system
Given the following post, respond as if you're commenting on Reddit:
human
Would heavy water turned to ice still float on normal water

I want to know deuterium in its solid form would still float like normal ice.  Also would it freeze in the same way that normal water would?
*Thanks for all the very complete answer!*
gpt
For those reading, he's referring to deuterium water, which is where the two hydrogen atoms in an H2O molecule have an additional neutron in their respective nuclei (normally the hydrogen atoms just consist of a proton and an electron). This alters the mass of the molecule, which affects many of its properties on a macroscopic level. The density of "normal" ice is about .92 g/cm^3, while the density of normal water is about 1.0 g/cm^3, which is why ice floats in water. The density of deuterium ice is about 1.02 g/cm^3, which is just slightly more than liquid (normal) water - so it would sink, just barely.