Colors in Fireworks

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Across
  1. 2. Produces both light and sound effects
  2. 4. Part of the firework that makes the amazing display
  3. 5. Salts These reacts with metal oxides to produce an array of colors
  4. 8. A device containing gunpowder and other chemicals that causes an explosion when ignited
Down
  1. 1. Excites the metal particles so they can emit light
  2. 3. A hollow sphere made of pasted paper and string which is cut in half and packed with stars
  3. 4. The excess energy from these gets emitted as light when they go back down to their lowest energy state
  4. 6. Charge This is inside the middle of the shell to ignite the firework
  5. 7. Container of the firework