General Question

chucklmiller's avatar

Is there a liquid less viscous than water?

Asked by chucklmiller (391points) May 17th, 2009

Just wondering…

Observing members: 0 Composing members: 0

14 Answers

Tobotron's avatar

Yep ethyl alcohol and methanol are two I remember…

phoenyx's avatar

Both ethanol and methanol are more viscous according to this table. Now I’m curious and am going to do some researching. I wonder if any liquified gases are any less viscous…

evelyns_pet_zebra's avatar

I was going to make a comment about you keeping your vicious water away from my well-mannered dog, but decided not to.

Tobotron's avatar

water 0.894 methanol 0.544 mmm so less viscous but I would seem to be wrong with my other one…lol

phoenyx's avatar

Doh, you are right about methanol. I misread it. Looks like liquid nitrogen is less viscous too.

I shouldn’t have answered so quickly.

FrankHebusSmith's avatar

Yes, lots of them. Bust out a chemistry book and look it up… they usually compare viscosity to the viscosity of water.

AstroChuck's avatar

Wouldn’t logic dictate liquid hydrogen as having the highest viscosity?

Tobotron's avatar

@AstroChuck Sciences in Moscow have revealed convincing evidence for superfluidity in liquid hydrogen (S Grebenev et al. 2000 Science 289 1532). Surely that would show the opposite if I’m understanding it correctly, so liquid hydrogen would in fact be the least viscous!?

Fyrius's avatar

Viscous” seems to mean “Having a thick, sticky consistency between solid and liquid”, so yeah, something more liquid would be less viscous.

An example of a liquid with immense viscosity would be glass.
I’m still amazed by the fact that glass is technically not a solid. A friend studying chemistry explained it to me a few years ago.

AstroChuck's avatar

@all- I actually meant lowest.
@AstroChuck- Duh.

chucklmiller's avatar

@Tobotron: What exactly is superfluidity?

Tobotron's avatar

I’m assuming its where there is no resistance between the liquid…eg if you could rub water on water there would be some resistance and superfluidity would be as if there was zero resistance…you’ld probably have to Google it to be sure though…

Fyrius's avatar



Because Wikipedia > Google, at least for stuff like this. It’s the best place you could hope Google to lead you to, anyway. Saves you a detour.

foozeled_bagels's avatar

@Fyrius glass is not technically liquid but instead an amorphous solid. Here’s a veritasium video on it

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