Question 1: Why are fireworks colorful? In fact, it is similar to firecrackers, and the 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, which appears before our eyes. Adding some luminescent agents and color developers in the process of making flowers can make fireworks emit colorful colors. The luminescent agent is powder of metallic magnesium or metallic aluminum. These metals give off incandescent light when they burn. Chromophores are actually just some metal compounds. Metal compounds contain metal ions. When these metal ions burn, they will emit a unique flame color. Different kinds of metal compounds will emit different colors of light when burning. For example, sodium chloride and sodium sulfate are sodium compounds, which will emit a golden flame when burned. Similarly, when calcium nitrate and calcium carbonate burn, they will emit a brick-red flame. In chemistry, we often use the above results to test the metals contained in substances. This type of experiment is called flame test. 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, colorful patterns can bloom in the dark sky.

Question 2: Why do fireworks burn different colors with different metal colors? Fireworks contain different metal elements, so they burn in different colors.

Question 3: Why are fireworks colorful? What raw materials are used? Metals burn in different ways in flame reaction.

Question 4: How did the beautiful and colorful fireworks show come into being? There is a lot of metal powder in it. Different metals burn to produce different colors. For example, copper is green.