A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulae, wherein the reactant entities are given on the left-hand side and the product entities on the right-hand side.

A chemical reaction happens when one or more chemicals are changed into one or more other chemicals. Examples: iron and oxygen combining to make rust. vinegar and baking soda combining to make sodium acetate, carbon dioxide and water. things burning or exploding.

A chemical reaction is in which the bonds are broken within reactant molecules, and new bonds are formed within product molecules in order to form a new substance. Chemical reactions are all around us, from the metabolism of food in our body to how the light we get from the sun is the results of chemical reactions.

In one process, one new substance with new properties is formed from a reactant with the help of another compound or it is called chemical reactions. A good example of a chemical reaction is the rusting of iron. We kept an iron rod or iron nail on the outside; it easily rusts and changes the color of the material.

A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

Summary

1. To be useful, chemical equations must always be balanced. Balanced chemical equations have the same number and type of each atom on both sides of the equation.
2. The coefficients in a balanced equation must be the simplest whole number ratio. Mass is always conserved in chemical reactions.

If each side of the equation has the same number of atoms of a given element, that element is balanced. If all elements are balanced, the equation is balanced.

The five basic types of chemical reactions are combination, decomposition, single-replacement, double-replacement, and combustion.

Steps involved in balancing of chemical equation: Selecting the elements that occur for the least number of times in the equation. Balance atoms of each element on both sides of the reaction. Always leave hydrogen and oxygen for last to balance. Balance the hydrogen atoms lastly followed by balancing of oxygen atoms.

Chemical equations are symbolic representations of chemical reactions in which the reactants and the products are expressed in terms of their respective chemical formulae. They also make use of symbols to represent factors such as the direction of the reaction and the physical states of the reacting entities.

A chemical reaction involves the breaking of chemical bonds between the atoms or groups of atoms of reacting substances and rearrangement of atoms making new bonds to form new substances.

1)Hit and Trial Method: The simplest method to balance a chemical equation is by hit and trial method. Step 1 : Write down the correct formula of the reactants and products with plus sign in between with an arrow pointing from reactants to Products. This is called skeletal equation.

A chemical equation is a chemical reaction which is expressed in chemical formulas to identify the reactants and products. The symbols used to express a chemical equation are the chemical codes for an element. Each element has either one or two letter atomic symbols, which is an abbreviated form of its name or source.

Skeletal chemical equation is a representation of a chemical reaction using chemical formulae of reactants and products. In skeletal chemical equation the mass no of elements in reactant side is not equal to the mass no of elements in product side. For example: Mg + O2 → MgO, it’s a skeleton equation.

Answer. The chemical equation in which number of atoms are not equal on both sides is called a skeletal chemical equation. A balanced chemical equation is that in which the total number of atoms of each element are equal on both sides of the equation is called balanced chemical equation.

Skeleton reaction or equation is the reaction in which no. of atoms of reactant is not equal to the no. Of atoms of product. It is also called as unbalanced equation or reaction.