· just now. Report Abuse. Pure ice will melt whenever the temperature is above freezing, and pure water will freeze whenever the temperature is below freezing. The Celsius temperature scale was established using the melting point of water as 0° and the boiling point of water as 100°.The answer to your question is that ice as big as a fridge will melt whenever the temperature is above 0°C. just now. Report Abuse. Pure ice will melt whenever the temperature is above freezing, and pure water will freeze whenever the temperature is below freezing. The Celsius temperature scale was established using the melting point of water as 0° and the boiling point of water as 100°.