1. Cosmic Origin- Where Did Gold Come From?
Gold was formed through neutron star collisions and supernova explosions billions of years ago. These extreme cosmic events created heavy elements like gold before Earth even formed.
2.Atomic Structure
Gold’s chemical symbol is Au (from Latin Au-rum).
Atomic number: 79.
It has 79 protons in its nucleus.
3.Density
Gold is extremely dense.
Density: 19.32 g/cm³
This is why gold feels heavy even in small quantities.
4.Malleability
Gold is the most malleable metal known.
1 gram can be hammered into a sheet covering nearly 1 square meter.
5.Ductility
Gold is highly ductile.
1 ounce can be drawn into a wire about 80 km long without breaking.
6.Corrosion Resistance
Gold does not oxidize in air or water.
It does not rust because it does not react with oxygen.
7.Electrical Conductivity
Gold is an excellent conductor of electricity and does not corrode,
making it ideal for microchips and connectors.
8.Reflectivity
Gold reflects infrared radiation very effectively,
which is why it is used in spacecraft thermal shields.
9.Alloy Formation
Pure gold (24K) is soft, so it is mixed with copper, silver,
or nickel to increase strength.
10. Chemical Stability
Gold does not dissolve in most acids.
It dissolves only in a special mixture called aqua regia.
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