Which of the following processes requires energy?Question 6Select one:Steam condenses inside the lid on a saucepan of boiling water.The melted wax hardens after a candle is extinguished.Water vapor forms ice crystals in the upper atmosphere.Gasoline spilled on the ground evaporates very quickly.Water condenses on the outside of a cold soda can.
Question
Which of the following processes requires energy?Question 6Select one:Steam condenses inside the lid on a saucepan of boiling water.The melted wax hardens after a candle is extinguished.Water vapor forms ice crystals in the upper atmosphere.Gasoline spilled on the ground evaporates very quickly.Water condenses on the outside of a cold soda can.
Solution
The process that requires energy among the options given is "Gasoline spilled on the ground evaporates very quickly."
Here's why:
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Steam condenses inside the lid on a saucepan of boiling water: This is a cooling process, where steam (which is water in gas form) loses energy to the environment and condenses back into liquid water. No energy is required for this process; instead, energy is released.
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The melted wax hardens after a candle is extinguished: This is a solidification process. When the candle is extinguished, the melted wax loses heat to the environment and solidifies. This process also releases energy, rather than requiring it.
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Water vapor forms ice crystals in the upper atmosphere: This is a process of deposition, where water vapor changes directly into ice without becoming a liquid first. This process also releases energy.
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Gasoline spilled on the ground evaporates very quickly: This is a process of evaporation, where the gasoline changes from a liquid to a gas. This process requires energy because the gasoline molecules need to gain energy to change from a liquid state to a gas state.
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Water condenses on the outside of a cold soda can: This is a process of condensation, where water in the air loses energy and changes from a gas to a liquid. This process releases energy, rather than requiring it.
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