The investigation was done at 20^circ C How would the mass of water lost be different if the investigation was done at 25^circ C Give a reason for your answer. [2 marks Difference Reason

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The investigation was done at 20^circ C How would the mass of water lost be different if the investigation was done at 25^circ C Give a reason for your answer. [2 marks Difference Reason

Answer 1

Difference: The mass of water lost would be greater at \(25^{\circ} C\). Reason: Because the rate of evaporation increases with temperature, leading to a greater loss of water mass when the investigation is done at a higher temperature.

Answer 2

## Step 1: The process likely involves the evaporation of water, as mass loss in water typically occurs through this phase change. Evaporation is influenced by temperature; higher temperatures tend to increase the rate of evaporation. ## Step 2: At a higher temperature, water molecules have more kinetic energy, making it easier for them to overcome the forces holding them in the liquid and escaping into the air as gas. ## Step 3: Consequently, if the investigation is performed at \(25^{\circ} C\), the \(20^{\circ} C\) condition would have a slower rate of evaporation due to lower kinetic energy in the water molecules. ## Step 4: Therefore, performing the investigation at \(25^{\circ} C\) vs \(20^{\circ} C\) will result in a greater mass of water lost due to increased temperature and, subsequently, increased kinetic energy resulting in a higher rate of evaporation.

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The investigation was done at 20^circ C How would the mass of water lost be different if the investigation was done at 25^circ C Give a reason for your answer. [2 marks Difference Reason

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