2cu o2

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Define a chemical equation. Classify the following into physical and chemical changes. Freezing of water. Which of the statements about the reaction below are incorrect? Is there a deposition on the plate in case of any of the compounds?

2cu o2

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Wiki User. Exothermic, combustion. Cu2 should be '2Cu' two uncombined atoms of copper. O2- should be 'O2; 2 combined atoms of oxygen. Thus, copper is oxidized; loses electrons. Tags Chemistry Elements and Compounds Subjects. Log in.

2cu o2

The oxidation-reduction or in short redox reaction is one of the most common types of chemical reactions happening in and around us. For example, rusting of metals, photosynthesis, digestion of food, and combustion of fuels are redox reactions. The oxidation-reduction reactions happen in a pair because one thing loses electrons and is oxidized; the other thing gains the electrons and is reduced. That is why it is commonly called redox reaction, where red- represents reduction and —ox represents oxidation. The green patina on the statue of liberty, shown in Fig.

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Now that we understand that chemical reactions occur with a simultaneous change in energy, we can apply the concept more broadly. To start, remember that some chemical reactions are rather difficult to perform. For example, consider the combustion of carbon to make carbon monoxide:.

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