Question

Define chemical reaction and write its characteristics

Answer 1

Changes in color, texture and luster don't always mean that a chemical reaction has taken place, nor does the presence of bubbles. But because all are common characteristics of chemical reactions, they can serve as clues that a molecular change may have occurred.

Answer 2

Answer:

A chemical reaction happens when one or more chemicals are changed into one or more other chemicals. Examples: iron and oxygen combining to make rust. vinegar and baking soda combining to make sodium acetate, carbon dioxide and water.