6. Thermochemistry
Energy Of Phase Changes — Quiz
Test your understanding of energy of phase changes with 5 practice questions.
Practice Questions
Question 1
What is the name for the energy required to change a substance from a solid to a liquid at its melting point without changing its temperature?
Question 2
When water freezes, what is true about the sign of $\Delta H$ for the phase change?
Question 3
Why does the temperature of a pure substance remain constant during a phase change such as melting or boiling?
Question 4
What quantity is used to calculate the heat needed to change the temperature of a substance without changing its phase?
Question 5
Which phase change requires the greatest input of energy per mole for water?