Thermal properties of bottled vs. tap water


Gold Member
Ok so i had an idea!

What freezes faster, tap water or the bottled water!

While I have no real way of accurately testing it... i decided just to ask basic questions :).

What exactly is the property called as to how quickly something cools down. I want to say thermal conductivity but it seems like that is the "transfer" rate and not the... "intake" rate if thats a good word for it. I figure their freezing points are the effectively the same based on the kind of precision i could attain without any real lab equipment.

Does anyone happen to know which freezes faster off hand? :)
Last edited:

Claude Bile

Science Advisor
I would guess the purified water freezes first, courtesy of tap waters saltiness (Although the properties of tap water varies from region to region, as well as the chemical composition of different brands of bottle water, so the validity of this guess maybe somewhat limited).


The Physics Forums Way

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving