How can you tell which one is water? Help with science!!!!!?

Question

In science class we are doing a experiment with water. There are 7 different test tubes with 7 different types of clear liquid. We need to find out which one is water, but how?? We can't taste or smell or touch.

Answer 1

boiling may be the way to go, but if the other liquids have a boiling temp near 100 its going to be hard.

freeze then, water is the only liquid to expand when it freezes, so do that.

burn it, water wont burn, lol

if its pure water, and not tap water, then i should not conduct electricity,

if the other ones contain noo water at all, then stick it in the microwave oven and which one ever boils or heats up will be water, as it has a polar molecule and will heat, other liquids, such as ethanol arnt polar, so they wont heat up

so i reckon in the MICROWAVE OVEN, and see it if it boild

Answer 2

Like stated above, boil the liquid.  Except water boils at 100 degrees celcius, and 212 degrees F.

Answer 3

The best way is to get a beaker, if available, and put a thermometer plus the "fluid" in the beaker.  Heat the fluid to 100 degrees Farenheit and if it begins to boil, it is pure H2O.  That is about the only way to tell.  All compounds have different boiling points, so go figure.  Anyways, hope this helps!

Answer 4

freeze and boil,water freezes at 32deg f and boils at 212 deg f i doubt any other liquid has these properties...tom

Answer 5

get some water and find the one that maches

Answer 6

Since every chemical has a different boiling point, H2O's will be unique.

Heat each substance up to 100 degrees Celsius and 212 degrees F.

But remember, if all of them exceed or don't meet the boiling point of water, you have got to remember that water boils at a different temperature at different altitudes.  so if your below sea level, then the boiling point will be higher, and if you are like in the mountains, it will be lower. the maximum change could be at least 2 degrees.

hope this helps!!!

Answer 7

heat it up maybe, not sure