Questions: Grace set 15 drinking glasses on her countertop. She poured the same amount of water into each glass, putting 40°F water into five glasses, 65°F water into five glasses, and 120°F water into five glasses. Then Grace added one teaspoon of sugar to each glass and measured the time it took the sugar to dissolve completely in the water. Identify the question that the experiment can best answer. Does water temperature affect the total amount of sugar that can be dissolved in water? When sugar is added to water, does the water's temperature affect the amount of time it takes the sugar to dissolve?

Grace set 15 drinking glasses on her countertop. She poured the same amount of water into each glass, putting 40°F water into five glasses, 65°F water into five glasses, and 120°F water into five glasses. Then Grace added one teaspoon of sugar to each glass and measured the time it took the sugar to dissolve completely in the water. Identify the question that the experiment can best answer. Does water temperature affect the total amount of sugar that can be dissolved in water? When sugar is added to water, does the water's temperature affect the amount of time it takes the sugar to dissolve?
Transcript text: My IXL Learning Assessment Analytics A. 4 Identify the experimental question M07 The passage below describes an experiment. glasses of water Grace set 15 drinking glasses on her countertop. She poured the same amount of water into each glass, putting $40^{\circ} \mathrm{F}$ water into five glasses, $65^{\circ} \mathrm{F}$ water into five glasses, and $120^{\circ} \mathrm{F}$ water into five glasses. Then Grace added one teaspoon of sugar to each glass and measured the time it took the sugar to dissolve completely in the water. Identify the question that the experiment can best answer. Does water temperature affect the total amount of sugar that can be dissolved in water? When sugar is added to water, does the water's temperature affect the amount of time it takes the sugar to dissolve? Submit
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Solution

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Solution Steps

Step 1: Understand the Experiment

Grace set up an experiment with 15 drinking glasses, each containing water at different temperatures (40°F, 65°F, and 120°F). She added one teaspoon of sugar to each glass and measured the time it took for the sugar to dissolve completely.

Step 2: Identify the Variables
  • Independent Variable: Water temperature (40°F, 65°F, 120°F)
  • Dependent Variable: Time taken for the sugar to dissolve
  • Controlled Variables: Amount of water, amount of sugar
Step 3: Determine the Experimental Question

The experiment is designed to measure the time it takes for sugar to dissolve in water at different temperatures. Therefore, the question that the experiment can best answer is:

"When sugar is added to water, does the water's temperature affect the amount of time it takes the sugar to dissolve?"

Final Answer

"When sugar is added to water, does the water's temperature affect the amount of time it takes the sugar to dissolve?"

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