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- The ………. (discover) of oxygen in the 18th century was a significant moment in chemistry.
- Joseph Priestley and Carl Scheele both ………. (independent) isolated the gas around the same time.
- Antoine Lavoisier later recognized its elemental nature and provided a proper ………….. (name) for it.
- Oxygen is a ………... (color), odorless, and tasteless gas, making it imperceptible to our senses.
- It is ………… (fundamental) important for respiration, allowing most living organisms to breathe.
- The gas is highly ………. (react), readily combining with many other elements to form oxides.
- This ………… (react) is clearly seen in its role in combustion, where it supports flames.
- Oxygen is the most ……… (abundance) element by mass in the Earth's crust, found in rocks and minerals.
- It is a crucial ………. (compose) of water (H2O), making up a large portion of our planet's hydrosphere.
- Its ………. (wide) use ranges from medical oxygen therapy to industrial processes like steel production.