Chemical formulas represent the elements and proportions of atoms in chemical compounds using symbols and numbers. An empirical formula gives the simplest whole number ratio of atoms in a compound. Compounds are formed via chemical bonds where atoms attract one another, and can contain two elements (binary) or three elements (ternary). The Stock system names chemical formulas using element symbols and oxidation numbers in Roman numerals in parentheses.

1.  Conclusion
Chemical formulas are present in our daily life. In this
activity we found out what elements are present in one
subject. In chemical formulas, every element has its
own particular chemical compound using a single line
of chemical element symbols, numbers and sometimes
also other symbols such as: parenthesis, dashes,
brackets and plus-minus signs. Empirical formula is the
simplest type of chemical formula which only uses
letter and numbers indicating atomic proportional
ratios. In Chemical Bond, atoms attract to one another
that forms chemic al substances that contains two or
more atoms. Binary Compound is a chemical compound
that contains exactly two different elements. While
ternary compound containing three different elements.
The type of naming of chemical formulas we’ve learned
was called the Stock system. Some elements have
more than one oxidation and when naming a compound
these must be identified. Roman numerals are shown
after the cation in parenthesis to indicate the oxidation
number.