Challenge: Think about the factors that control atomic radius and the patterns you’ve seen. Why does the atomic radius decrease as electrons are added to a shell

If a solution had a ph of 7 what is the solution

Define the kinetic molecular theory

15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.