Answer
In the first beaker, the observed bubbles are due to dissolved gases going out of solution (since most gases are less soluble at higher temperatures). In the second beaker, the bubbles are mainly due to boiling water (since water boils at 100 °C).
Work Step by Step
In the first beaker, the observed bubbles are due to dissolved gases going out of solution (since most gases are less soluble at higher temperatures). In the second beaker, the bubbles are mainly due to boiling water (since water boils at 100 °C).