Answer: Hello, a thing that is composed of two or more separate elements; a mixture.
Explanation: A chemical compound is a chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds. A molecule consisting of atoms of only one element is therefore not a compound This can help you find the answer cause i cant see the answer chocies
The most massive part of the atom is the NUCLEUS which has a POSITIVE charge.
(That's why we have electrons to balance the charge)
I hope this helps!