A. is straining cooked pasta from water a physical or chemical separation? b. is using a fuel cell to separate water into hydrogen and oxygen a physical or chemical separation? c. which type(s) of matter (mixtures/compounds/elements) could be separated by physical methods ? d. which type(s) of matter (mixtures/compounds/elements) would need to be separated by chemical methods? explain all of the above .

A) Answer is: physical separation, because there is no reaction and new substance is not synthesise.

B) Chemical separation, old bonds are broken and new ones are formed.

Chemical reaction: 2H₂O → 2H₂ + O₂.

C) Mixtures, because there are no chemical bonds between substances in the mixture.

D) Compounds, because chemical bonds betwwen elements in the compounds must be broken.

if you mean hydrogen and oxygen then water is the product