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Chemical Reaction Types by Mind Map: Chemical Reaction Types
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Chemical Reaction Types

Grade Level: 9-12Subject area: ChemistryStandard: Interactions of Matter, Chemical reactions: types of reactions, acids/bases.

Chemicals Reactions

Combustion

What is it?

A combustion reaction is when oxygen combines with another compound to form water and carbon dioxide

Example

These reactions are exothermic, meaning they produce heat. An example of this kind of reaction is the burning of napthalene

C10H8 + 12 O2 ---> 10 CO2 + 4 H2O

Synthesis

Example

iron and sulfur to form iron (II) sulfide

iron and sulfur to form iron (II) sulfide

8Fe +S8---> 8FeS

What is it?

When two or more simple compounds combine to form a more complicated one

Decomposition

What is it?

A decomposition reaction is the opposite of a synthesis reaction - a complex molecule breaks down to make simpler ones

Example

A decomposition reaction is the electrolysis of water to make oxygen and hydrogen gas.

A decomposition reaction is the electrolysis of water to make oxygen and hydrogen gas.

2 H2O ---> 2 H2 + O2

Single displacement

What is it?

This is when one element trades places with another element in a compound

Example

One example of a single displacement reaction is when magnesium replaces hydrogen in water to make magnesium hydroxide and hydrogen gas

Mg + 2 H2O ---> Mg(OH)2 + H2

Double displacement

What is it?

This is when the anions and cations of two different molecules switch places, forming two entirely different compounds

Example

One example of a double displacement reaction is the reaction of lead (II) nitrate with potassium iodide to form lead (II) iodide and potassium nitrate:

Pb(NO3)2 + 2 KI ---> PbI2 + 2 KNO3

Acid-base

What is it?

This is a special kind of double displacement reaction that takes place when an acid and base react with each other. The H+ ion in the acid reacts with the OH- ion in the base, causing the formation of water. Generally, the product of this reaction is some ionic salt and water

Example

One example of an acid-base reaction is the reaction of hydrobromic acid (HBr) with sodium hydroxide

HBr + NaOH ---> NaBr + H2O