Answer:
If the pure substance is a compound substance, then it is a compound. Examples include water H2O and table salt NaCl. Therefore, a combination of two or more elements chemically combined is called a compound. Note: A molecule can have two or more atoms of the same element or different elements
Answer:
Two or more elements chemically combined make up a compound. Hydrogen (H) (or any other element in the periodic table) is an example of an element and water (H₂O) is an example of a compound.