Transition metals tend to form more coloured ions and compounds more than most other elements either in solid form or dissolved in a solvent like water. Examples of the colours of some transition metal salts in aqueous solution are shown below (grey = colourless in the diagrams).
Welcome to the Machine. Welcome to the Machine is the second song on Pink Floyd's 1975 album Wish You Were Here. Written by bassist Roger Waters, it features heavily processed synthesizers and acoustic guitars, as well as a wide range of tape effects. 1 Theme.
Best Answer: The original version of Knocking on Heaven's Door was written and performed by Bob Dylan. Many artists have covered the song including: * Guns N' Roses. * Eric Clapton. * U2. * Bruce Springsteen. * The Grateful Dead. * Bon Jovi.