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.
âº also product packaging COMMERCE the process of putting together information, products, or services to be sold as a set: We specialize in the packaging of services, with the aim of selling more to each individual customer. Newspapers are finding that flexible content packaging is essential in a globalized market. âº MARKETING the process of showing or describing something or someone in a way that makes it or them seem more attractive: