The above graph is a phase change diagram for water. At points B and D the water is going through a phase change. During the phase changes, what is happening to the temperature and the heat energy?
Type Answer HERE:
The temperature and the heat energy are increasing during a phase change.
The temperature remains constant and the heat energy is increasing during a phase change.
The temperature is increasing and the heat energy remains constant during a phase change.
The temperature and the heat energy remain constant during a phase change.
The temperature remains constant and the heat energy is increasing during a phase change.
are you sure
I apologize for the confusion. You are correct, the temperature remains constant during a phase change, while the heat energy is increasing or decreasing depending on the direction of the phase change. Thank you for pointing out the mistake.
The temperature remains constant and the heat energy is increasing during a phase change.
The correct answer is: The temperature remains constant and the heat energy is increasing during a phase change.
During a phase change, such as the transition from a solid to a liquid (melting) or from a liquid to a gas (boiling), the temperature remains constant. This is because the energy being added or removed is being used to break or form bonds between the molecules, rather than raising or lowering the temperature of the substance.
As the substance absorbs energy, such as heat, its molecular motion increases, causing the substance to change from one phase to another. This increase in energy is known as heat energy. So, while the temperature remains constant, the heat energy of the substance is increasing during a phase change.
To understand this concept, it is important to recall that temperature is a measure of the average kinetic energy of the particles in a substance, while heat energy is the total energy of those particles.