About Chemistry


Chemistry is a science which deals with the composition, structure and properties of substances and with the transformations that they undergo. It is the branch of science concerned with the substances of which matter is composed, the investigation of their properties and reactions, and the use of such reactions to form new substances.

What is a Chemical Equation?

A Chemical Equation is the symbolic representation of a chemical reaction in the form of symbols and formula, wherein the reactant entities are given on the left-hand side of the equal to sign and the product entities on the right-hand side of the equal to sign. Chemical equation is a method of writing the essential features of a chemical reaction using chemical symbols. By convention, reactants (present at the beginning) are on the left, products (present at the end) on the right. A single arrow between them denotes an irreversible reaction, a double arrow a reversible reaction.

What is a Chemical Formula?

A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs.

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