The melting point and freezing point is when substances change from a liquid to a solid or a solid to a liquid.
(The melting point and freezing point; is; when substances change from a liquid to a solid or a solid to a liquid) (substances; change; from a liquid; to a solid)
The melting point and freezing point substances
is change
when substances change from a liquid to a solid or a solid to a liquid
from a liquid to a solid