Fireworks are also called fireworks, fireworks, fireworks and firecrackers. According to "China Fireworks and Firecrackers Standard-Safety and Quality", fireworks and firecrackers are defined as entertainment products that use pyrotechnics as raw materials and produce acousto-optic colors. Working people in China invented it earlier, and it is often used for grand ceremonies or performances. Fireworks are actually similar in structure to firecrackers, and they all contain black powder and medicine.

Chemical principle of fireworks

In fact, it is similar to firecrackers, and its structure contains black powder and medicine. After the fireworks are lit, a chemical reaction similar to the above causes an explosion, and most of the energy released during the explosion is converted into light energy. Adding some luminescent coloring agents in the process of making fireworks can make fireworks emit colorful colors.

Fireworks are made of this property of metal. Fireworks makers skillfully arrange and decide the order of burning. In this way, after the fireworks are detonated, bright and colorful patterns can bloom in the dark sky, which is often called flame reaction in middle schools.

Different kinds of metal compounds will emit different colors of light when burning. Both sodium chloride and sodium sulfate belong to sodium compounds, which will emit a golden flame when burned. Similarly, calcium nitrate and calcium carbonate will also emit brick-red flames when burning. In chemistry, the above results are often used to test the metals contained in substances. This type of experiment is called flame test.

Baidu Encyclopedia-Fireworks