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Describe a method that could be used to separate the components of the following a) Sand and iron filings b) Sawdust and lead pellets c) Salt and glass particles d) Silt (water and fine soil particles) e) Alcohol and water 2. Dissolve a tablespoon of sugar in a saucepan containing about 3 cm of water. Put at least 6 ice cubes in another clean and dry saucepan. Heat the first saucepan, and when the water comes to a rolling boil, hold the second saucepan tilted over the escaping water vapour, after having placed a third container (preferably a glass) underneath it, as shown in the diagram. Do this until a few drops of liquid are deposited in the glass. a) Note everything you observe during the heating process. b) Taste the liquid that has been deposited in the glass and note your observations. c) What do you call the process you?ve just observed? d) Explain what happened during the process.
#question.synthesis , postad date 1/12/2013, australia
variation of cnductivigy with temperature
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The α -particle scattering experiment of Rutherford concluded that: (1) The nucleus is made up of protons and neutrons (2) The number of electrons is exactly equal to number
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Melting and freezing points: When a pure solid substance is heated through its melting point (melting temperature), the solid changes to a liquid. At the melting point equilibr
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