Saturated solution is a solution in which no more solute can be dissolved in the solvent. When saturated solution cools, the solution began precipitate from the solution, because under lower temperature, usually, less amount solute can be dissolved in the solvent.
Manipulation of the independent variable should change the dependent variable, the value of which "depends" on the independent variable's change in value.
I believe it’s a positive charge
For it to be the same element it must contain the same number of protons
