This activity involves the surprising neutralization reactions between the carbonic acid that forms when the carbon dioxide in one’s breath reacts with water and calcium hydroxide.
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Teacher Demo: Water Quality Investigation
Categories: Teacher Demonstration
This demonstration shows some differences between potable (drinkable) water and non-potable (non-drinkable) water. Variations in temperature, turbidity and pH level also determine the types of... read more
Teacher Demo: Osmosis Across a Semi-permeable Membrane
Categories: Teacher Demonstration
Osmosis, the movement of a solvent (usually water) across a semi-permeable membrane from an area of higher solvent concentration to an area of lower solvent concentration, is key in the maintenance... read more
Teacher Demo/Student Activity: Potato Osmosis
Categories: Lab/Student Activity, Teacher Demonstration
Osmosis is the process by which the concentrations of two solutions, separated by a selectively permeable membrane, equalize by the movement of a solvent such as water. This demonstration shows that... read more