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 microorganisms that can thrive in each water sample. After the demonstration, students will be able to hypothesize why different types of water can cause illnesses and even death in humans.
In this demonstration, students observe what happens to activated glow sticks when they are submerged in water at three different temperatures: cold, room temperature, and hot. Students will use... read more
Food labels often contain the word "fortified". This means that one or more ingredients have been added that are not normally found in that food item. The purpose is to increase the amount of that... read more
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