Question

chemical reaction and equation explain the lesson

Answer 1

Equation?
A chemical equation is a way to represent a chemical reaction using element symbols. Chemical equations have two sides: the reactant side and the product side.


Chemical equations have a reactant and a product side.
Chemical Equation Parts

Matter cannot be created or destroyed. This means that, after a chemical reaction has taken place, you still need to have the same amount of each element on the reactant side as you do on the product side. It has to stay balanced, just like the way you have to keep all sides of the platform balanced in Topple!

The Key to Balancing
There is only one atom of each element in an equation, unless the element has a coefficient or a subscript with it. A coefficient is a number written in front of the element, while a subscript is a number that comes after the element, written smaller and slightly below the element.

A subscript tells how many atoms of that element there are. The coefficients are multiplied by every element or its subscript to determine the number of atoms. If the element is listed more than once on a side, you add the atoms together to get a total.

So how do we balance an equation? To start, we count the number of atoms of each element. Once we know the total number of atoms of each element, we can change or add coefficients to make the sides balance. Important: We can NEVER change or add subscripts!

Answer 2

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