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4:-Physical Properties of Metals:-
Metals are lustrous, malleable, ductile, good conductors of heat and electricity. Other properties include: State: Metals are solids at room temperature with the exception of mercury, which is liquid at room temperature (Gallium is liquid on hot days).
5:-Chemical Properties of Nonmetals:-
Unlike metals, nonmetals aren't malleable and ductile. Nonmetals react more with metals than with nonmetals. Usually, nonmetals react with other nonmetals in high temperature. Most nonmetals do not react with air in room temperature.
6:-When Na metal is dropped in water, it reacts violently to form sodium hydroxide and hydrogen gas. Due to extreme heat released as the reaction is exothermic, the gas catches the fire. ... When you drop a piece of sodium acetate in water.
7:-Some uses of metals are as follows :-
Iron, copper, and aluminium metals are used for making cooking utensils. Aluminium metal is used for making electric cables and over-head electric transmission lines. Mercury metal is used for making thermometers. Silver and gold metals are used for making jewelleries.
8:-Uses of nonmetals in our daily life:-
>Oxygen which is 21% by volume helps in the respiration process.
>Nonmetals used in fertilizers: Fertilizers contain nitrogen.
>Nonmetals used in crackers: Sulfur and phosphorus are used in fireworks.
9:-Phosphorus occurs in at least 10 allotropic forms, the most common (and reactive) of which is so-called white (or yellow) phosphorus which looks like a waxy solid or plastic. It is very reactive and will spontaneously inflame in air so it is stored under water.
10:-When sulfur dioxide is dissolved in water it forms sulfurous acid.When sulphur dioxide is dissolved in water, then it forms sulphuric acid and sulphurous acid (H2SO3).
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Answer:
4) Chemical Properties of Metals:-
*Metals are malleable and ductile.
*Metals are good conductors of heat and electricity.
*Generally, metals are in a solid state at room temperature.
*Metals form an alloy with other metals or non – metals.
5)Chemical Properties of Nonmetals:-
*Nonmetals are poor conductors of heat and electricity.
*Unlike metals, nonmetals aren't malleable and ductile.
*Nonmetals react more with metals than with nonmetals.
*Usually, nonmetals react with other nonmetals in high temperature.
6) When Na metal is dropped in water, it reacts violently to form sodium hydroxide and hydrogen gas.
Due to extreme heat released as the reaction is exothermic, the gas catches the flre.
7) Some uses of metals are as follows :
*Aluminium foils are used for packaging medicines, chocolates, decorating sweets, wrapping food, etc.
*Aluminium metal (in the form of alloys) is used to make aeroplanes.
* Iron, copper, and aluminium metals are used for making cooking utensils.
*Aluminium metal is used for making electric cables and over-head electric transmission lines.
*Mercury metal is used for making thermometers.
*Silver and gold metals are used for making jewelleries.
*Zinc metal is used for galvanising iron to protect it from rusting.
8) Now some uses of non-metals are as follows:
*Oxygen is a non-metal which is used by plants and animals for breathing. It is also used in the process of burning (or combustion) of fuels in our homes.
*Chlorine is a non-metal which is used in the purification of water.
*Iodine is a non-metalwhich is used for making a purplecoloured solution called tincture iodine which is used as an antiseptic on cuts and wounds.
*Sulphur and phosphorus are non-metals which are used in fireworks.
*Carbon is a non-metal which is used as a fuel.
* Sulphur is a non-metalwhich is used in the vulcanisation of rubber.
9) Phosphorus occurs in at least 10 allotropic forms, the most common (and reactive) of which is so-called white (or
yellow) phosphorus which looks like a waxy solid or plastic. It is very reactive and will spontaneously inflame in air so it is stored under water.
10)
When sulfur dioxide is dissolved in water it forms sulfurous acid. The chemical equation is shown in the image see it.....
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