Help w/ Evaporating Water!

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Help w/ Evaporating Water!

Postby superlaura » Sat Dec 08, 2012 12:44 pm

Hello! My son is trying the "How Salty is the Sea" project, and we are now conducting the experiment. We chose 5 water samples, and we put them in the larger baby food jars. They are in the oven at 220 degrees as we speak. The experiment states that it takes a few hours to evaporate... 2.5 hrs have passed and the water levels haven't decreased at all! Am I missing something? Thanks!
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Occupation: Parent
Project Question: We are conducting the How Salty is the Ocean experiment, and the question is regarding how long it takes for water to evaporate in the oven.
Project Due Date: 12/10/12
Project Status: I am conducting my experiment

Re: Help w/ Evaporating Water!

Postby donnahardy2 » Sun Dec 09, 2012 9:52 am

Hi Superlaura,

Wecome to Science Buddies!

I think you are doing this excellent analytical project from the Science Buddies website.

http://www.sciencebuddies.org/science-f ... #procedure

It’s been almost a day since you posted, so hopefully by now, the water has evaporated from all of the jars. In this experiment, there are two options for evaporating the water from the jars, at ambient temperature for several weeks, or in an oven at low heat for several hours. The evaporation rate would depend on a number of factors, including the initial temperature, surface area, and relative humidity, but would take time.

I am interested in know what happened. What size canning jars did you use, and how long did it take for all of the water to evaporate?

Donna Hardy
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