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In a lab group you combined vinegar and baking soda and observed the results shown in the picture. Choose ALL of the evidence that supports that a chemical change has occurred. Select all that apply. There is no partial credit awarded for this answer.

(1 point)
Responses

A gas is produced.
A gas is produced.

The color changed.
The color changed.

Bubbling occurred.
Bubbling occurred.

The baking soda dissolved.
The baking soda dissolved.

There is a change in the composition of the reactants.
There is a change in the composition of the reactants.
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1 answer

To determine if a chemical change has occurred in the reaction between vinegar and baking soda, we can look for specific evidence. Here’s how each response relates to identifying a chemical change:

  1. A gas is produced. - This indicates a chemical change because the formation of gas (carbon dioxide in this case) suggests a reaction has taken place.

  2. The color changed. - A color change can indicate a chemical change, as it often results from new substances being formed.

  3. Bubbling occurred. - Bubbling is typically a result of gas being produced, which is a sign of a chemical reaction.

  4. The baking soda dissolved. - Dissolving is a physical change, not necessarily a chemical change. It does not by itself indicate that a chemical reaction has occurred.

  5. There is a change in the composition of the reactants. - This is a definitive indicator of a chemical change, as it means new substances have formed.

Based on this analysis, the responses that support the occurrence of a chemical change are:

  • A gas is produced.
  • The color changed.
  • Bubbling occurred.
  • There is a change in the composition of the reactants.

The option about the baking soda dissolving does not indicate a chemical change, so it should not be selected.