Why should distilled water be used when conducting chemical tests?
Select all that apply.
O Distillation removes most chemicals present in tap water that could give us false results.
O Distilled water is more expensive than tap water, and is therefore better to use in experiments.
O The distillation kills most bacteria that can be found in tap water.
O Distillation removes most minerals and metals present in tap water that could give us false results.

All of these options are correct. Distilled water should be used in experiments because regular water contains the impurities, minerals and unnecessary ions. As the reactions are the game of ions, atoms and molecules. So these extra impurities can effect the reuslts of the reactions.

a  solution  is always transparent, light passes through with no scattering from solute particles which are molecule in size. the  solution  is homogeneous and does not settle out. a colloid is intermediate between asolution  and a  suspension. while asuspension  will separate out a colloid will not.