Indications of a Chemical Change. 1  Evolving bubbles or releasing gas. 2  Absorbing or releasing heat. 3  Changing color. 4  Releasing an odor. 5  Inability to reverse the change. 6  Precipitation of a solid from a liquid solution. 7  Formation of a new chemical species. This is the best and surest indicator.
Definition of packaging. 1 : an act or instance of packaging something or someone: such asa : the enclosing of something in a container or covering â¦ damage caused by static charge during packaging, storing, and shipping.
In order to recognize whether something is a form of packaging, consider the different types of. packaging. There are 4 types of packaging: 1. Packaging as integral part of the product, which contains and protects the product during its. life cycle, as well as all elements intended for its use, consumption or joint storage. NOT PACkAGING: TOOL BOx.