Examlex
Sodium
A chemical element with symbol Na and atomic number 11, known for its role in nerve impulse transmission and muscle contraction.
Covalent Compound
A compound in which atoms are held together by covalent bonds; covalent compounds consist of molecules. Compare with ionic compound.
Methane
A colorless, odorless gas, CH4, that is the simplest alkane and a major component of natural gas, contributing to greenhouse gas emissions.
Potassium Chloride
A metal halide salt composed of potassium and chlorine, used in various applications including as a fertilizer, in medicine, and in food processing.
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