Question

-why is oil used instead of water to determine the melting point?‌
2-what kind of oil is used at the melting point?what is the reason you are using that oil?
3-why is the temperature different from the meltung point?​​

Answer 1

Answer:

1 Melting point is the temperature at which a pure crystalline solid transforms into its liquid form. In the molecular level, when the melting point of the solid is reached, the additional energy in the system causes the the intermolecular forces to be disturbed resulting to a loss in the system's order

2Paraffin oil is used for determination of boiling point and melting point for the following reasons: It has a very high boiling point and so it can be used to maintain high temperatures in the boiling and melting point apparatus without loss of the substance.

3Melting point, temperature at which the solid and liquid forms of a pure substance can exist in equilibrium. As heat is applied to a solid, its temperature will increase until the melting point is reached. More heat then will convert the solid into a liquid with no temperature change.