Oxygen is reactive in that combines readily with other chemicals. However Oxygen is stable until it undergoes a chemical reaction. Ozone is necessary for living things in that it protects living things from harmful solar radiation. Without an Ozone layer solar radiation would cause substantial DNA damage to living organisms.
It is possible that without Ozone life on the surface of the earth would not be viable. What is the difference between O2 and O3? David Drayer. Jan 28, Explanation: Oxygen gas is necessary for living things in that it fuels the Kreb's cycle that changes carbohydrates like sugar into energy. Related questions What is the importance of the ozone shield and how do CFCs deplete ozone? How do chlorofluorocarbons destroy ozone? Which chemical damages the protective ozone layer? Oxygen, on the other hand, is mostly found in the lower layers of the atmosphere.
Share this comparison:. If you read this far, you should follow us:. Diffen LLC, n. Oxygen vs. Ozone O3 is a triatomic molecule, consisting of three oxygen atoms.
It is an allotrope of oxygen that is much less stable than the diatomic O2. Ground-level ozone is an air pollutant with harmful effects on the respiratory systems of animals. Human noses can identify ozone gas at 10 ppm.
Melting point Differences in properties Both diatomic ozone O 2 and triatomic ozone O 3 are made up of oxygen atoms but they have different chemical and physical properties. Oxygen is odorless while ozone has a strong, pungent odor. Ozone is chemically less stable compared with oxygen. So ozone reacts more readily and at lower temperatures with other molecules. For example, ozone can react with carbon compounds at room temperature but oxygen requires more heat before it reacts.
Usefulness of oxygen vs ozone While animals need oxygen to breathe, ground-level ozone is an air pollutant with harmful effects on the respiratory systems of animals. Presence of ozone and oxygen on the Earth Ozone is present in low concentrations throughout the Earth's atmosphere.
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