Table of Contents
How are chemical equations used to represent chemical reactions?
A chemical equation is the symbolic representation of a chemical reaction. The reactants (the starting substances) are written on the left, and the products (the substances found in the chemical reaction) are written on the right.
What does a chemical reaction represent?
A chemical reaction represents a change in the distribution of atoms, but not in the number of atoms. In this reaction, and in most chemical reactions, bonds are broken in the reactants (here, Cr–O and N–H bonds), and new bonds are formed to create the products (here, O–H and N≡N bonds).
What are the main parts of a chemical reaction?
Chemical Reaction Parts: These include decomposition, synthesis, displacement, acid-base, combustion, oxidation-reduction, electrochemical, and myriad others.
What are the rules for writing a chemical equation?
Rules for writing chemical equation: Certain rules have to be followed while writing a chemical equation. The reactants taking part in the reaction are written in terms of their symbols or molecular formulae on the left-hand side of the equation. A plus (+) sign is added between the formulae of the reactants.
What are the purposes of a chemical equation?
The purpose of a chemical equation is to express this relation in terms of the formulas of the actual reactants and products that define a particular chemical change. For example, the reaction of mercury with oxygen to produce mercuric oxide would be expressed by the equation.
How are elements represented in a chemical equation?
In a chemical formula, the elements in a compound are represented by their chemical symbols , and the ratio of different elements is represented by subscripts. Consider the compound water as an example. Each water molecule contains two hydrogen atoms and one oxygen atom.
What are the essential of a chemical equation?
3 essential functions of a chemical equation 1. give the formula of all substances in the reaction. 2. correct chemical formula 3. account for all atoms involved.