Directions: Use the cooling curve below to answer the following questions. 130 110 IV 70 50 II 30 10 10 20 30 40 50 60 -10 -30 Heat Added (k) Photo credit https:/sites.gocgle.com/site/heatingandcoolingcurves/_frsrc/1299042706797/curveexplanation/HEATING%20CURVE.png 1. In which region(s) does temperature remain constant? 2. In which region(s) does temperature increase? 3. In which region(s) of the graph does a phase change occur? 4. In which region(s) of the graph would the substance only be in one phase? 5. In which region(s) of the graph would the substance be a solid only? 6. In which region(s) of the graph would the substance be a solid and a liquid? 7. In which region(s) of the graph would the substance be a liquid and a gas? 8. In which region(s) of the graph would the substance be a gas only? 9. In which region(s) of the graph does boiling take place? 10. In which region(s) of the graph does melting take place? Temperature (C)