Oxygen in Changing Materials / International School of Central Switzerland (isocs)
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Oxygen (O) is a chemical element. In nature, oxygen is a gas with no color or smell. Oxygen is a very important element because it is a part of the air people breathe and the water people drink. Because of this, oxygen supports life. Many living things (including humans) need oxygen to live and breathe, though it is poisonous to some forms of life. In liquid state of matter, oxygen is blue. (link)

Oxygen - Periodic Table of Videos

Uploaded on Dec 21, 2008
Our updated Oxygen video features new footage displaying the paramagnetism of liquid oxygen.