Question

Which best explains why a firework being ignited is an example of an exothermic reaction and not an endothermic reaction?

The fireworks produce colors.
The fireworks give off heat.
Igniting the fireworks requires energy.
Igniting the fireworks makes an odor.

Answer 1

Answer:

....

Explanation:

question no. 1

In case of reaction happening during ignition of the firework, a huge amount of energy is released in the form of heat, light, and sound. As heat is released it is considered as an exothermic chemical reaction

question no. 2

The colors are produced by heating metal salts, such as calcium chloride or sodium nitrate, that emit characteristic colors. List of colors and elements in Fireworks: Aluminum – Aluminum is used to produce silver and white flames and sparks.

question no. 3

When fireworks explode in the sky, the gunpowder reactions create a lot of heat, causing the metallic substances pres- ent in the stars to absorb energy from the heat and emit light. ... This light is produced by electrons inside the metal atoms

question no. 4

don't know

question no. 5

Well thats what sulfur smells like and the black powder contains sulfur. That's why when you smell the air after a firework is lit it's smells like rotten eggs! Fireworks contain small amounts of explosives that blow up!