are fire work a physical or chemical change?

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are fire work a physical or chemical change?

2007-11-11 03:19:38 · 3 answers · asked by ? 2 in Science & Mathematics ➔ Chemistry

3 answers

Fire is both a physical and an chemical change..

Assuming you are burning wood.. Chemical because the carbon - hydrogen bonds are broken.. and physical because gasses are given off.. and the physical appearance changes..

Jim

2007-11-11 03:27:10 · answer #1 · answered by Attorney 5 · 0⤊ 0⤋

Fireworks are made of various salts which give off color when energized in an explosion.

Can you put the fireworks back to salts again? If not, it is a chemical change.

2007-11-11 03:27:29 · answer #2 · answered by reb1240 7 · 0⤊ 0⤋

Its both.

You burn wood, and it chemically changes (into ashes) and physically changes form (into ashes)...

2007-11-11 03:27:23 · answer #3 · answered by chocolahoma 7 · 0⤊ 0⤋