Metals and non-metals

• What are elements that react to form positive ions called?

  metals
• What are elements that do not form positive ions are non-metals called?


  Non-metals
• Where are metals found on the periodic table?


  Metals are found on the left side of the periodic table.
• Where are nonmetals found on the periodic table?


  Right side
• Out of metals and non metals which loses electrons to form positive ions?

  Metals
• Out of metals and non metals which gain electrons to form negative ions?

  Nonmetals
• Which colour shows the non metals?


  Yellow

  
• Which colour shows metals?


  Red

  
• How does reactivity change for metals and non-metals in the periodic table?

  Metals: become more reactive as you move down a group

  Non-metals: become less reactive as you move down a group
• Why do metals become more reactive down the group?

  • Outer electron is further from the nucleus
  • This is easier to lose
  • More shielding between electrons and nucleus
  • Weaker attraction between outer electron and nucleus
• Why do non metals become less reactive as you move down the group?

  • Outer electrons are further from the nucleus
  • Harder to gain electrons
  • More shielding between the nucleus and outer electrons
  • Less attraction between nucleus and electron
• Physical properties of metals:


  • Shiny
  • Solid state
  • Conduct heat and electricity well
  • Malleable- can be shaped easily
• Chemical properties of metals:

  • Lose electrons and form positive ions
  • Metal oxides are basic
  • Metals can displace hydrogen from acids
• Physical properties of nonmetals:

  • Can be found in all three states, solid, liquid, gas
  • Dull in appearance- not shiny
  • Brittle when solid
  • Poor conductors of heat and electricity
  • Lower densities compared to metals
• Chemical properties of non metals:


  • Gain/share electrons during chemical reactions forming negative ions or covalent bonds
  • Can form acids when combined with hydrogen
  • Non-metal oxides are usually acidic or neutral
  • Can react with oxygen to produce energy