Does the melting point range change as the heating rate changes? If so, is there a direct or inverse relationship?

. Does the melting point range change as the heating rate changes? If so, is there a direct or inverse relationship? Give a reasoned hypothesis to explain your observations
2. Is the melting point enough to definitely identify your compound? Explain your answer and give an actual example.
3. List four additional physical method that can be used to help identify your compounds definitely.