Metals and non metals

Question 1

metals (uses & properties)

Answer 1

metals are those solid substances which are hard malleable, ductile and good conductors of heat and energy. it is used for aking cooking utensils, construction material, vehicles, ornaments, furniture, electric wrires, weapons, etc. 
properties:
- malleable
- ductile
- good conductors of heat and energy
- they are shiny (lustrous)
- produces tinkling sound when heate.

Question 2

non metals (uses & properties)

Answer 2

non metals are those substances which are generally soft, non-malleable, non- ductile, and bad conductors of heat and electricity. it is used for construction works, to make containers, utensils, medicines etc.
properties:
- non malleable
- non ductile
- found in 3 state: solid, liquid and gas
- bad conductors of heat and electricity.

Question 3

metalloids

Answer 3

metalloids are those solid substances which show the properties of both metals and non metals.

Question 4

alluminium (properties &uses)

Answer 4

it is a bluish-white metal which is extracted from bauxite ore and is a reactive metal. thus, it is notfound in free state in nature.
properties:
- it is light metal havinf bluish- white colour.
- it is malleable and ductile.
- it is a good conductor of heat and electricity.
- it is not affected by air and water,
- it does not rust.
uses:
- it is used for making cooking utensils, foils, and food wrappers.
- it is used for making bodies and parts of vehicles.
- it is used for makinf head electric cables, coins and alloys.

Question 5

iron (properties &uses)

Answer 5

it is a greyish- white metal which is mainly extracted from haematite and magnetite ores.
properties:
- it is greyish- white metal.
- it is malleable and ductile.
- it is a good conductor of heat and electricity.
- it reacts with moist ait and get rusted.
- it reacts with acids.
uses:
- it is used for making cooking utensils.
- it is used for making vehicles like bus, truck, car, motorcyclr, bicycle,etc.
- it is used for making weappons, tools, furniture, etc.
- it is used for making steel.
- it is used for making rods, pipes, nuts and bolts.

Question 6

copper (properties &uses)

Answer 6

copper is the raddish- brown metal which is extracted from chalcopyrite ore.
properties:
- it is reddish-brown metal
- it is malleable and ductile.
- it is a good conductor of heat and electricity.
- it reacts with acids.
- it doesnot ruts.
uses:
- used for making electric wires and electronic equipments
- used for making utensils, coins, medals and statues.
- used for making medicines.
- used for making brass, bronze, bell metal,etc.

Question 7

silver (properties &uses)

Answer 7

silver is a shiny-metal which is extracted from argentite ore.
properties: 
- it is shiney - white metal.
- it is malleable and ductile.
- it is a good conductor of heat and electricity.
- it does not reat with dilute acids.
- it doesnot rust. 
uses:
- it is used for making ornaments.
- it is used for making medicines.
- used for filling cavities in teeth.

Question 8

gold (properties &uses)

Answer 8

gold is a yellow, shiny and expensice metal,
properties:
- it is yellow shiny metal.
- it is malleable and ductile.
- it is a good conductor of heat and electricity.
- it does not reat with air, water and acids.
uses:
- used for making ornaments and jewelery.
- used for making medals, coins, statues and idols.
- used for making medicines.
- used for filling cavaties in teeth.

Question 9

sulpher (properties &uses)

Answer 9

sulpher is a crystalline solid without taste and odour.
properties:
- it is a yellow crystalline solid.
- it is odourless and tasteless.
- it burns in air,
- it is insoluble in water.
- it doesnot reat with acids.
uses:
- used for making sulpheric acid, fire crackers, gun powder, matches and dyes.
- used for making skin ointment for curing skin diseases.
- used for hardening rubber.
- used in beauty parlours for hair setting.

Question 10

silicon (properties &uses)

Answer 10

it is a grey metalloid which does not occur in free state in nature.
properties:
- it is grey solid.
- it is found in crystalline as well as aorphous from in nature.
- it is a poor conductor of heat and electricityy.
- doesnot reacts with air, water and acids.
uses:
- used for making glass and ceramic utensils.
- used as a semi- conductor in electric equipment
- used for aking polish and colours.

Question 11

positions of metal, non metal and metalloids in modern periodic table

Answer 11

in the periodic table, metals are places on the left side. hydrogen is a non metal which is placed at the top of metals. non metals are placed on the right side of the modern periodic table. metalloids are placed in the between metals and nonmetals in the modern periodic table because they show properties of both metals and non metals.