Thermal energy (heat)
bar graph
A line graph.
graph
if you are graphing a change over time, a line graph. if you are comparing data, it's a bar graph.
A line graph shows change over a period of time.
endothermic
Heat energy. Internal energy
bar graph
A line graph.
graph
It would be a phase change.
Physical change
phase change
Right-click on the graph and select Change Chart Type.
line graphThe most preferred type of graph to use for change over time is the line graph.
For example, when ice is melting, the absorbed thermal energy is used to change the phase of the substance - a type of potential energy.
A Phase Change.