7. Hydrogen
Hydrogen is the most abundant and lightest element in the universe, playing a pivotal role in forming water and organic compounds. It exists in free and combined states and exhibits both physical and chemical properties that underline its significance in various applications. This chapter discusses the occurrence, preparation methods, uses, and safety precautions related to hydrogen.
Enroll to start learning
You've not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- Hydrogen is the lightest element in the universe and is found in both free and combined states.
- It has unique properties that categorize it as both a metal and a non-metal.
- Hydrogen is significant in various industrial applications such as fuel cells, ammonia production, and oil hydrogenation.
Key Concepts
- -- Atomic number
- The atomic number of hydrogen is 1, indicating it has one proton in its nucleus.
- -- Hydrogenation
- The process of adding hydrogen to unsaturated oils to convert them into saturated fats.
- -- Combustion
- Hydrogen burns in the presence of oxygen to produce water and heat, indicating its highly combustible nature.
- -- Electrolysis of Water
- A method to produce hydrogen by passing an electric current through acidified water, resulting in the separation of hydrogen and oxygen.
- -- Reducing Agent
- Hydrogen acts as a reducing agent by removing oxygen from metal oxides.
Additional Learning Materials
Supplementary resources to enhance your learning experience.