Science Help! Ms. Sue Please!

8. Which of the following explains why the chemical products from a reaction have a different mass than the chemicals at the beginning?
The products are heavier and sink.
The products are lighter and rise.
The products are a gas and escape into the air.
The products are a solid and have more mass.

My answer would be d.

asked by Sarah
  1. All answers are wrong, if you include released gases among the products. The total mass stays the same, except for a very small mass loss (E/c^2) due to Einstein's Theory of Relativity.

    posted by drwls

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