Redox is a type of chemical reaction in which the oxidation states of substrate change. These reactions can be seen everywhere, and studying their variables is an important lesson to learn in Chemistry.

An acid–base reaction is a chemical reaction that occurs between an acid and a base. It can be used to determine pH. Both can be seen in chemistry in many chapters.

Stoichiometry is a section of chemistry that involves using relationships between reactants and/or products in a chemical reaction to determine desired quantitative data.

A fuel cell is an electrochemical cell that converts the chemical energy of a fuel and an oxidizing agent into electricity through a pair of redox reactions. It is a good substitute that helps sustain green technology.

Green technology or environmental technology means using science and technology to protect the world's natural resources and mitigate the negative environmental impact of human activity. It is a growing topic in our modern world.

Organic chemistry is the study of the structure, properties, composition, reactions, and preparation of carbon-containing compounds.

Laboratory equipment refers to the various tools and equipment used by scientists working in a laboratory.

Chemical and physical changes occur all around us all the time. These changes are essential parts of our daily lives, for example, digesting food, combustion, osmosis, and phase changes. However, a few of the chemical and physical changes that occur daily are harmful for the environment. Therefore we need to understand their properties.

Solubility is typically a limit to how much solute can be dissolved in a given amount of solvent. Concentration is the quantitative amount of solute dissolved at any concentration in a solvent. Calculating them is important in all chemistry problems.

The major aim of wastewater treatment is to remove as much of the suspended solids as possible before the remaining water, called effluent, is discharged back to the environment. This also helps in sustaining green technology.

Studying resources help us understand how and why and when to use them, and it is important to know how to reserve them and benefit from them.