This demonstration reviews the concept of density. It examines why certain objects float or sink in water and highlights some interesting information about cola versus diet cola soft drinks.
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Student Activity/Teacher Demo: Spinning Dish
Categories: Lab/Student Activity, Teacher Demonstration
In this demo, two polyethylene strips are charged on one end by rubbing with wool. One charged strip is then mounted on an evaporating dish and the other charged strip is used to make the dish spin.... read more
Teacher Demo: Mouldy Bread Demonstration
Categories: Teacher Demonstration
This demonstration shows how water can affect the growth of bread mould. read more
Teacher Demo/Student Activity: Powder Disaster
Categories: Lab/Student Activity, Teacher Demonstration
Flour is an ingredient that is found in most kitchens and used regularly for baking and cooking. Consequently, it is considered safe, and people do not regard the potential hazards. In reality, flour... read more