SSC MTS EXAM

Detailed explanation-1: -Gas bubbles are released during the reaction. A solid settles out of a liquid solution. The solid is called a precipitate. The bubbles are evidence that a gas has been produced and production of a gas is a sign of achemical reaction.

Detailed explanation-2: -Lesson Summary. A chemical reaction that produces a gas as one of the products is called a gas evolution reaction. Typically, the reactants of this type of reaction are an acid and a base.

Detailed explanation-3: -An example of a chemical reaction that produces a gas is the reaction between baking soda and lemon juice (citric acid). If you mix baking soda with lemon juice (or vinegar), both substances quickly react to form bubbles. The bubbles are made of carbon dioxide gas (CO2(g)).

Detailed explanation-4: -There are a number of observations that indicate a chemical reaction has occurred. One is the formation of a precipitate. A precipitate is a solid formed in a chemical reaction that is different from either of the reactants.