LiNO3 -> Lithium Nitrate Flame

Cu(NO3)2 -> Copper (II) Nitrate Flame

KNO3 -> Potassium Nitrate Flame

Sr(NO3)2 -> Strontium Nitrate Flame

Zn(NO3)2 -> Zinc Nitrate Flame

Ca(NO3)2 -> Calcium Nitrate Flame

Putting atoms into a flame adds energy to its outer electrons (from nucleus) and pushes them into other orbitals. The “excited” electrons will then go back to where they originally were, so they release the energy they stored up as particles of light, called photons.The color of the light produced depends on the energies of the photons emitted, which are determined by the energies required to move electrons from one orbital to another.