Chemical Reactions Introduction

Chemical Reactions or chemical changes are the rearrangements of molecules in atoms. This requires enough energy to break the bonds with the reactants. This needed energy can be gained by collisions due to shaking, change in temperature, absorbtion from photons, etc. The products of chemical reactions will have different properties than the starting reactants that may include the colour, smell, and state of matter. The product may also have a different amount of energy. If a product produces energy it is exothermic. If it absorbs energy it is endothermic. Chemical Reactions also most balance, nothing is lost from reactant ---> product. There are five different types of chemical reactions: Synthesis, Decomposition, Single and Double Displacement and Combustion. Click on the links to learn more information about each one.

5 Types of Chemical Reactions

Synthesis
Decomposition
Single Displacement
Double Displacement
Combustion



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