Not necessarily. Alloys are "substances", but they don't generally have a chemical formula, they're mixtures which are not necessarily in stoichiometric proportions. The same is true for any mixture in general.
A substance can be described using its chemical formula, which consists of the chemical symbols for the elements in that substance and the corresponding numbers to indicate the ratio of each element present in the compound. For example, the chemical formula for water is H2O, showing that it is composed of two hydrogen atoms and one oxygen atom.
Peyote is a plant not a chemical substance.
a chemical formula
The identity of a substance (chemical compound) is defined by his chemical formula and molecular structure.
The substance is called nitrous oxide, with the chemical formula N2O.
A shorthand representation of the composition of a substance using atomic symbols and numerical subscripts is called a chemical formula.
Chemical Formula
There is none. Glass is a mixture, not a pure substance and so does not have a chemical formula.
The general chemical formula for oxidation is A + B -> AB. This represents a chemical reaction where substance A loses electrons and substance B gains electrons.
The substance with the chemical formula KNO3 is called potassium nitrate. It is used as an oxidizing agent in gunpowder.
yes
formula used in chemistry and a substance used in or a chemical process