Se souvenir de moi
Come dive into the world of Walter White, the hero of the series Breaking Bad to better understand the chemistry of the 3 most known precious metals: Gold, Silver and Platinum !
In this article, we discuss simple and synthetically the following aspects :
Gold, silver and platinum are presented as above in the periodic table of elements. However, their chemical symbols hadn’t been agiven by chance. They come from their etymology !
It corresponds to the number of protons making up the nucleus of the atom (red). The number of protons also corresponds to the number of electrons orbiting around the nucleus of the atom.
We can therefore deduce that the atom is made up of :
These electrons are located in varying amounts in multiple layers (blue).
The density of a metal corresponds to its weight. It’s measured by atomic mass.
To sketch the explanation, let’s take a simple example. Imagine three containers of 1 liter capacity (a bottle for example), each filled differently with our 3 precious metals in the liquid state.
Given the density differences, and for the same volume (1 liter), we get the following observation on the scale.
The melting point corresponds to a temperature at which an item passes from the solid state to the liquid state. This temperature differs depending to metals.
The materials whose melting points are very high like platinum require specific material to melt, such as welding torch for example.