Would evaporation be a cooling process if molecules of every speed had an equal chance to escape from the liquid surface? Yes, because the energy distribution would remain constant No, because then the molecules left behind wouldn't change in speed and there would be no change in the liquid's temperature Yes, because all molecules would escape equally, leading to cooling No, because the temperature of the liquid would increase

No, because then the molecules left behind wouldn't change in speed and there would be no change in the liquid's temperature

If the water level in a dish of water remains unchanged from one day to the next, can you conclude that no evaporation or condensation has occurred? Yes, because no change in water level means no phase change Yes, because the water is in a closed system No, the equal water level just shows that there are equal rates of evaporation and condensation occurring No, because evaporation could still occur without condensation

No, the equal water level just shows that there are equal rates of evaporation and condensation occurring

Why does dew form on the surface of a cold soft drink can? The can's surface attracts water molecules from the air Water vapor in the warm air chills when it makes contact with the cold can, slowing down and sticking The can absorbs moisture from the air due to its cold temperature The can releases cold air that condenses water vapor

Water vapor in the warm air chills when it makes contact with the cold can, slowing down and sticking

Since boiling is a cooling process, would it be a good idea to cool your hot and sticky hands by dipping them into boiling water? Yes, because boiling water cools down quickly Yes, because the steam will cool your hands No, cooling means that instead of getting hotter, it remains at 100ºC when boiling No, because boiling water transfers heat to your hands

No, cooling means that instead of getting hotter, it remains at 100ºC when boiling

When \[ H_2O \] in the vapor phase condenses, is the surrounding air warmed or cooled? The surrounding air is cooled as energy is absorbed The surrounding air remains unchanged The surrounding air is warmed as the vapor releases energy when changing to a liquid The surrounding air is cooled due to energy loss

The surrounding air is warmed as the vapor releases energy when changing to a liquid

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Physics - Thermodynamics

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Cards in this deck(10)

Would evaporation be a cooling process if molecules of every speed had an equal chance to escape from the liquid surface?

If the water level in a dish of water remains unchanged from one day to the next, can you conclude that no evaporation or condensation has occurred?

Why does dew form on the surface of a cold soft drink can?

Since boiling is a cooling process, would it be a good idea to cool your hot and sticky hands by dipping them into boiling water?

When \[ H_2O \] in the vapor phase condenses, is the surrounding air warmed or cooled?

How much energy is transferred when 1 g of steam at 100ºC condenses to water at 100ºC?

How much energy is transferred when 1 g of boiling water at 100ºC cools to ice water at 0ºC?

How much energy is transferred when 1 g of ice water at 0ºC freezes to ice at 0ºC?

How much energy is transferred when 1 g of steam at 100ºC turns into ice at 0ºC?

Suppose that 4 grams of boiling water is poured onto a cold surface and 1 g rapidly evaporates. If evaporation takes 540 calories from the remaining 3 grams of water and no other heat transfer takes place, what will be the temperature of the remaining 3 grams?

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Chapter 17

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