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    • Metals have these typical properties:
      • Lustrous (shiny)
      • High melting and boiling points
    • Halide ions
      • Silver chloride is a white precipiitate.
      • Barium chloride+sodium sulfate--> sodium chloride+solid barium
  • High Density (are heavy for their size)
    • Metals have these typical properties:
      • Lustrous (shiny)
      • High melting and boiling points
  • High tensile strength  (resist being stretched)
    • Good conductors of heat and electrictiy
      • Water  Pollutants
        • Nitrate fertillisers are very soluble in water .
          • They are easily washed off fields by the rain, into rivers and reservoirs.
        • Sedimentation:  added to clump big particles together.
        • science
          • Halide ions
            • Silver chloride is a white precipiitate.
            • Barium chloride+sodium sulfate--> sodium chloride+solid barium
      • Pesticides  used by farmers to kill weeds or insects .
        • Water  Pollutants
          • Nitrate fertillisers are very soluble in water .
            • They are easily washed off fields by the rain, into rivers and reservoirs.
          • Sedimentation:  added to clump big particles together.
      • Filteration: water is sprayed onto layers of sand and gravel.
        • Chlorination: Chlorine gas,  put into water and kills microbes.
          • Silver bromide is a cream precipitate.
            • Silver iodine is a pale yellow precipitate.
              • Silver nitrate+sodium bromide--> sodium nitrate+solid silver bromide

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