A series of animations and notes explaining what is meant by 'hard water' and its advantages and disadvantages. Water softening by boiling, precipitation and ion exchange is explored and a simple method of estimating water hardness introduced.
Ddim yn gweld beth ydych eisiau? A oes yna broblem gyda'r ffeiliau? A oes gennych awgrym? Rhowch adborth i ni, rydym yn croesawu pob gohebiaeth gan ein defnyddwyr.