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Question

Consider a mixture of table salt and iron fillings. As the temperature of a mixture increases, one component of the mixture melts. What happens to the other component of this mixture?

A

may not melt

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B

will always melt

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C
will never melt
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D
none of these
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Solution

The correct option is A

may not melt


We can observe a mixture where one portion begins to melt before the other portion. Heterogeneous mixtures have different compositions throughout. Each of these parts has individual physical characteristics. One of those characteristics is melting temperature. For example: a mixture of table salt (NaCl) and iron (Fe). As we increase the temperature, the salt melts at a lower temperature as compared to iron.

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