James C. answered 07/27/21
Experienced (30+ years) high school physics teacher, conceptual to AP
Initially the added thermal energy raises the temperature of the ice from - 10 C to 0 C. Quantitatively, ΔQ = mcΔT.
At this point, added heat causes a change in phase, from solid to liquid, as the ice melts and becomes water at 0 degrees C. (ΔQ = m Hf)
Additional added heat increases the temperature of the liquid water from 0 C to 100 C. (ΔQ = mcΔT)
Added heat at this point causes a second phase change, from liquid to gas, as the water is converted to water vapor. (ΔQ = m Hv)
Finally, additional heat increases the temperature from 100 C to 110 C. (ΔQ = mcΔT)