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.
Categories: Teacher Demonstration
This activity demonstrates the use of carbon by an aquatic plant. The process of photosynthesis can be represented by the reaction: CO2 + H20 + light _ C6H12O6 + O2. There are two distinct steps: the... read more
This activity allows students to explore the composition of the candy Pop Rocks by observing the reactions that take place when Pop Rocks are placed in water. read more
In this activity, student mix a given quantity of salt with a fixed volume of water. Mass and volume measurements are made before and after mixing to determine if these quantities change. Students... read more