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Although a compound is a pure substance, it contains two or more…

January 23, 2024

Although a compound is a pure substance, it contains two or more elements combined chemically. Select each of the following that is an example of a mixture of pure elements and does not include one or more chemical compounds.
iron (III) oxide (Fe2O3), which is known as rust
a combination of iron (Fe) and copper (Cu) shavings
hydrogen peroxide (H2O2), a common antiseptic
carbon dioxide (CO2) gas and water vapor (H2O) in the air after a forest fire
silicon dioxide (SiO2), a common chemical constituent of sand
hydrogen (H2) and oxygen (O2) gases added, one after the other, to the combustion chamber of a rocket
oxygen (O2), nitrogen (N2) and argon (Ar) gases as they occur naturally in the Earth’s atmosphere

compound, more.., Physics, Pure, Substance

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