Question

A. Is straining cooked pasta from water a physical or chemical separation?

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.