Chapter U5.15, Problem 1E

Interpretation Introduction

Interpretation: The oxidation of metal and combustion of covalent compound need to be compared.

Concept Introduction: Oxidation reactions are formed by transferring electrons to oxygen or another atom. In a combustion reaction, a substance reacts with oxygen gas discharge energy in the form of heat and light.

Answer to Problem 1E

The reaction of oxygen with a metal produces a solid metal oxide, while the combustion of the covalent molecule forms a gaseous molecule.

Explanation of Solution

The product formed in the oxidation of metal and combustion of covalent compounds is different. Compare the oxidation of copper metals and combustion of methane as follows:

Oxidation of copper produces copper (II) oxide, while the combustion of methane produces ${\text{CO}}_{\text{2}}$ gas and ${\text{H}}_2\text{O}$ . During the reaction, both oxidations of metal and combustion of the covalent compound transfer energy to the surrounding. This energy is in the form of heat and sometimes a bright light.

Conclusion

Metal combines with oxygen to produce a metal oxide, whereas the combustion of covalent compounds produces gases.