Question

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.

Answer 1

To determine whether a chemical change has occurred in the reaction between vinegar and baking soda, we can consider the common indicators of a chemical change. Here’s an analysis of each response option provided:

1. A gas is produced. - This is a strong indicator of a chemical change, as gas production typically indicates a reaction has taken place.

2. The color changed. - A change in color can suggest a chemical change, as it often indicates that new substances with different properties are formed.

3. Bubbling occurred. - Bubbling is a sign that a gas is being released, which further supports that a chemical change has occurred.

4. The baking soda dissolved. - Dissolving is typically a physical change, not a chemical change, unless a new substance is formed upon dissolution (which usually isn’t the case with just vinegar and baking soda).

5. There is a change in the composition of the reactants. - This indicates a chemical change, as the reactants (vinegar and baking soda) transform into new products.

Based on this analysis, the evidence that supports that a chemical change has occurred includes:

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

Therefore, the correct responses are:

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