Why Hot Water Freezes Faster: The Mpemba Effect Explained

Added: 2026-05-25

[00:00:00]Wait, what? Here at Dendro we break down why hot water sometimes freezes faster than cold water. Yes, you heard right. It's a real phenomenon, the Mpemba effect. Mind-bending, right?

[00:00:12]Imagine putting two identical containers into a freezer. One hot, one cold.

[00:00:18]Counterintuitively, the hot one can sometimes reach freezing point first.

[00:00:23]This isn't always true, but has been observed for centuries.

[00:00:27]It's due [music] to faster evaporation, which reduces water volume and fewer dissolved gases. Different convection currents also play a role, altering ice crystal formation. These factors [music] can make hot water freeze quicker.

[00:00:42]That's the science, now you know.