As the temperature of a mixture increases, when one part of the mixture melts, the other part ___

may not melt

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will always melt

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will never melt

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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) filings. As we increase the temperature, the salt will melt at a lower temperature as compared to iron.

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