Question

warm up 11/10 + 11/12
label the parts of the
graph where:
a) thermal energy (e_th)
is increasing.
b) phase energy (e_ph) is
increasing.

Explanation:

Part A

• Thermal energy (\(E_{th}\)) is related to the temperature of a substance. When temperature increases, thermal energy increases.
• In the graph, the temperature is increasing in the intervals \(A - B\), \(C - D\), and \(E - F\). So, in these intervals, thermal energy (\(E_{th}\)) is increasing.

Part B

• Phase energy (\(E_{ph}\)) is related to the phase change of a substance. During phase change, temperature remains constant.
• In the graph, the temperature is constant in the intervals \(B - C\) and \(D - E\). So, in these intervals, phase energy (\(E_{ph}\)) is increasing.

Answer:

A. \(A - B\), \(C - D\), \(E - F\)
B. \(B - C\), \(D - E\)