Chemistry, 23.10.2020 19:10 jgrable5175

Which statement identifies why oxygen is classified as a pure substance and air is classified as a mixture Oxygen goes under a phase change, whereas air is always a gas

Oxygen has a higher density than air

Oxygen contains only one substance but air contains several substances

Oxygen is more reactive than air

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Which statement identifies why oxygen is classified as a pure substance and air is classified as a m...