Quiz on Oxygen O2
Quiz on Oxygen O2
Oxygen is a colorless, tasteless, and odorless gas that is essential for life on Earth. It is represented by the symbol O and has an atomic number of 8. Oxygen makes up about 21% of the Earth's atmosphere and is used by humans and animals for breathing. Plants release oxygen during photosynthesis, making them vital for maintaining balance in nature. Oxygen also supports combustion, meaning it helps things burn. In industry, oxygen is used in welding, medicine, and the production of steel. In its combined form, it is found in water (H₂O) and many other compounds.
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Total Questions: 10
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