Question

what are the characteristics of molecules of a substance​

Answer 1

Answer:

The melting point is a temperature that indicates when a solid substance changes to a liquid. The boiling point is a temperature that indicates the point at which a liquid changes to a gas, or vapor. Molecular substances tend to have relatively low melting and boiling points, which explains why they are usually gasses and liquids

Answer 2

All molecules have definite mass and size that are dependent on the atoms from which the molecule is made . The mass is equal to the sum of the the masses of all the individual atoms in the molecular structure. The size is also dependent on the arrangement of the atoms within the molecule and how tightly they are joined together.