Question

Vinegar and baking soda are put in a beaker together, and they undergo a chemical reaction. Look at the picture. How do you know a chemical reaction is occurring?

(1 point)

Changes shape

Bubbles are produced

Changes size

There is no chemical reaction. This is a physical change

Answer 1

You can tell that a chemical reaction is occurring because **bubbles are produced**. The reaction between vinegar (an acid) and baking soda (a base) produces carbon dioxide gas, which creates bubbles. This is a sign of a chemical change taking place.