Question

A student is investigating factors that affect the rate of dissolution. For the investigation, the student performs two experiments.

For the first experiment, the student fills two beakers with 100 mL of water that have a temperature of 20°C. The student adds a 4-gram sugar cube to Beaker 1 and stirs until the sugar cube has dissolved. The student adds 4 grams of granular sugar to Beaker 2 and stirs until it has dissolved. The student performs three trials of each, observing, in seconds, how long it takes the sugar to completely dissolve. The table shows the results.

Beaker 1 (Cube) Beaker 2 (Granular)
Trial 1 32 s 20 s
Trial 2 34 s 23 s
Trial 3 31 s 22 s
For the second experiment, the student fills three beakers with 100 mL of water. Beaker 1 contains cold water, Beaker 2 contains room-temperature water, and Beaker 3 contains hot water. The student adds a 4-g sugar cube to each beaker and stirs. The student performs three trials of each, observing, in seconds, how long it takes for the sugar to completely dissolve. The table shows the results.

Beaker 1 (Cold) Beaker 2 (Room-temperature) Beaker 3 (Hot)
Trial 1 440 s 120 s 95 s
Trial 2 450 s 131 s 90 s
Trial 3 446 s 128 s 97 s
34.
What would MOST LIKELY happen if the student did not stir the sugar in both experiments?