FERMENTATION ACTIVITY

This practical can be done as a demo or class experiment provided you have enough materials for the whole class.


Fermentation is the process of breaking down of food by micro-organisms using anaerobic respiration. Yeast is a single-celled fungus, and reproduces by growing buds out of the cell and feeds itself on sugars like glucose. In the process of fermentation, the yeast makes alcohol (Ethanol) and carbon dioxide. To illustrate it better, consider the equation below


The Equation:


GLUCOSE --> ETHANOL + CARBON DIOXIDE

HOW TO COLLECT and TEST OXYGEN, HYDROGEN, and CARBON DIOXIDE

One of the most challenging tasks of a science teacher in a chemistry class is how to show that gases exist and it can be collected from simple reactions. Most common amongst these gases are OXYGEN, HYDROGEN, and CARBON DIOXIDE.