Table of Contents
An Introduction to compounds and their chemical formulas ; Common Bases
Chemical Formula – Common Compounds
- Compounds are composed of two or more elements that are chemically combined. The chemical formula for a compound is a representation of the atoms of each element in the compound and the number of atoms of each element. For example, the chemical formula for water is H2O, because water is composed of two hydrogen atoms and one oxygen atom.
- Common bases are substances that react with acids to produce a salt and water. Bases are classified as either strong or weak. Strong bases are substances that completely dissociate in water, producing hydroxide ions (OH-). Weak bases are substances that only partially dissociate in water, producing hydroxide ions and ammonium ions (NH4+).
Types of Chemistry Formulae or Chemical Formulae
Chemical formulae are the representations of the chemical composition of molecules and ions. In a chemical formula, the elements are represented by symbols and the number of atoms of each element is shown by subscripts. For example, the chemical formula for water is H2O, which means that each molecule of water is composed of two atoms of hydrogen and one atom of oxygen.
How to write a chemical formula?
The steps for writing a chemical formula are:
- Write the symbol for the element.
- Write the subscripts to show the number of atoms of that element.
- If there is a charge on the molecule, write it as a superscript.
- If there is a radical on the molecule, write it as a subscript.
- If the molecule is an ion, write the symbol for the ion.
- If the molecule is a molecule, write the symbol for the molecule.
List of Chemical Compound Formula
1. Methane (CH 4 ): Methane is a colorless, odorless gas that is the simplest hydrocarbon.
2. Ethane (C 2 H 6 ): Ethane is a colorless, odorless gas that is the second simplest hydrocarbon.
3. Propane (C 3 H 8 ): Propane is a colorless, odorless gas that is the third simplest hydrocarbon.
4. Butane (C 4 H 10 ): Butane is a colorless, odorless gas that is the fourth simplest hydrocarbon.
5. Pentane (C 5 H 12 ): Pentane is a colorless, odorless gas that is the fifth simplest hydrocarbon.
6. Hexane (C 6 H 14 ): Hexane is a colorless, odorless gas that is the sixth simplest hydrocarbon.
7. Heptane (C 7 H 16 ): Heptane is a colorless, odorless gas that is the seventh simplest hydrocarbon.
8. Octane (C 8 H 18 ): Octane is a colorless, odorless gas that is the eighth simplest hydrocarbon.
9. Nonane (C 9 H 20 ): Nonane is a colorless, odorless gas that is the ninth simplest hydrocarbon.
10. Decane (C 10 H 22 ): Decane is a colorless, odorless gas that is the tenth simplest hydrocarbon.
