An unknown substance is heated from 10 °C to 25 °C. The table below shows the state of the substance at different temperatures. Time (minutes) Temperature (degrees Celsius) State of matter 0 10 Liquid 2 15 Liquid 4 20 6 20 8 20 10 23 Gas 12 25 Gas Which statement is correct about the unknown substance? Its boiling point is 20 °C. Its boiling point is 15 °C. The substance sublimes at 15 °C. The substance exists as a solid at 20 °C. Question 16(Multiple Choice Worth 4 points) (05.03 LC) What most likely happens when water vapor cools? It changes into gas. It changes into liquid. Its temperature increases. Its temperature remains constant. You must check the box below prior to submitting your exam! Check this box to indicate you are ready to submit your exam Explorer Toolbox Workload My Folders Current course: 4565 Instructors monitor ALL areas of a student's account Student e-mail accounts are to be used for FLVS course-related email only and not for general introductions or spamming of people in your address book. Please remember to click the Logoff link when you have completed your work in the course. FDK381.10 Previous QuestionNext Question