How are fireworks coloured?

• Fireworks have been used by man for thousands of years.

• They had their beginnings in China and gradually spread through the East.

• It is believed that the crusaders brought fireworks to Europe in the 13th century.

• The colours in fireworks are produced by the metal salts used in the explosive.

• Copper makes blue; barium green, sodium green and strontium red.

Thanks for reading!!

source: google images