Question

Why Gold and silver are used to make jewellery ?

Answer 1

Gold and silver are very less reactive and do not corrode easily! To dissolve them, only a solution called Aqua Regia (Hydrochloric acid 'HCl' and Nitric Acid 'HNO3' in 1:3 ratio) is used. Also they don't oxidize(rust) for a long time. They may tarnish but don't not permanantly. Hence they are used!

If you find this answer useful, mark this the brainliest! Thank you

Answer 2

Gold, Silver, Platinum are used for making Jwelleries. Because they are very precious. And, Only Rich people can afford it. So, Gold, silver, platinum , diamond is used in Jwelleries.

Diamonds are used for making jwelleries because, Diamond is one of the rarest substance found in nature. As it is so Hard and expensive, so only rich people can afford it. Therefore, Diamond is used for making Jwelleries.

Diamond: Diamond is a crystalline form of Carbon; Which is found in purest and hardest state of matter. Diamond is a brilliant and Hard substance. Diamond is tetragonal shaped because of it's carbon structure. Each carbon on diamond is attached to it's neighboring 3 carbon atoms, this makes the diamond Tetra shaped.

Uses of Diamond:

i)  Diamond is used in ornaments and decoration.

ii) Diamond is used for Glass cutting and rock drilling machines.

iii) Diamond is used in making eye surgery knives.

iv) Diamond dust is used for polishing of other diamonds.

v) Diamonds is used in Space-crafts and Satellites to prevent radiations.

Property of Diamond:

i) Density of Diamond is 3.5g/cm^3

ii) Melting point of diamond is 3500 degree Celsius.

iii) There is no effect of Acids and bases on diamond.

iv) Diamond doesn't dissolve in any solvent.

v) Diamond is bad conductor of electricity; As it does not have free electrons.

vi) When diamond is heated at 800 degree Celsius in presence of oxygen, then only it released the CO2.