Quick-Start Guide. When you enter an equation into the calculator, the calculator will begin by expanding (simplifying) the problem. Next, it will attempt to solve the equation by using one or more of the following: addition, subtraction, division, factoring, and completing the square.uick-Start Guide. When you enter an equation into the calculator, the calculator will begin by expanding (simplifying) the problem. Next, it will attempt to solve the equation by using one or more of the following: addition, subtraction, division, factoring, and completing the square.
Molecular formulas describe the exact number and type of atoms in a single molecule of a compound. The constituent elements are represented by their chemical symbols, and the number of atoms of each element present in each molecule is shown as a subscript following that element's symbol.
atomic number â The number of protons in an atom. Sometimes called the proton number. electron arrangement â A shorthand way of writing the. number of electrons in an atomâs electron shells. element â A substance made up of only one type of atom.