When baking soda and vinegar react, the product includes bubbles. what has most likely occurred? would it be a gas formation, exothermic reaction or precipitate formtion

Calcium chloride and baking soda solution: ... If you add them to vinegar they both form bubbles in a chemical reaction, but the ... How can chemical reactions help you tell the difference between similar of a gas, change in temperature, color change, or formation of a precipitate, ...

It turns into a gas and after the gas has left the chemical change is that the vinegar and baking soda will become a carbon dioxide 

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