ppt for grade 7 science matatag curricul

Electrochemistry is the branch of chemistry that studies the relationship between electricity and chemical reactions. A galvanic cell (or voltaic cell) is an electrochemical cell that converts chemical energy into electrical energy through a spontaneous redox reaction. In this experiment, we will use a lemon or potato as an electrolyte to create a simple battery. The lemon or potato contains natural acids (citric acid or phosphoric acid) that allow the movement of ions. When a zinc nail (anode) and a copper coin (cathode) are inserted into the lemon or potato, they act as electrodes. The chemical reaction between the metals and the electrolyte generates a small electric current, which can be used to power an LED or a buzzer.

1. PERFORMANCE TASK 3 rd QUARTER At SMCBI we S erve , M otivate , C reate , B elieve , I nnovate

2. ECO-WHEEL

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