Brilliant fireworks

By firing fireworks of different colors, understand the principle of flame color reaction. The exhibit mainly consists of fireworks firing cannon models, touch screens, and wall projections. Through the desktop touch screen, viewers can design and select elements for fireworks display. They can drag the projectile into the magazine, pull the firing rod and release it, and the projectile will be projected onto the projection. On the projection, fireworks of different colors will bloom, and there will also be a sound effect of fireworks blooming. Target audience: Adolescents aged 6-15. Interactive multimedia device operation instructions (audience experience) 1 Visitors place shells with different chemical element compositions into the magazine slot through the desktop touch screen and press the launch button; 2. Watch the shells projected onto the wall and fireworks of different colors will bloom; 3. Understand the flame color reaction principles of different elements corresponding to fireworks of different colors. Describing the intrinsic connections between storylines and exhibits in chemistry.

Interaction type: Interactive multimedia installation. The unit is designed for unsupervised public use: controls are recessed or shielded, moving parts are enclosed, and the interface is operable by a child of about six with no instruction. Where a screen is used, the language can be switched without changing the hardware, and the content can be replaced on site.

Many metal elements or their compounds, when burned on a flame, will cause the flame to exhibit a special characteristic color, called flame color reaction, which is a special property possessed by alkali metals and alkaline earth metals. Flame reaction is a physical change. During flame color reactions, electrons in metal elements absorb energy, transition to more unstable high energy levels, and then spontaneously transition back to lower energy levels, emitting photons of different energies, that is, light of different wavelengths, thus producing different flame colors. Due to the absence of chemical bond breakage and formation during the process, the material structure and chemical properties of metal salts do not change. Reference materials.