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A diagram of a potato battery experiment with a nail and copper coin stuck in a potato, connected by wires to light up an LED. Text describes the setup and questions if electricity can be produced from a potato.

BATATAS ELÉTRICAS Feira de Ciências – 7.º Ano ⚡ Será possível produzir eletricidade com uma batata? Hipótese A batata pode produzir eletricidade porque permite o movimento de eletrões entre dois metais diferentes. 🧪 Materiais utilizados * 🥔 1 batata * 🔩 1 prego de zinco * 🪙 1 moeda de cobre * 🔌 Fios elétricos * 💡 1 LED 🔬 Como fiz 1. Coloquei o prego de zinco na batata. 2. Coloquei a moeda de cobre na batata. 3. Liguei os fios aos dois metais. 4. Conectei ao LED até formar um circuito fechado. ⚙️ O que aconteceu? * Zinco (–) → liberta eletrões * Cobre (+) → recebe eletrões Os eletrões passaram pelos fios e produziram corrente elétrica suficiente para acender o LED. 📖 Explicação Científica Este sistema funciona como uma célula eletroquímica. O zinco sofre oxidação e liberta eletrões: Esses eletrões viajam pelos fios até ao cobre, criando um circuito elétrico. A batata funciona como um eletrólito, permitindo o movimento de iões e ajudando a transformar energia química em energia elétrica. ✅ Conclusão Foi possível produzir eletricidade com uma batata. A experiência mostrou que materiais simples podem gerar corrente elétrica através de reações químicas entre diferentes metais. 💡 Curiosidade Uma única batata produz pouca energia, mas várias batatas ligadas em série podem gerar uma corrente elétrica maior! Mehr sehen

#science #education #experiment

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