Write down one application of each of the following
methods of separating mixtures.
(a) filtration
(b) evaporation
(c) crystallisation
(d) distillation
(e) chromatography
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Book: Introductory Chemistry (CK-12)
2: Matter and Change
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2.8: Methods for Separating Mixtures
Last updatedMar 9, 2021
2.7: Heterogeneous Mixtures
2.9: Elements
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Beginning in the late 1840s, thousands of prospectors rushed to California to search for gold. One of the approaches taken to isolate the gold from the soil was called "panning". To pan, dirt is placed in a pan and covered with water. After mixing thoroughly, the pan is gently swirled to remove dissolved material, while the heavier gold settles to the bottom of the pan. The gold is then separated from the mixture of soil and water.
Not everyone is out searching for gold (and not many of those searches will get much gold, either). In a chemical reaction, it is important to isolate the component(s) of interest from other materials, so that they can be further characterized. Studies of biochemical systems, environmental analysis, pharmaceutical research—these and many other areas of study require reliable separation methods. Here are a number of common separation techniques:
Explanation: