Consumer good. Consumer good, in economics, any tangible commodity produced and subsequently purchased to satisfy the current wants and perceived needs of the buyer. Consumer goods are divided into three categories: durable goods, nondurable goods, and services.
Helium is a chemical element with symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas that heads the noble gas group in the periodic table. Its boiling and melting points are the lowest among all the elements. Helium is the second lightest element and is the second most abundant element in the observable universe, being present at about 24% of the total elemental mass, which is more than 12 times the mass of all the heavier elements combined.
Matter can be uniquely identified by using two main categories of properties, they are physical and chemical. Physical properties of matter refer to characteristics of a substance that can be observed WITHOUT changing the actual âmakeupâ of a substance. Some physical properties include mass, volume, color, boiling point, how hard a substance is, and even taste. Many things that we come in contact with can be accurately identified by just using some physical properties that we observe about it.