What is the chemistry of volcanoes?
Chemistry For Your Life
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The Origins of the Earth
The earth is not just a big ball of solid rock. It has a liquid core that's actually very, I think it's iron rich. There are gases that are able to be dissolved in this liquid because they're under pressure. So somewhere in the bottom of the crust and the top of the mantle, even though it's all mostly solid, there is liquid. And we know that magma does not come from the liquid core because the chemical composition of magma is different.
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