Back to Show
Reactions
Hot Water Freezes Either Faster or Slower Than Cold Water
Season 11
Episode 4
The Mpemba Effect happens when hot water freezes quicker than room temperature water, or does it? Alex goes on an exhaustive journey to replicate the Mpemba effect and hits a few snags on the way, including a paper being released the week this video was supposed to come out. Does this paper finally resolve all existing ambiguities about measuring relaxation speeds in the Mpemba Effect?
Sign up now for inspiring and thought-provoking media delivered straight to your inbox.
Support Provided By

11:46
How does lime juice turn raw fish into delicious ceviche? We explain with biochemistry!

10:31
Forever Chemicals last… forever. Can a new technology finally send them to their doom?

8:21
Reducing the carbon footprint of concrete and cement by relying on biology.

9:13
Mosquitos really do prefer some people over others, and this Reactions ep explains why!

13:50
Discover the single most important chemical reaction on Earth, and why we need to kill it.

9:38
This week Reactions dives into something truly out-of-this-world: amorphous ice.

15:51
Are we about to re-define meat? If so, what is meat?!

11:48
How do carbon dioxide molecules trap heat in our atmosphere?

10:37
Why has the European Union banned certain colors for tattoos?

12:29
Can we solve electric vehicle fires before we fully understand what’s happening?

15:58
Fluffy, delicious bread results when starch gelatinization and flour chemistry combine!

12:35
Join George (and, occasionally, Andrew) as they chart corn’s epic chemical journey.