WHAT IS METAL?
A metal is a chemical element that is a good conductor of both electricity and heat. Metals are malleable and ductile and have lustrous appearance. They have moderate to high physical constants and high tensile strength. Metals are further divided into two main groups - ferrous and non ferrous metals.
TYPES OF METAL
• FERROUS METAL
These are metals which contain iron. They may have small amounts of other metals or other elements added, to give the required properties. All ferrous metals are magnetic and give little resistance to corrosion.
Example: Wild steel, Carbon steel, Cast iron, Wrought iron, Stainless steel
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Stainless steel carbon steel cast iron
• NON-FERROUS METAL
These are metals which do not contain any iron. They are not magnetic and are usually more resistant to corrosion than ferrous metals. Examples: aluminum, copper, lead, zinc and tin.
Aluminum Brass Copper
WHAT IS NON METAL?
Non-metal is a term used in chemistry when a classifying the chemical elements, form negatively charged ions or anions. Non-metal also forms covalent bonding between non-metals.
TYPE OF NON METAL
A ceramic is an inorganic, non-metallic solid prepared by the action of heat and subsequent cooling. Example ceramics are used in the manufacture of knives, clay pot, and plate.
A plastic material is any of a wide range of synthetic or semi-synthetic organic solids used in the manufacture of industrial products. Plastics are typically polymers of high molecular mass, and may contain other substances to improve performance and/or reduce costs.
Glass is a non-crystalline solid material. Glasses are typically brittle, and often
PROPERTIES OF METAL AND NON-METAL
As shown on table below, the different and comparison of properties between metal and non metal. For conclusion, there are some advantage and disadvantage of both metal and non-metal by meaning of physical properties.
|PROPERTIES |METAL |NON-METAL | |STATE MATTER |SOLID AT ROOM TEMP EXCEPT MERCURY |EXIST IN ALL 3 CONDITION IN ROOM TEMP | |DENSITY |HIGH |LOW | |HARDNESS |HARD |NOT HARD | |BRITTLENESS |VERY STRONG |BRITTLE | |DUCTILITY |FLEXIBLE MATERIAL |NONDUCTILE | |MALLEABILITY |CAN BE SHAPED |GENERALLY BRITTLE | |MELTING POINT |HIGH |LOW | |APPEARANCE |LUSTER APPEARANCE |NO LUSTER | |CONDUCTION OF ELECTRICITY |GOOD CONDUCTORS OF ELECTRICITY AND HEAT |POOR CONDUCTORS OF HEAT AND ELECTRICITY | |TRANSPARENCY |NOT TRANSPARENT TO VISIBLE LIGHT |TRANSPARENT AS THIN SHEET...
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