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.

Question

Chemistry

Naomi Christensen

3 October, 23:04

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.

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Answers (1)

Know the Answer?

Scarlet Braun · Answer 1

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.