Wednesday, 15 August 2012

基礎化學實驗技能(11):量筒






Graduated cylinder








so we had an experiment this morning, it's called the elephant toothpaste. materials needed: graduated cylinder, hydrogen peroxide (30% sol), potassium iodide, liquid soap, food coloring basically, mix everything. what we did was pour the hydrogen peroxide the last. be prepared for a mess! and it's an exothermic reaction

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