SSC MTS EXAM

Detailed explanation-1: -This is called a chemical reaction. Gas may form, heat may be produced, and color may change. These types of changes indicate that a chemical reaction has occurred. Also explain that some substances when mixed together produce no chemical reaction.

Detailed explanation-2: -A change in color is also another characteristic of a chemical reaction taking place. For example, if one were to observe the rusting of metal over time, one would realized that the metal has changed color and turned orange. This change in color is evidence of a chemical reaction.

Detailed explanation-3: -The substances that go into a chemical reaction are called the reactants, and the substances produced at the end of the reaction are known as the products.

Detailed explanation-4: -Combination reactions occur when two or more substances combine to form a new substance.