18 being boiled or Part I. Boiling point Study Table 4. In this setup two liquids were observed and heated. The data gathered is shown in the table below. Table 4: Hypothetical Boiling point of two colorless liquid samples Temperature in Celsius (C) Before After 4 After 8 After 12 After 16 After 20 SAMPLE heating minutes minutes minutes minutes minutes Liquid A 40 85 85 85 85 Liquid B 15 35 55 75 91 20 67 Guide Questions: 1. What do you notice about the temperature of the two sample liquids during boiling? Write your answer on Table 5. Table 5: Boiling point of two colorless liquid samples Sample Temperature Liquid A Liquid B 2. Which liquid sample is a substance? 3. Which liquid sample is a mixture? 4. How would you compare substance from mixture based on what you have studied on Table 4?
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GRADE 7​