Reactivity Series of Metals

Reactivity Series of Metals

• The reactivity series of metals is a chart that lists metals in order of their reactivity, with the most reactive metals at the top and the least reactive metals at the bottom.
• The series is useful for predicting how metals will react with other substances.

Metals in the Reactivity Series

• Potassium (K) is the most reactive metal in the series.
• The top 5 most reactive metals are: Potassium (K), Sodium (Na), Calcium (Ca), Magnesium (Mg), and Aluminium (Al).
• The middle of the series consists of: Zinc (Zn), Ferum (Fe), Tin (Sn), and Lead (Pb).
• The least reactive metals are: Copper (Cu), Mercury (Hg), Silver (Ag), and Gold (Au).

Predicting Metal Reactions

• A metal higher in the series will react with a solution of a metal lower in the series.

Amphibian Respiration

• Amphibians have three types of highly vascularized respiratory organs for gas exchange.
• The four types of respiratory organs found in amphibians are:
  • Gills
  • Lungs
  • Skin
  • Buccopharyngeal mucosa (the mouth and throat membrane)
• The blood of amphibians is rich in oxygen.
• Each of the respiratory organs has unique functions, including:
  • Gas exchange
  • Oxygen uptake
  • Carbon dioxide removal
  • Regulation of pH levels