Chemistry (including Biochemistry)/Water boiling

Advertisement


Question
Hi, the other day I was boiling some water, and i was wondering in the begining of the boiling, you can see the bottom of the pan making little bubbles. In order to make a bubble under water, that bubble must somehow find a way to some oxygen right? because it is all the way at the bottom of the pan, how and where does it get that oxygen? If that is how it is really formed, and what exactly do you call that process? Thank you for your time.

Answer
Normal water has oxygen in it 1-8 mg/L.  But the bubble you saw was not oxygen.  What happens when water gets to 100C?  It start turning into water vapor (gas).  Water vapor is a gas.  Since the bottom of the pan is the first to get that hot, the vapor forms in the bottom and the water vapor forms the bubbles.  There will be some bubbles of O2 and CO2, but you really can't see them.

Chemistry (including Biochemistry)

All Answers


Answers by Expert:


Ask Experts

Volunteer


Dr. Henry Boyter, Jr.

Expertise

No homework, biochemistry, or other schoolwork! The question will be rejected. If you have not searched www.google.com, do so before posting. If you are a student, give your grade and course. Everyone, explain the purpose and context for the question.
Experience in the area
Chemistry (non-biochemistry), environmental science, occupational health and safety, environmental regulation and management, environmental engineering, and wastewater engineering. I'm the Director of Environmental, Health, and Safety and the Director of Research at the Institute of Textile Technology.

Experience

Chemistry (non-biochemistry), environmental science, occupational health and safety, environmental regulation and management, environmental engineering, and wastewater engineering. I'm the Director of Environmental, Health, and Safety and the Director of Research at the Institute of Textile Technology.

Education/Credentials
PhD, MS, BS in Chemistry

©2012 About.com, a part of The New York Times Company. All rights reserved.