Question

Which is the best interpretation of the two flat portions of the graph

A. These show where kinetic energy is increased

B. These show where temperature is at 0 Celsius

C. These show where thermal energy does not exist

D. These show were changes of state are occurring​

Answer 1

since Y axis is the temperature axis, flat portion meaning that there is no increase in temperature. and in this section, what’s happening is only change of state. at 0 degrees ice (solid water) is changing into liquid water. and at 100 degree, liquid water is changing to water vapor

Answer 2

b

Step-by-step explanation: