1, observation method

Observation method is mainly a complex product of chemical formula. Calculate the chemical formula coefficient of related chemical reactants and the coefficient of this product in reverse, and then find out the coefficients of other chemical formulas according to the obtained chemical formula coefficient until the balance.

2. Least common multiple method

The least common multiple method is mainly to find out the atoms with many atoms and single pairs on both sides of the reaction formula and find his least common multiple. As a breakthrough, then continue to deduce the coefficient method of each molecule. This method is common in the balancing of chemical equations, and it is also the students. One of the most commonly used methods.

3. Parity matching method

Cardinal even number matching method is mainly based on the number of occurrences of an element in reactants and products of chemical reaction equations, starting with odd chemical formulas and matching them into even numbers. Then according to the obtained chemical formula coefficient. To balance other chemical formulas. Counting finally uses the equal number of atoms on both sides of the equation to check whether equilibrium has been reached.

Definition of equation

The definition of an equation refers to an equation containing unknowns. It is an equation that represents the equal relationship between two mathematical expressions (such as two numbers, functions, quantities and operations), and the value of the unknown quantity that makes the equation hold is called "solution" or "root". The process of finding the solution of the equation is called "solving the equation".