Description: Students discover the air is 21% oxygen.
Keywords: candle, lab, students, discover, air, 21, oxygen
Created by: Linda Maggi Added: 2013-10-29
Earth Science (Meteorology) Views: 696
File: Be sure you have an application to open this file type before downloading. Click here for more information.
The continued strength of this site depends on teacher contributions. Please help make this site stronger by submitting a file today. Submitting is easy, simply click here to get started. Thanks!
For classroom use under a: Creative Commons License