define metals and non metals? Give example
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NON METAL
A nonmetal is a chemical element that mostly lacks the characteristics of a metal. Physically, a nonmetal tends to have a relatively low melting point, boiling point, and density. A nonmetal is typically brittle when solid and usually has poor thermal conductivity and electrical conductivity. .
METAL
A metal is a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. Metals are typically malleable or ductile.
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Metals!
↪Metals are the elements that are good conductors of heat and electricity.
↪Metals are Lustrous elements.
↪Metals are ductile and malleable.
↪Moslty metals are denser.
Examples:-
- Gold
- Copper
- Lead
- Silver
- Mercury(although it is a liquid but it is considered as a metal)
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Non-Metals!
↪Non-metals are bad conductors of heat and electricity.
↪Non-metals are not lustrous at all.
↪Non-metals has poor thermal conductivity.
↪They gain or share electrons when they react with other elements.
Examples:-
- Carbon
- Sulphur
- Oxygen
- Hydrogen
- Chlorine
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