Water Turbidity #10

Today, we also had presentations. It was pretty brutal watching all the presentations and being enslaved to taking notes. One that I thought was pretty cool was Water Hardness by Emlyn, Alec, and Marissa. I went into the presentation knowing nothing about water hardness (I thought it was like ice, lol) and came out knowing a whole lot. I found that general hardness (GH) is the number of divalent cations (minerals that have lost 2 electrons) dissolved in the water. And the water usually contains calcium or magnesium if it is hard.