化合物

化合物 (huà hé wù) refers to a chemical compound, a substance formed by the chemical combination of two or more elements in a fixed ratio. It is distinct from mixtures, which are physically combined and can be separated easily.

The character 化 (huà) means 'to change' or 'chemical,' 合 (hé) means 'to combine' or 'to unite,' and 物 (wù) means 'object' or 'substance.' Together, they form a term that describes substances created through chemical reactions.

In scientific contexts, 化合物 is commonly used in chemistry to describe various substances like water (H₂O), carbon dioxide (CO₂), and sodium chloride (NaCl). Understanding this term is essential for students studying science, especially in chemistry classes.