LAST LECTURE | METALS AND NON METALS | FULLY EXPLAINED |

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🔬 Metals and Non-Metals | Properties & Examples
In this video, we will learn about metals and non-metals, their properties, and everyday uses.
✨ Metals
Metals are elements that are generally hard, shiny, and strong.
They are good conductors of heat and electricity, which is why they are widely used in wires, utensils, machines, and buildings.
Common properties of metals:


Lustrous (shiny)


Malleable (can be beaten into sheets)


Ductile (can be drawn into wires)


Sonorous (produce sound when struck)


Good conductors of heat and electricity


Examples: Iron, Copper, Gold, Aluminum

🌿 Non-Metals
Non-metals are elements that are usually dull and weak.
They are poor conductors of heat and electricity, but they are essential for life and many chemical processes.
Common properties of non-metals:


Non-lustrous (not shiny)


Brittle (break easily)


Not malleable or ductile


Poor conductors of heat and electricity


Examples: Oxygen, Carbon, Sulfur, Nitrogen

📌 Conclusion
Both metals and non-metals play an important role in our daily life.
Understanding their properties helps us know where and how they are used.
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🔬 Metals and Non-Metals | Detailed Explanation

Everything around us is made of elements, and these elements are mainly divided into metals and non-metals based on their properties.

✨ Metals – Explained in Detail

Metals are elements that are generally hard, shiny, and strong. Most metals are solid at room temperature (except mercury).

🔹 Physical Properties of Metals

Lustrous: They have a shiny surface

Malleable: Can be hammered into thin sheets (example: aluminum foil)

Ductile: Can be drawn into wires (example: copper wires)

Good conductors: Allow heat and electricity to pass easily

High melting point: Do not melt easily

Sonorous: Produce ringing sound when struck

🔹 Chemical Properties of Metals

React with oxygen to form metal oxides

Most metal oxides are basic in nature

React with acids to produce hydrogen gas

🔹 Uses of Metals

Iron → buildings, tools, machines

Copper → electrical wires

Gold & Silver → jewelry

Aluminum → aircrafts, utensils

🌿 Non-Metals – Explained in Detail

Non-metals are elements that are generally soft, dull, and lightweight. Some non-metals exist as gases at room temperature.

🔹 Physical Properties of Non-Metals

Non-lustrous: Do not shine

Brittle: Break easily when solid

Poor conductors: Do not conduct heat and electricity

Low melting point (except diamond)

🔹 Chemical Properties of Non-Metals

React with oxygen to form non-metal oxides

Most non-metal oxides are acidic in nature

Do not react with acids to produce hydrogen

🔹 Uses of Non-Metals

Oxygen → breathing

Carbon → fuels, pencils (graphite)

Nitrogen → fertilizers

Sulfur → medicines, rubber industry

⚖️ Difference Between Metals and Non-Metals
Metals Non-Metals
Shiny Dull
Good conductors Poor conductors
Malleable & ductile Brittle
Mostly solids Solids, liquids, or gases
📌 Conclusion

Metals and non-metals are essential for life and industry. Knowing their properties helps us understand why different materials are used for different purposes.

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