Chemistry of Fireworks

2. – The solid or liquid chemical that burns to release energy.
7. – The colour seen when copper ions are excited in fireworks.
9. – The process that excites electrons and creates light — happens when atoms are ________.
12. – This metal produces green fireworks and is also used in flares.
13. – Scientists are developing these to replace traditional fireworks for a cleaner show.
14. – The process where a substance reacts rapidly with oxygen, releasing heat and light.
15. – A purple-coloured firework often contains salts of this element.
18. – The outer container that holds all parts of the firework together.
19. – Tiny coloured pellets that burst and produce light and colour in the sky.
20. – When an electron absorbs heat, it moves to a higher __________ level.

1. – The colour of the highest-energy visible light.
3. – The type of reaction fireworks depend on — it gives off heat.
4. – A metal that gives fireworks a deep red colour.
5. – The part of the firework that ignites the whole reaction — like a timed spark.
6. – Fireworks can release harmful particles into the air, leading to this type of pollution.
8. – The coloured light seen from excited atoms is caused by the release of _________.
10. – This element gives fireworks a bright yellow colour — also found in table salt.
11. – The first fireworks were invented in this country about 2,000 years ago.
16. – A chemical that provides oxygen so fuel can burn — fireworks rely on this.
17. – The invisible energy form carried by light waves.