anonymous
  • anonymous
Would a physical change be separating an oil from solution by cooling it? The other options are: Creating salt by reacting sodium metal and chlorine gas. Allowing a nail to rust. Building a model rocket propelled by mixing baking soda and vinegar.
Chemistry
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
@aaronq
aaronq
  • aaronq
A chemical reaction is that where bonds are broken and new bonds are formed. The separation of substances by manipulating their melting points is physical, no bonds are broken, only a change of state occurred.
Preetha
  • Preetha
Ask yourself, has the chemical identity of anything changed because of the process? If not, it is possibly a physical change.

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More answers

anonymous
  • anonymous
Well, allowing a nail to rust would change it's physical properties, right?
aaronq
  • aaronq
It's chemical, Iron (Fe) is oxidized by oxygen into iron oxides (e.g. \(Fe_2O_3\)), which would be categorized as a redox reaction.
Preetha
  • Preetha
Good job Aaron.
aaronq
  • aaronq
Thanks, Dr. Preetha.
anonymous
  • anonymous
I am still unsure of the correct answer..
abb0t
  • abb0t
Well, what do you think it is, based on the explanations given by the users above? Which btw, have given great explanations :-)
anonymous
  • anonymous
Well I believe it is separating an oil from solution by cooling it. @abb0t
aaronq
  • aaronq
That is the answer.
anonymous
  • anonymous
Thank you, @aaronq , another medal for you :)
aaronq
  • aaronq
lol thanks!

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