Baking soda (sodium bicarbonate) does not significantly change the density of water when added in small amounts. The density of water at room temperature (25°C) is approximately 1 gram per cubic centimeter (g/cm³). Adding baking soda to water will slightly increase the density due to the presence of dissolved particles, but this change is negligible for practical purposes.

The impact of baking soda on water density becomes more noticeable at higher concentrations. For example, when baking soda is dissolved in water to form a saturated solution, the density can increase by about 2-3%. However, such concentrated solutions are not commonly encountered in everyday applications.

In summary, while baking soda can technically change the density of water, the effect is minimal for typical amounts used in household settings or everyday activities.