Chemical Properties of Metals | Chemistry

In this animated lecture, I will teach you about chemical properties of metals.


Q: What are the chemical properties of metals?
Ans: Following are the 5 different chemical properties of metals.

I) Reaction with Oxygen.
Metals react with oxygen to form metal oxides.
For example, reactive metals like Potassium, Sodium and Calcium react with oxygen to form metal oxides.

Secondly, Magnesium, Aluminum and Zinc also react with oxygen to form metal oxides, but metal oxides form a thin protective layer which protect the inner parts from oxidation.

Thirdly, less reactive metals like Gold and Silver don't react with oxygen.

Remember that metals form basic oxides. Basic is defined as those oxides which have basic nature. They turn red litmus paper blue.

Some less reactive metals like Zinc and Aluminium form Amphoteric Oxides. Amphoteric Oxides are those oxides which have both acidic and basic nature. For example, Zinc Oxide an Aluminum Oxide are Amphoteric Oxides.

2) Reaction with water.
Metals react with water to form metal hydroxide and Hydrogen gas.
For example, most reactive metals like Potassium, Sodium and Calcium react with water to form metal hydroxide and Hydrogen gas.

Less reactive metals like Magnesium, Aluminum and Zinc do not react with cold water. They react with hot water to form their respective metal oxides and Hydrogen gas.

3) Reaction with Dilute Acids.
Metals react with Dilute Acids to form their respective metallic salts and Hydrogen gas.
For example, Sodium react with Dilute Hydrochloric Acid ti form Sodium Chloride and Hydrogen gas.

4) Reaction with metallic salts.
Most reactive metals displace the leds reactive metal from its salt.
For example, if you add zinc to the dilute solution of Copper Sulphate, you will get zinc sulphate and copper will precipitate out.

5) Reaction with hydrogen.
Only few reactive metals like Potassium, Sodium and Calcium react with hydrogen to form metal hydride.
For example, Sodium react with hydrogen to form metal hydride.

To learn more about the chemical properties of metal hydride, watch this lecture till the end.

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