C5- Chemicals of the Natural Environment

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1. After adding sodiu, hydroxide, what is observed?

  • the reactivity of the precipitate.
  • the colour of the precipitate.
  • the melting point of the precipitate.
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2. Aluminium- Name a property and a use of the metal aluminium.

  • High melting point- used for drinks cans.
  • Malleable-used for drinks cans.
  • Strong-used for drinks cans.

3. Many ionic compounds dissolve in water because...

  • water molecules are polar. (Have a positive end and a negative end)
  • water molecules are negative.
  • water molecules are positive.

4. Copper- Name a property and a use of the metal copper.

  • Conductor of electricity- used for cables and electrical switches.
  • Malleable-used for cables and electrical switches.
  • High melting point-used for cables and electrical switches.

5. What are Ores?

  • Metals.
  • Ores are rocks that contain varying amounts of minerals from which metals can be extracted.
  • Non-metals.
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zo26blue

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This is brilliant, thank you. Has made me more confident for the exam today. Worded brilliantly and encouraged me to think properly! Excellent resource for my revision.

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