displacement reactions

• What happens when an iron nail is placed in copper sulfate?

  The nail turns orange and copper sulfate changes color
• What is the chemical reaction when iron is placed in copper sulfate?

  Iron plus copper sulfate produces copper plus iron sulfate
• Why does the iron nail turn orange in copper sulfate?

  It gets covered in copper from the reaction
• What is a displacement reaction?

  A reaction where one metal displaces another
• What is the general equation for a displacement reaction involving iron and copper sulfate?

  Iron plus copper sulfate goes to iron sulfate plus copper
• What determines if a displacement reaction will occur?

  The reactivity of the metals involved
• Will magnesium react with copper sulfate, and why?

  Yes, because magnesium is more reactive
• Will zinc react with calcium sulfate, and why?

  No, because zinc is less reactive than calcium
• What group do halogens belong to in the periodic table?

  Group seven
• How can halogens participate in displacement reactions?

  A more reactive halogen can displace a less reactive one
• What is the result of chlorine reacting with sodium bromide?

  Sodium chloride plus bromine is produced
• What happens to a metal atom during oxidation?

  It loses one or more electrons
• What is reduction in terms of electron transfer?

  Gain of electrons by a metal ion
• What does the acronym "oil rig" stand for in chemistry?

  Oxidation is loss, reduction is gain
• In a displacement reaction, what happens to the metals involved?

  One metal is oxidized and the other is reduced
• What are half equations used for in redox reactions?

  To show electron transfer for atoms and ions
• What is the half equation for copper ions being reduced?

  Cu²⁺ + 2 electrons becomes Cu
• What is the half equation for iron atoms being oxidized?

  Fe - 2 electrons becomes Fe²⁺
• What are the key components of a displacement reaction?

  • One metal displaces another
  • Reactivity determines if a reaction occurs
  • Can involve halogens displacing each other
• What is the relationship between oxidation and reduction in redox reactions?

  • Oxidation: loss of electrons
  • Reduction: gain of electrons
  • Both occur simultaneously in displacement reactions
• What are the advantages of using carbon in a blast furnace?

  • Cost-effective
  • Readily available
  • Efficient in displacing iron from iron oxide
• What is the role of hydrogen in the reactivity series?

  Sometimes behaves like a metal
• What is the significance of carbon's position in the reactivity series?

  It can displace iron from iron oxide
• What could be used instead of carbon to displace iron?

  Aluminium or magnesium could be used
• Why is carbon preferred over aluminium or magnesium in a blast furnace?

  Carbon is more cost-effective and efficient