solution?

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

  • Arrangement of metals by reactivity
  • Most reactive: Group 1 metals
  • Less reactive: Group 2 metals
  • Least reactive: Transition metals
• How do we determine the reactivity of metals?

  1. React metals with acids or water
  2. Observe reaction speed and violence
  3. Measure temperature change