How Is Oxygen Used

This video explores the properties of oxygen, its role in respiration, and its chemical reactions. Oxygen, with atomic number eight, is a colorless, odorless gas essential for life on Earth. It makes up 21% of the Earth's atmosphere and is crucial for respiration, where it combines with glucose to release energy. Oxygen also reacts with metals, forming oxides like rust, which can be harmful, or protective layers like aluminum oxide. The video also discusses oxygen production in labs and its potential environmental impact if atmospheric levels were higher.

Explain how oxygen contributes to corrosion.

What would happen if the Earth's atmosphere consisted of 30% oxygen?