A substance formed by two or more atoms of different elements held together by covalent bonds is called a

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Multiple Choice

A substance formed by two or more atoms of different elements held together by covalent bonds is called a

Explanation:
When different elements come together and share electrons through covalent bonds, the result is a compound. A compound has a definite composition: two or more elements combined in a fixed ratio, like water (H2O), where hydrogen and oxygen are different elements. A molecule is a general term for any bonded group of atoms, and it can be made of the same element (like O2) or different elements (like H2O); the emphasis here is that the atoms are from different elements, which identifies it as a compound. An ion is a charged species, which is not implied by the description, and an element is a substance made of only one type of atom. So the best fit is compound.

When different elements come together and share electrons through covalent bonds, the result is a compound. A compound has a definite composition: two or more elements combined in a fixed ratio, like water (H2O), where hydrogen and oxygen are different elements. A molecule is a general term for any bonded group of atoms, and it can be made of the same element (like O2) or different elements (like H2O); the emphasis here is that the atoms are from different elements, which identifies it as a compound. An ion is a charged species, which is not implied by the description, and an element is a substance made of only one type of atom. So the best fit is compound.

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