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Separating mixtures Part II |
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Place the filtrate
in an evaporating basin and heat strongly using a Bunsen burner.
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| Place a glass funnel directly over the evaporating basin so that the rim of the basin touches the inside of the funnel as shown on the right. |
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| Secure rubber tubing to the end of the funnel. |
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| Place ice in aluminium foil or in a cloth towel. |  |
| Wrap the aluminium foil around the rubber tubing and place the end of the tubing in a beaker. |
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| 1) Why is ice placed around the rubber tubing? | |
| Water droplets soon appear on the inside of the funnel as shown on the right. Complete the statement below by selecting the correct response. |  |
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The of salt and water can be separated by heating until all the water , leaving behind pure salt. Salt is a because it is formed from chlorine and sodium atoms. As the rises through the tube it is cooled and back into a . Explain what happens in the evaporating basin as heat is applied. Click to see an animation.. |
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