Chemical Reactions

By: Velina Z.

Chemical Reaction

It is when a substance is changed into a new one that has a different chemical identity.
Reaction of iron with sulfur

Iron + Sulfer -> Iron Sulphide

Fe + S ---> FeS

Synthesis Reaction

The Iron and Sulfur react when heated and makes a flame. When heated the mixture turns red and hardens. When it start to cool everything is hardened.

Synthesis Reaction

In a synthesis reaction two or more chemicals combine to form a more complex product.

A + B --> AB

Sodium and Water in a 40 gallon trash can
Sodium and Water

Sodium + Water ---> Sodium hydroxide (Explosion)

2Na(s) + 2H2O(l) ----> 2NaOH(aq) + H2(g)

Single-Replacement Reaction

The water in the trash can reacts with the sodium making an explosion.

Single-Replacement Reaction

When one element replaces another element in a compound.


A+BC-->AC+B

KMnO4 + H2SO4 makes fire

Potassium permanganate + Sulfuric acid ---> make Fire

4KMnO4 (aq) + 6H2SO4 (aq) ---> 2K2SO4 (aq) + 4MnSO4 (aq) + 6H2O (l) + 5O2 (g)

Combustion Reaction

A flame is created.



Combustion Reaction

A combustion reaction is when all parts of a compound are combined with oxygen to produces carbon dioxide and water.


CHO+O2-->H2O+CO2