Metals

• Metals are usually on the left hand side of the periodic table, as elements on this side usually lose electrons, which explains why they are surrounded by a sea of electrons
• • The strong attraction between delocalized electrons and positive ions causes the strong metallic bonding
  • This causes them to have high melting and boiling points, which need a lot of energy to break apart
• • Metals have high tensile strength, they're strong and hard to break
  • But they can also be hammered into different shapes (malleable)
• Metals are good conductors of heat and electricity, entirely because of the sea of delocalized electrons moving through the metal, which carry an electric charge
• Delocalized electrons are free to move when a potential difference is applied ( circuit ) leading to electrical conductivity
• To test if a substance is a metal, you can use a universal indicator