Question

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Question
Michael has recorded his observations while mixing vinegar and baking soda in a beaker.



Which observation supports Michael’s claim that a chemical change has taken place?

(1 point)
Responses

The liquid remained clear after mixing the ingredients.
The liquid remained clear after mixing the ingredients.

The remaining solid settled after mixing the ingredients.
The remaining solid settled after mixing the ingredients.

All of the solid disappeared after mixing the ingredients.
All of the solid disappeared after mixing the ingredients.

Many bubbles formed after mixing the ingredients.
Many bubbles formed after mixing the ingredients.
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page 13 of 13

Answer 1

are you sure

Answer 2

a b c or d

Answer 3

Correct response: Many bubbles formed after mixing the ingredients.

Explanation: The formation of bubbles indicates a chemical reaction is occurring as gas is being produced. This is a clear sign of a chemical change taking place.

Answer 4

Yes, I am sure. The formation of bubbles in a reaction involving vinegar (acetic acid) and baking soda (sodium bicarbonate) indicates the release of carbon dioxide gas, which is a clear sign of a chemical change occurring.

Answer 5

The correct response is: Many bubbles formed after mixing the ingredients.

This observation supports Michael's claim that a chemical change has taken place because the formation of bubbles indicates the release of gas, which is a sign of a chemical reaction.