Question

in your 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
a a gas is produced
b the color changed
c fizzling occurred
d the baking soda dissolved
e there is a change in the composition of the reactants

Explanation:

When vinegar (acetic acid) and baking soda (sodium bicarbonate) react, carbon - dioxide gas is produced, which causes fizzing. A gas production indicates a chemical change as new substances are formed. Fizzing is a sign of gas production. Also, a change in the composition of the reactants occurs as they react to form new products like carbon - dioxide, water, and a salt. Dissolving alone is a physical change, but here the overall reaction is chemical. Color change is not a typical sign in this reaction, but gas production and composition change are key.

Answer:

A. A gas is produced
C. Fizzing occurred
E. There is a change in the composition of the reactants