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What is a chemical? Basically, it is the science that studies the behavior and properties of matter. It is a branch of natural science that covers the elements that make up matter, atoms, molecules, and ions. In this article, you’ll learn more about the four types of chemical substances and the various types of reactions that can occur. This article will give you an overview of chemistry and answer the question, “What is a chemical?”

Polyatomic molecules

Polyatomic ions are covalently bound sets of two or more atoms. They may be called molecular ions or metal complex ions, but the term molecule may also be used to refer to them. The name molecule is not always used, though. In some circumstances it can be. In such cases, the term molecule will be a better fit. In this article, we will discuss the difference between polyatomic ions and molecules and their differences.


A chemical compound is any substance composed of two or more identical molecules. These molecules may be comprised of atoms of two or more different chemical elements. Compounds can be divided into simpler substances through a chemical reaction. In addition to the elements, a chemical compound may contain two or more atoms of the same type. Here are some examples of common compounds:


A chemical reaction is a process whereby one substance changes into another substance. The new substance is almost always accompanied by a change in energy and usually a change in color. These changes serve as clues to the process and are used by chemists to predict what may happen next. This article will discuss the different kinds of chemical reactions and their common symbols. For more information, read the articles below. Chemical reactions are a fascinating area of study.


What is the relationship between the different states of a substance? A substance may transition between one phase and another. Every element has the ability to change state. The physical and chemical properties of a substance determine how easily the substance can change state. Every substance undergoes phase changes at a certain temperature or pressure. A mixture of two substances will separate into two distinct phases when the pressure and temperature are the same. Here is how phase changes are defined.

Redox reactions

Redox reactions in chemistry are processes where the number of electrons in a substance changes from one oxidation state to another. The easiest way to remember this is to look for changes in the oxidation state of the reactants. If the number of electrons on a species decreases from its reactants to its products, then the reaction has taken place. If it increases, the reaction is said to be an oxidation reaction.

Ionic compounds

An ionic compound is a type of chemical compound made up of ions. These ions are held together by electrostatic forces and are generally neutral in their overall charge. They contain two types of ions: positively charged cations and negatively charged anions. The composition of ionic compounds can vary greatly, but the following are some of the most common types. Learn more about ionic compounds in the following paragraphs.

Network solids

What are network solids? Network solids are composed of chemical subunits that share the same type of bonding. Because of this, network solids form a continuous network of chemical bonds. For example, diamond is a pure form of carbon, while quartz is an extended three-dimensional network of SiO2-O2-… bonding. Carbon is also a network solid, with a few variations in the arrangement of carbon atoms.