Question

Questions :-

1) State four chemical difference between metals and non-metals.

2) State four physical difference between metals and non-metals.

3) Describe all that you observe when a piece of sodium is dropped in water.

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Answer 1

Answer:

1. Metals and Non-metals chemical different.

Metals:-

• Metals form basic oxides.
• Metals displace hydrogen from water(or steam)
• Metals displace hydrogen from dilute acids.
• Metal form iconic chlorides with chlorine..

Non-metals:-

• Non-metals form acidic oxides or neutral oxides.
• Non-metals does not react with water (or steam)
• Non-metals do not react with dilute acids.
• Non-metals form covalent chlorides with chlorines,

2. Metals and Non-metals physical different.

Metals:-

• Malleable and ductile.
• Good conductor of heat and electricity.
• High melting point.
• High density.

Non-metals:-

• Brittle
• Poor conductor of heat and electricity.
• Low melting point.
• Low density.

3. When a piece of sodium dropped in water:-

When sodium is dropped in water , it's react expolsively and burn with a golden yellow frame .

The reaction is exothermic and vigourus . It form sodium hydroxide wth the liberation of hydrogen gas.

Answer 2

When sodium is dropped in cold water, it reacts explosively and burns with a golden yellow flame. The reaction is exothermic and vigourus. It form sodium hydroxide with the liberation of hydrogen gas.

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