The bubbles produced in this experiment are likely to contain - oxygen - VCE - SSCE Biology - Question 10 - 2020 - Paper 1

In this experiment, we are looking at the by-products of a particular chemical or biological process. Bubbles are typically formed during metabolic reactions, such as photosynthesis or fermentation. Through this understanding, we can conclude that the bubbles are likely to contain:

1. Oxygen: Depending on the specific experiment, oxygen is commonly produced as a by-product during photosynthesis, where water and carbon dioxide are converted into glucose and oxygen.
2. Glucose: However, glucose itself is not a gas and would not be found in the bubbles. Instead, it is an end product, primarily in the context of biological experiments.
3. Water Vapour: Water vapor can be present if the temperature of the reaction is elevated or if vaporization occurs.
4. Carbon Dioxide: This gas can also be a by-product of various processes, particularly fermentation, where sugars are converted into alcohol and carbon dioxide.

Thus, the content of the bubbles includes primarily oxygen and carbon dioxide, while glucose would not be present in a gaseous form.