Is adding white powder to vinegar a chemical change?

When white powder (e.g., baking soda, sodium bicarbonate) is added to vinegar (acetic acid), a chemical reaction takes place. The baking soda and vinegar react to form carbon dioxide gas, water, and sodium acetate. The formation of carbon dioxide gas causes bubbles to form and effervescence, indicating that a chemical change has occurred.

The chemical equation for this reaction is:

NaHCO3 (sodium bicarbonate) + CH3COOH (acetic acid) → CO2 (carbon dioxide) + H2O (water) + CH3COONa (sodium acetate)

This reaction is a classic example of an acid-base reaction, where an acid (vinegar) reacts with a base (sodium bicarbonate) to produce salt (sodium acetate), water, and carbon dioxide gas.