Question

F Answer the following questions in detail.
1. Distinguish between the physical properties of metals and non-metals.
2. Describe briefly the chemical properties of metals with the help of examples.
3. List the uses of any five metals.
4. Describe the uses of any five non-metals.​

Answer 1

Answer:

here is your answer

Explanation:

1...Property Metals Non- Metals

(a) Lustre They are lustrous, they shine. They are non-lustrous. Exception- Graphite, Iodine

(b) Malleability They are malleable, they can be drawn into sheets. Exception - zinc They are non-malleable. Exception - Carbon fibre

(c) ductility They are ductile, they can be drawn into wires. Exception - zinc, mercury They are non-ductile. Exception - Carbon fibres.

(d) tensile strength They have high tensile strength. Exception - zinc, mercury They have low tensile strength. Exception - Carbon fibres

(e) Sonority They are sonorous. They are not sonorous.

(f) Conduction of heat and electricity They are good conductors of heat and electricity. They are poor conductors of heat and electricity.

(g) Melting and boiling point They have a high melting and boiling point. Exception - Sodium, potassium, mercury They have a low melting and boiling point. Exception - carbon, silicon

(h) Density They have high density. Exception - sodium, potassium, calcium They have low density. Exception - graphite

2.Metals are dense, shiny, good conductors of heat and electricity, and easily lose electrons in chemical reactions. Nonmetals are not dense, dull, do not conduct heat and electricity, and tend to gain electrons. Metalloids are elements that have properties of both metals and nonmetals.

3.. Gold, Platinum and silver are used as jewelleries and ornaments.

2) Iron and steel are used for construction purpose.

3) Aluminium, steel are used as utensils.

4) Mercury is used in thermometer and helps to check the temperature.

5) Aluminium are used as insulation wires.

4...Oxygen is used for breathing.  

2] Chlorine is used for purifying water.  

3] Phosphorous is used in crackers.  

4] Non - metals like nitrogen is used in fertilizers.  

5] Graphite is used as a good conductor of electricity.  

hope it helps you

Answer 2

Answer:

1. a) Physical Properties of Metals    

1.    Shiny (lustrous) in nature
2.    Metal is a good conductor of electricity and heat
3.    Density and melting point is high
4.    Mouldable (Malleable)
5.    Ductile
6.    At room temperature, it is in solid form except for mercury
7.    Opaque

1. b) Physical Properties of Non-metals    

1.    Poor conductors of electricity and heat
2.    Non-Ductile metals
3.    Brittle solids
4.    Maybe solids, liquids or gases at room temperature
5.    These are not sonorous
6.    Transparent

2. Chemical Properties of Metals

1.    Easily corrodible ( Iron rusting with reaction to humid )
2.    Can lose electrons (while heating )
3.    Form basic oxides
4.    Have low electronegativities
5.    Good reducing agents

3. Uses of Metals

1. Iron metal used in railroads and other major industries
2. Aluminium metal used in building Aircrafts due to its lighter weight and strength
3. Copper metal used in many heating containers and electrical wires as it is good conductor of heat and electricity.
4. Gold , metal used to make ornaments due to it attractive look.
5. Steel, metal used in making attractive fencing , plates and other durable products.

4. Uses of Non-Metals

1.    For the preparation of ammonia, nitric acid and fertilizers, nitrogen is used.
2.    For the purification of water, chlorine is used.
3.    Hydrogen is very useful as rocket fuel.
4.    Carbon can be used to make pencils when it is in the graphite form.
5.    Sulphuric acid is prepared using sulphur.