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Decomposition Reactions

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Common Reaction Types
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Combination Reactions

In a combination reaction, two or more substances combine to form a single substance.

Beware: Just because a combination reaction combines two substances does not mean that the substances have to be in equal ratios.

What is a common combination reaction?

Decomposition Reactions

A decomposition reaction is one where a compound is broken down into two or more substances.

What's a common decomposition reaction?

Combustion Reactions

In combustion reactions, substances react with oxygen gas. Often these reactions will release energy in the form of heat and light.

Can combustion reactions be combination reactions? Decomposition reactions?

Single-Replacement Reactions

In single-replacement reactions, one element replaces another element in a compound.

What groups on the periodic table are most likely to replace elements in a single-replacement reaction? Why?

Double-Replacement Reaction

In double-replacement reactions, the elements of two different compounds essentially swap places with each other.

What are some common applications of double-replacement reactions?

For more guidance in answering the above questions or for more information, click on the links embedded within each section header.

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