Chemical Reaction

Differentiate between.Reactants and productsWord equation and formulae equationCombination reaction and decomposition reactionPositive catalyst and negative catalyst

a. Reactants and products.

Reactants	Products
The chemicals that undergo chemical changes are reactants.	The chemicals that are formed as a result of the reaction are products.
These are the chemicals before the reaction between them occurs.	These are the chemicals after the reaction between them occurs.

b. Word equation and formulae equation.

Word	Formulae
It is the representation of chemical equations by words.	It is the representation of chemical equations by symbols.
It is less informative.	It is more...

Define chemical reaction. Explain its types and sub-types with example.

A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another Chemical reactions are usually characterized by a chemical change, and they yield one or more products, which usually have properties different from the reactants.

Examples :

i. Combustion

ii. Oxidation (rusting

iii. Decomposition or fermentation

iv. Photosynthesis

v. Reacting acids and bases together.

The...

What is a catalyst? Define +ve and -ve catalyst with examples of each.

A catalyst is a chemical substance that increases or decreases the rate of a chemical reaction without taking part in a chemical reaction.

The +ve catalyst is the chemical substance that increases the rate of a chemical reaction. For example MnO₂. The catalyst is the chemical substance that decreases the rate of a chemical reaction. For example glycerine.