A phase change diagram provides several key pieces of information about a substance, mostly related to its states (solid, liquid, gas) and the transitions between these states. Based on the options provided, the following responses are applicable:
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the temperature at which the substance freezes - This is the freezing point of the substance.
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how much energy it takes to melt the substance - This refers to the enthalpy of fusion, the amount of energy required to change the substance from solid to liquid.
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the temperature at which the substance melts - This is the melting point of the substance.
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the temperature at which the substance decomposes - Some phase diagrams include decomposition, though not all do.
The following response is not applicable:
- how much mass the substance has - A phase change diagram does not provide information about the mass of the substance; it focuses on phase changes related to temperature and energy.
In summary, you should select the first four options as the correct responses.
1 answer