Write the names of any two compounds made only from non-metals, and also mention two uses of each of them.
Two compounds made only from non-metals are:
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Carbon dioxide (CO₂): Made from carbon and oxygen, both non-metals. Uses: (i) Used in fire extinguishers as it does not support combustion. (ii) Used in carbonated beverages and soft drinks to provide fizz.
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Water (H₂O): Made from hydrogen and oxygen, both non-metals. Uses: (i) Essential for drinking and survival of all living organisms. (ii) Used for cleaning, cooking, agriculture, and industrial processes.
Explanation
The chapter identifies hydrogen, oxygen, and carbon as non-metals. Compounds formed by these non-metals include water (hydrogen and oxygen) and carbon dioxide (carbon and oxygen). The chapter mentions that water is essential for life and that carbon dioxide is present in air, demonstrating their practical importance.