Curated OER
Determination of Water Hardness
Students investigate water hardness. In this water hardness lesson plan, students determine the water hardness in 4 samples of water after buffering each. By using titration and an indicator, students can determine the amount of calcium...
Curated OER
Why is the Ocean Salty?
For this ocean salt worksheet, students read about the processes that have lead to the salt content in the ocean. Then students complete 5 short answer questions.