Metal and Non-Metal notes

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Metal-Metals are lustrous, typically solid materials found in the Earth’s crust, characterized by high electrical and thermal conductivity, malleability, and ductility For Example- Steel,Aluminium,iron,copper,gold

Malleability: Malleability is the property of a material to withstand deformation under compressive stress. In the context of metals, it refers to their ability to be hammered or rolled into thin sheets without breaking.
Ductility: Ductility is the property of a material to undergo significant plastic deformation before rupture or breaking. In metals, it refers to their ability to be drawn into thin wires.
Conductivity: Metals are good conductors of both heat and electricity due to the presence of free electrons that can move freely.
Luster: The shiny appearance of metals, known as luster, is a result of the reflection of light by the metal surface.
Melting and Boiling Point: Metals are known for their high melting and boiling points. The melting point of tungsten is the highest, while the boiling point of silver is the lowest. The melting values of sodium and potassium are both low.
Hardness: Except for sodium and potassium, which are soft and can be cut with a knife, all metals are hard.

Non-metals exhibit very low electrical conductivities. The low or non-existent electrical conductivity is the most important property that distinguishes non-metals from metals.
Physical State: They exist in all three states (solid, liquid, or gas) at room temperature.
Appearance: They are dull and non-lustrous.
Brittleness: Solid non-metals are brittle, breaking easily when hammered rather than forming thin sheets (not malleable) or being drawn into wires (not ductile).
Conductivity: They are poor conductors of heat and electricity (insulators). Exception: Graphite (a form of carbon) is a conductor.
Density: They generally have low densities.
Sonorousness: They are non-sonorous, meaning they do not produce a ringing sound when struck.