What is It Find out if you have discovered and understood the important concepts of the lesson, you will be asked to answer the following questions below. 1. Which liquid sample is a substance? Table 1: Boiling point of two liquid samples Temperature Observation while heating Samples Liquid A Liquid B 2. Which solid sample is a substance? Scenario 1: Melting point of two solid samples Appearance Observation while melting Samples Solid A Solid B During boiling, the temperature of a mixture is different at different times. During melting, a mixture has portions that seem to be not melting,​