Step into the fascinating world of hydrogen, an elemental cornerstone of the periodic table, as we unravel its intricate physical and chemical properties in this illuminating PDF presentation. "Unveiling the Mysteries: Exploring the Physical and Chemical Properties of Hydrogen" takes you on a journey through the fundamental characteristics that make hydrogen a unique and versatile element. Download now and embark on a captivating expedition into the elemental mysteries of hydrogen!

1. physical $ Chemical
properties
of Hydrogen

2. Hydrogen:
Hydrogen was discovered in the
16th century.
Antoine Lavoisier named it
Hydrogen.
1st Element.
Lightest Element.
Most abundant element in the
universe (70%)
Properties are similar to Alkali
Metals & Halogens.

3. Physical Properties:
Hydrogen is colorless, odorless & tasteless.
It is insoluble in water.
Hydrogen gas is flammable and relatively easy to
ignite.
It burns with a blue flame.
Hydrogen turns into a liquid when it is
cooled to a temperature below -252 °C
It exists in a diatomic state.

4. Chemical Properties
Decomposition of Molecular Hydrogen (H₂)
H₂ H+H
ΔH=104 kcal/mol
Temp: 1000k

5. Almost all metals and nonmetals react with hydrogen
at high temperatures.
Reaction with Metals & Non-Metals:

6. when hydrogen gas passed over the hot metallic
oxide of copper, lead, iron, etc. It removes oxygen
from them and reduces them to their corresponding
metal.
Hydrogen as a reducing agent:

7. The addition of hydrogen in a compound.
Hydrogenation is a chemical reaction between molecular
hydrogen and another compound or element, usually in
the presence of a catalyst such as nickel, palladium or
platinum.
Hydrogenation Reaction:

8. Uses of Hydrogen:
The most important use of hydrogen is ammonia
production and fertilizers.
Hydrogenation of unsaturated vegetable oils for
manufacturing Banaspati ghee.
Hydrogen is used as rocket fuel in many space
r research activities.
A hydrogen torch is used for cutting & welding of
metals

9. Thanks!