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Question

The temperature at which a solid changes into a liquid is called:

A
freezing point
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B
melting point
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C
boiling point
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D
None of the above
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Solution

The correct option is B melting point
When a solid is heated, the particles are given more energy and start to vibrate faster. At a certain temperature, the particles vibrate so much that their ordered structure breaks down. At this point, the solid melts into liquid. The temperature at which this change from solid to liquid happens is called the melting point. Each solid has a set melting point at normal air pressure.

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