What does silica do to magma?

Question:

What does silica do to magma?

A Partially Molten Mixture:

Magma is a mixture of rock that is partially molten and that is found in the crust of the Earth. It varies in composition, but it contains minerals and gases and chunks of rock. The most plentiful elements found in magma are oxygen and silicon.

Answer and Explanation: 1

The composition of magma affects its physical characteristics. The higher the silica content of magma, the more viscous, or the thicker, it becomes. When there's more silicon in magma, it bonds with oxygen to form a charged tetrahedron, or compound with four atoms. These tetrahedra will bond together since they're charged, and form long polymer chains. This is what makes the magma become more viscous.


Learn more about this topic:

Silicon: Element Lewis Structure, Facts & Discovery
Silicon: Element Lewis Structure, Facts & Discovery

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Chapter 13 / Lesson 4
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Learn about the Silicon Lewis dot structure and see the silicon symbol. Understand the link between its place in the periodic table and its chemistry.


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