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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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