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

Observations Before Mixing
Observations After Mixing
• Vinegar is a clear liquid.
• Baking soda is a white solid
• The liquid remains clear.
• Many bubbles form.
• The remaining solid settles at the bottom.
Which observation supports Michael's claim that a chemical change has taken place?
(1 point)
The liquid remained clear after mixing the ingredients.
All of the solid disappeared after mixing the ingredients.
Many bubbles formed after mixing the ingredients.
• The remaining solid settled after mixing the ingredients.

1 answer

The observation that supports Michael's claim that a chemical change has taken place is:

Many bubbles formed after mixing the ingredients.

The formation of bubbles indicates that a gas is being produced, which is a common sign of a chemical reaction.