Number 3:
Chlorine, Sodium, Sulfate, Magnesium, and Calcium.
Number 4:
The salt Increases/Decreases the density.
Hope this helps you!
:)
Two independent variables could change at the same time, and you would not know which variable affected the dependent variable
Explanation:
NaCl, HCl, NaOH, KCl, CH3COOH
I think this question is talking about electrons (since they flow freely in the electron cloud of an atom).
