Question 2.CC.8: Using a Cooling Curve Using the cooling curve for water in F......
Using a Cooling Curve
Using the cooling curve for water in Figure 2.10b, identify the state or change of state for water as solid, liquid, gas, condensation, or freezing.
a. at 120 °C b. at 100 °C
c. at 40 °C d. at 0 °C
a. A temperature of 120 °C occurs on the diagonal line above the boiling (condensation) point indicating that water is a gas.
b. A temperature of 100 °C, shown as a horizontal line, indicates that the water vapor is changing to liquid water, or condensing.
c. A temperature of 40 °C occurs on the diagonal line below the boiling point but above the freezing point, which indicates that the water is in the liquid state.
d. A temperature of 0 °C, shown as a horizontal line, indicates that the liquid water is changing to solid (ice) or freezing.