A scoop of baking soda is added to a beaker containing vinegar. The baking soda disappears and bubbles are observed. This is an example of a change.?

The reaction between baking soda and vinegar is an example of a chemical change. When baking soda (sodium bicarbonate) is mixed with vinegar (acetic acid), they react to produce carbon dioxide gas, which creates the observed bubbles. This reaction also results in the formation of water and sodium acetate. The disappearance of baking soda and the production of gas indicate that new substances are formed, characteristic of a chemical change.