The Importance of Oxygen: Exploring the Composition of Air and the Surprising Facts about Neon

The video tutorial discusses the composition of air, highlighting that only 21% is oxygen, while 78% is nitrogen. It introduces neon, a scarce yet abundant element outside Earth, and its various applications, such as in neon signs and electronic equipment. The challenges of harvesting neon on Earth due to its scarcity are also explored, with a hopeful note on future scientific advancements.

What percentage of the air we breathe is composed of oxygen?

• 21%

• 99%

• 50%

• 78%

Which gas makes up the majority of the air we breathe?

• Oxygen

• Carbon Dioxide

• Nitrogen

• Neon

What is a notable characteristic of neon in the universe?

• It is the most abundant element.

• It is the second most abundant element.

• It is the fourth most abundant element.

• It is the rarest element.

What was one of the first uses of neon on Earth?

• Diving gear

• Lasers

• Refrigeration

• Neon signs

Why is neon not practical for most applications on Earth?

• It is too expensive.

• It is too reactive.

• It is too heavy.

• It is scarce and difficult to harvest.