NextX Fruit Battery Science Experiment Kit with Electronic Clock for Kids Teens STEM Educational Toys for School Science Project Education Subject

46 pieces experiment kits give your child more fun! Age: 8+ Material: Plastic + Metal Note: Children should play under parents or teacher's supervision. Functional characteristics: You can use natural materials like fruits, vegetables, mud and salt water to create many unusual green batteries. Package List: Instructions × 1 digital clock ×1 LCD display clock × 1 LED lighthouse × 1 sound chip × 1 paper cup × 1 protective covers × 2 transparent stickers × 2 bottle caps × 3 plastic cups × 8 connection wires × 8 circuit boards (copper) × 9 circuit boards (magnesium) × 9 WORKING PRINCIPLE The green battery works by immersing a pair of connected zinc and copper plates into an aqueous medium such as a potato, mud, water, or a piece of fruit. The zine plate is the negative electrode and the copper plate is the positive electrode. Chemical reaction happens when metal is immersed in electrolyte. The acid in the electrolyte breaks down the atomic structure of the copper and zinc, causing individual electrons to be released. zinc is a more reactive metal than copper so it generates electrons faster than copper in this chemical process. The excess electrons flow from the zine plate to the copper plate. This flow of the electrons is strong enough to power a small light bulb, a small watch or a sound chip.