4.1.1 The reactivity series

• The reactivity series is based on a metal's tendency to lose electrons
• Metals lower in the reactivity series are more reactive than those higher in the series

  False
• The reactivity series is experimentally determined by observing displacement reactions.
• How does potassium react with acids?

  Vigorously
• Arrange the following metals in order of decreasing reactivity based on their reactions with acids and salts:

  1️⃣ Potassium (K)

  2️⃣ Sodium (Na)

  3️⃣ Calcium (Ca)

  4️⃣ Magnesium (Mg)

  5️⃣ Zinc (Zn)

  6️⃣ Iron (Fe)
• Hydrogen is included in the reactivity series to determine if a metal can displace it from acids
• Match the metal with its reaction behavior:

  Potassium (K) ↔️ Reacts violently with water

  Copper (Cu) ↔️ No reaction with water

  Iron (Fe) ↔️ Reacts slowly with acids

  Magnesium (Mg) ↔️ Reacts with hot water
• What happens to reactivity as you move down the reactivity series?

  It decreases
• What type of reaction does iron have with acids?

  No reaction
• Potassium is an example of a highly reactive metal
• Zinc can displace copper from copper sulfate solution because it is more reactive.


  True
• Match each metal with its reactivity level:

  Potassium (K) ↔️ Very reactive

  Zinc (Zn) ↔️ Moderately reactive

  Copper (Cu) ↔️ Less reactive

  Gold (Au) ↔️ Very less reactive
• The most reactive metal in the reactivity series is potassium
• In displacement reactions, a more reactive metal displaces a less reactive metal from its salt
• The reactivity series is experimentally determined by observing how metals react with water, acids, and metal salts through displacement reactions
• In the reactivity series, reactivity decreases down the series
• Which metal loses electrons most easily in the reactivity series?

  Potassium (K)
• What is the balanced chemical equation for the reaction between iron and copper sulfate?

  Fe(s) + CuSO4(aq) \rightarrow FeSO4(aq) + Cu(s)</latex>
• A more reactive metal can displace a less reactive metal from its compounds.


  True
• Which metal is an example of a less reactive metal?

  Gold
• The reactivity series helps predict the chemical behavior of metals


  True
• Metals above hydrogen in the reactivity series react with acids to produce hydrogen gas


  True
• Aluminum reacts with acids only after removing its oxide layer
• What is the trend in reactivity as you move down the reactivity series?

  Decreases
• What determines a metal's position in the reactivity series?

  Ability to lose electrons
• Iron is more reactive than zinc.

  False
• Arrange the following reactions in order of increasing reactivity of metals:

  1️⃣ Reaction with water

  2️⃣ Reaction with acids

  3️⃣ Displacement reactions
• Copper reacts readily with acids to produce hydrogen gas.

  False
• The vigor of reactions helps establish the order of metal reactivity in the series.


  True
• The reactivity series is used in batteries for power generation.

  True
• Which process uses the reactivity series to reduce metal ore into pure metal?

  Extraction
• Why are metals at the top of the reactivity series more reactive?

  They lose electrons easily
• The reactivity series is based on the tendency of metals to lose electrons
• Arrange the following metals in the reactivity series from most reactive to least reactive:

  1️⃣ Potassium (K)

  2️⃣ Sodium (Na)

  3️⃣ Calcium (Ca)

  4️⃣ Magnesium (Mg)

  5️⃣ Aluminum (Al)

  6️⃣ Zinc (Zn)
• Why is hydrogen included in the reactivity series?

  To compare with metals
• Which metal reacts vigorously with cold water to form hydrogen gas and metal hydroxides?

  Potassium (K)
• Match the reaction type with its description:

  Reaction with Water ↔️ Forms hydrogen gas and metal hydroxides

  Reaction with Acids ↔️ Produces hydrogen gas and metal salts

  Displacement Reactions ↔️ More reactive metal displaces less reactive
• Arrange the following metals in order of decreasing reactivity:

  1️⃣ Potassium (K)

  2️⃣ Zinc (Zn)

  3️⃣ Copper (Cu)

  4️⃣ Gold (Au)
• Zinc can displace copper from copper sulfate solution.

  True
• A more reactive metal can displace a less reactive metal from its compounds