Anonymous asked in Science & MathematicsChemistry · 2 weeks ago

When a substance undergoes a chemical reaction, which of the following will NOT change? (Select all that apply)?


2. Energy 

3. Density 

4. Mass

6 Answers

  • 2 weeks ago

    Chemistry has to do with the reactions of electrons, no mass is changed. So answer (4) only.

    Physics delves into nuclear processes where mass can change (E=mc²)

  • 2 weeks ago

    none of the above

  • Lôn
    Lv 7
    2 weeks ago


  • 2 weeks ago

    Your teacher probably wants

    4. Mass

    which I suppose would be true if you're keeping things in a closed system, hey.

    You should probably go with Roger the Mole's answer.  I am so old I've forgotten everything I learned in college.

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  • 2 weeks ago

    4. Mass      .

  • Anonymous
    2 weeks ago

    I believe that the mass doesn’t change.

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