Dihydrogen H2
Chapter Name : Hydrogen |
Sub Topic Code : 102_11_09_02_01 |
Topic Name : Dihydrogen H2 |
|
Sub Topic Name : Occurrence |
|
Introduction
• Dihydrogen is the most abundant element in the universe and constitutes 70% of the total mass of universe. • It is the principal element in the solar atmosphere. Jupiter and Saturn planets are largely made up of dihydrogen. • Due to its light nature, only 0.15% by mass of dihydrogen is found in the earth’s atmosphere. • Also in combined forms such as water, hydrides, etc., it constitutes 15.4% of the earth’s crust and oceans. .
Real Life Question:
How does hydrogen occur in nature?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Dihydrogen | In elemental form, hydrogen exists as a diatomic molecule and is called as dihydrogen. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Water | Water is a combined form of hydrogen, it can be found abundantly on earth. |
Real life uses :
Dihydrogen is used as a fuel, coolant in petroleum and chemical industries.
Practical examples around us
| Examples | Explainations |
|---|---|
| Water bodies | Water is a combined form of hydrogen. |
| Carbohydrates | Sugar, cereals, breads, all contain carbohydrates, which is a compound of hydrogen. |
| Plants | They contain plant tissues which further contain hydrogen. |
What you learn in Theory:
Natural occurrence of dihydrogen.