Copper Flame

Strontium Flame

Zinc Nitrate Flame

Potassium Nitrate Flame

Calcium Flame

Lithium Nitrate Flame

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

As electrons get excited with heat they raise in energy level. When they come back down they emit photons, each in a different colour depending on the element.