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.

there are no statements provided but here is why:

sulfur belongs to group 16 because it can be found in nature whether it is in a free or combined state.

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c- cold periods in earth's history during which glaciers covered much of the surface.

explanation: