Émettre vos hypothèses quant à l'action de l'eau sur une solution très concentrée et d'après vous comment va changer le pH de la solution en ajoutant de l'eau ? :

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?