Fireworks!

Firecrackers!

Gunpowder▪ 75% potassium nitrate (oxidizer)▪ 15% charcoal or sugar (for carbon fuel)▪ 10% sulfur (to moderate reaction)

Paper wrapper▪ Burning creates carbon dioxide & nitrogen

gas▪ Wrapper explodes and creates a *bang*

Sparklers!

Four components Fuel (charcoal/sugar) Oxidizer (KNO3) Metal powder/flakes▪ Create color and sparks▪ By glowing or burning

▪ Aluminum, steel, zinc, iron Binder (sugar or starch)▪ Holds everything together on the stick

Color!Color Compounds

Strontium salts, lithium salts SrCO3 or Li2CO3

Calcium Salts CaCl2, CaSO4xH2O

Incandescence of iron (with carbon) or charcoal

Sodium compounds NaNO3, Cryolite – Na3AlF6

White-hot metal Mg, Al, BaO

Barium compounds and a chlorine producer BaCl+

Copper compunds + chlorine producer copper acetoarsenite, CuCl

Mix red and blue compounds (strontium and copper)

Burning Al, Ti, or Mg (powder or flakes)

Color!Color Compounds

Red Strontium salts, lithium salts SrCO3 or Li2CO3

Orange Calcium Salts CaCl2, CaSO4xH2O

Gold Incandescence of iron (with carbon) or charcoal

Yellow Sodium compounds NaNO3, Cryolite – Na3AlF6

Electric White White-hot metal Mg, Al, BaO

Green Barium compounds and a chlorine producer BaCl+

Blue Copper compunds + chlorine producer copper acetoarsenite, CuCl

Purple Mix red and blue compounds (strontium and copper)

Silver Burning Al, Ti, or Mg (powder or flakes)

Aerial Fireworks!

Firecrackers Explosion, noise

Sparklers Light, colors

Shell launched by a mortar

Aerial Fireworks Continued…

Shell has four components▪ Fuse▪ Container▪ Bursting charge▪ Stars

Mortar launches shell into the air▪ Lifting charge▪ Or compressed air

Sources

http://www.youtube.com/watch?v=G5R-F1RmL5Y&feature=endscreen

http://en.wikipedia.org/wiki/Fireworks http://

chemistry.about.com/od/howthingswork/a/fireworks.htm

http://chemistry.about.com/od/historyofchemistry/a/fireworkhistory.htm

http://chemistry.about.com/od/fireworkspyrotechnics/a/fireworkcolors.htm

http://science.howstuffworks.com/innovation/everyday-innovations/fireworks.htm