an energy formation
a chemical reaction
What has occurred?
an endothermic reaction
an energy formation
a chemical reaction
a precipitate formation
The Statue of Liberty is made out of copper and was once shiny and copper-colored. Over the years, the copper has gone through a process called oxidation, where it has changed into a new material.
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What has occurred?
an endothermic reaction
an energy formation
a chemical reaction
an energy formation
a chemical reaction
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