Question

multiple choice 10 points the high heat of vaporization of water helps you to feel cooler when you sweat because the transition of water from a liquid to a gas requires a ____ of energy to break hydrogen bonds. the energy is ____ from heat produced by your body, thus helping to lower the surface temperature of your body. options: input; released, release; released, release; obtained, input; obtained

Explanation:

To solve this, we analyze the process of water vaporization (liquid to gas) and energy transfer:

1. Phase Change Energy Requirement: Vaporization (liquid → gas) is an endothermic process, meaning it requires an input of energy to break hydrogen bonds in water.
2. Energy Source for Cooling: For sweat to evaporate, this energy is obtained from the body’s heat (kinetic energy of body molecules). Absorbing this heat lowers the body’s surface temperature, creating a cooling effect.

Now, evaluate the options:

• "input; released": Incorrect (energy is absorbed, not released).
• "release; released": Incorrect (vaporization needs energy input, not release).
• "release; obtained": Incorrect (first term should be "input").
• "input; obtained": Correct (matches the endothermic nature of vaporization and energy absorption from the body).

Answer:

D. input; obtained (assuming the options are labeled A - D as per standard multiple - choice, with the last option being "input; obtained")