Question

When the melting point of a substance is defined as the constant temperature at atmospheric pressure?

Answer 1

Because of the atmospheric pressure will be changed it would increase or decrease the speed.

Answer 2

Answer:

Atmospheric pressure, also known as barometric pressure, is the pressure within the atmosphere of Earth. The standard atmosphere is a unit of pressure defined as 101,325 Pa, which is equivalent to 760 mm Hg, 29.9212 inches Hg, or 14.696 psi.