Give 10 differences between metals and non metals with exception and best of given property
Answers
Physical state :- All metals [except mercury which is a Liquid ] are solid at rooms temperature ......ex– Iron , copper , aluminium and gold ...
Non metals [ at room temperature]may exists in solid , Liquid or gaseous state ...ex – Carbon , sulphur , phosphorus and iodine ...
Do remember :–
Melting point and Boiling point :– Metals generally have high melting as well as high Boiling of iron is and it's Boiling point is ......
Non metals generally have low melting point as well as low Boiling points ...For example –the melting point of sulphur is
=>The melting point of diamond [ form of Carbon ] is very high ex–
★Density :–
Metals generally have high density....
Non–metals generally have low density... However, there are some exceptions ...Sodium and potassium , which are metals have quite low density : their density value is less than that of water ....
★Hardness :–
Most metals are very hard ...They can withstand quite high pressure without getting disorted .....Non metals are generally not hard are brittle and easily break into pieces when hammered ....
★Lustre :–
Metals have high shining surface ...This is known as metallic Lustre ...Non –metals generally have a dull appearances that is ; they are non lustrous ... Iodine is the only non - metal which has a natural Lustre ...
★Melleablility :–
Metals are malleable , that is , they can be hammered into then sheets without breaking ...
Non - metals are non–malleable , that is , they can't be hammered into sheets ...
★Ductility :–
Metals can be drawn into thin wires ....This property of metals called ductility ....Copper , aluminium...etc...
Non metals are non - ductile ..
★Tensile strength :–
It is the property due to which a substance can ve bear a lot strain without breaking ..
Metals have high tensile strength due to their ductility and malleability. ..
Non –metals are generally don't have high tensile – strength. ..
★Conductivity :–
The ability of a material , to transfer heat energy or electrical current , from one point to another is taken as an indicator of it's conductivity ...
=>The two types of conductivities are :–
➡️Thermal conductivity :- The thermal conductivity of a material ; is a measure of ease with which heat energy can flow through it ...
➡️ Electrical conductivity :- The electrical conductivity , of a material is a measure of the ease with which electric current flow through it ..
★Sonorosity :– when a piece of metal is stuck with something hard a ringing sound is produced ...This property of metals is known a as Sonorosity .....Metals are said to be sonorous ...It is due to this property that metals are used for making bells ....
Non – metals are non - sonorous ...
=>There are some elements which shows some properties of metals as well as non – metals ....Such elements are called metalloids ... Silicon [Si] , germanium [Ge] , arsenic [ As] are the well known examples of metalloids ....
So , These are the physical properties of metals and non - metals ...
Metals and Nonmetals are different types of materials present around us. Elements can be divided into metals and nonmetals and it is important to know whether a particular element is a metal or nonmetal. Metals (like copper and aluminium) are good conductors of heat and electricity, while nonmetals (such as phosphorus and sulfur) are insulators. Materials are distinguished as above, based on their properties.