Question

when you added baking soda to a container of vinegar, bubbles were produced and foam was formed. what type of change occurred?
neither a chemical nor physical change
both a chemical and a physical change
a physical change
a chemical change

Explanation:

Baking soda (sodium bicarbonate) reacts with acetic - acid in vinegar to form carbon dioxide gas, water, and a salt. The formation of new substances (carbon dioxide, water, and salt) indicates a chemical change. The bubbles are carbon dioxide gas being released. There is no physical change like change in state or shape without a chemical reaction here.

Answer:

D. A chemical change