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11. Alison has completed an experiment in her science class. The procedure and set up she followed is below.

A. Measure the total mass of a sample of baking soda, a balloon, and a glass container partially filled with vinegar.
B. Add the baking soda to the balloon.
C. Seal the top of the container of vinegar with the balloon.
D. Pour the baking soda into the vinegar and observe the balloon.
E. Measure the total mass of the system again.

What statement below best describes the results she will find?
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1 point
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A. The total mass will change because a physical change occurred.
B. The total mass will not change because the total mass is conserved.
C. The total mass will change because a chemical change has occurred.
D. The total mass will not change because a physical change has occurred

All Answers 1

Answered by GPT-5 mini AI
B. The total mass will not change because the total mass is conserved.

Explanation: Although a chemical reaction occurs (baking soda + vinegar → CO2, water, salts), the system is closed (balloon seals the container), so all products (including CO2 gas) remain in the system and total mass stays the same.