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乳浊液的演示试验如按初中化学教材第133页的做法,由于植物油和水的颜色相近,学生很难观察到“小液滴”和静置后油与水的分界
Emulsion demonstration experiments, such as according to junior high school chemistry textbook practice 133, due to the similar color of vegetable oil and water, students can hardly observe the “small droplets” and the separation of oil and water after standing.