Question

for this experiment, the melting point will be used for which of the following qualitative purposes? select all that are true.

Answer 1

The melting point is used for identification, purity assessment, and determining the phase state of a substance.

Step-by-step explanation:

The melting point is used for several qualitative purposes:

1. Identification: The melting point can be used to identify substances. Each substance has a unique melting point, so comparing the melting point of an unknown substance to known values can help determine its identity.
2. Purity: The melting point can indicate the purity of a substance. Pure substances have a sharp melting point, while impurities can lower and broaden the melting range.
3. Phase State: The melting point can indicate whether a substance is in a solid, liquid, or gas state at a given temperature. Below the melting point, the substance is solid, at the melting point it transitions to a liquid, and above the melting point it is a liquid.