Oxygen is one of the most representative chemical elements of the periodic table. Oxygen is a gas element with no smell or color.

A chemical equation is a symbolic expression that represents a chemical reaction using symbols and chemical formulas.

A chemical reaction occurs when one or more substances (reactants) are rearranged to form new and different substances (products).

The atomic number is one of the most relevant parts [...]

pH refers to the quantitative measure of the acidity or basicity of aqueous or other liquid solutions.

Carbon is one of the most representative and essential chemical elements on the periodic table. Carbon is represented by the symbol C.

Carbon dioxide (CO2) is a chemical compound made of molecules with one carbon atom covalently double-bonded to two oxygen atoms.

FIRST LAW An object at rest remains at rest, and [...]

The Bohr Model states the negatively charged electrons orbit a small, positively charged nucleus. 

Let's see the principles or characteristics of Dalton's atomic theory. [...]