The freezing temperature of argon is -189 C. what other process occurs at that temperature?

Question

vaporization

boiling

condensation

melting

evaporation

Answer 1

If it goes from being a liquid to being a solid (freezing) at -189 C, then it can only do one other thing.  Go from being a solid to a liquid (melting).

If the temperature before reaching -189 C is > -189 C eg. -188 C then it will be freezing.  If it is the other way around it would be melting.

Answer 2

the first answerer is correct except about his last sentence. If the freezing pt of a substance is -189 C, then at -188 C it is melting, or in liquid form and at -190 C it is freezing, or in solid form, not the other way around...