Praktikum Ciri Ciri Reaksi Kimia

Summary

In this chemistry tutorial, the speaker demonstrates three engaging experiments that highlight key reactions in chemistry. The first experiment explores the reaction of lime (Ca(OH)2) with sodium bicarbonate (NaHCO3), producing a visible precipitate. The second experiment investigates color changes in a solution when exposed to various substances, including baking soda and vinegar, which result in different hues based on the solution's acidity. The third experiment involves the reaction between sodium bicarbonate and vinegar, leading to gas formation that inflates a balloon. The tutorial is both educational and hands-on, explaining the reactions and the chemistry behind them in a simple yet effective manner.

Takeaways

• 😀 The session begins with a greeting in Arabic: 'Assalamualaikum warahmatullahi wabarakatuh'.
• 😀 The focus of the lesson is on chemistry, specifically conducting practical experiments to demonstrate chemical properties.
• 😀 The first experiment involves mixing substances like calcium hydroxide (CaOH2), water, and a spatula of solid material.
• 😀 A key tool for the first experiment is a portal and a specific substance, Jess candy, for the second experiment.
• 😀 In the second experiment, materials such as baking soda, water, and vinegar are used, alongside identifying the reactions of these substances.
• 😀 The reaction in the second experiment is observed using a color-changing indicator, showing how the solution reacts to different substances.
• 😀 The third experiment involves using sodium bicarbonate (NaHCO3), water, and vinegar to create a reaction that inflates a balloon.
• 😀 The balloon inflates as a result of the chemical reaction, producing a gas that causes the expansion.
• 😀 After conducting the experiments, the teacher explains the reactions in detail, starting with the formation of calcium carbonate (CaCO3) and its precipitation.
• 😀 The reactions also involve color changes due to pH indicators, with solutions becoming more blue as they become more alkaline.
• 😀 The lesson concludes with an explanation of why certain reactions produce gas and expand the balloon, providing a scientific rationale for the experiments.

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