Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

Students will be able to explain that if two substances cause turn a pH indicator different colors, they must be different substances. Students will be able to explain that the color that a substance ...

Murky green algal blooms are more than a major eyesore; they reveal that a body of water could be unsafe for swimming or drinking. Currently, however, there isn't an effective warning system for ...

A surplus of phosphorus in freshwater systems causes algae, such as phytoplankton and cyanobacteria, to grow out of control, turning the water into a “pea soup” of these organisms. Blooms can threaten ...