1. Withings Body Cardio. Measures: Full-body composition, body fat, water percentage, muscle and bone mass. Perfect for: Fitness and health fiends. Selling points: Accuracy; compatible with more third-party apps and devices than the other smart scales we tested. Drawbacks: None.
In this reaction, baking soda acts as a base, and takes a proton from vinegar, which is an acid. The reaction releases gas because when the baking soda receives the proton, it transforms into water and carbon dioxide.
The formation of a gas is another sign of a chemical change that can be seen or heard. Visually, gas formation can be seen when bubbles form in a liquid after two or more substances are mixed together. For example, if vinegar is added to baking soda, the mixture bubbles furiously as a chemical reaction occurs.