Respuesta :
When two or more atoms chemically bond together, they form a molecule (O3). When atoms of at least two different elements come together to form chemical bonds, these molecules can be called compounds (NaCl). A pure substance consists of a single element or compound. For example, Iron is formed only of Iron (Fe) atoms; table salt is formed only by sodium chloride (NaCl) molecules.
Answer:
When two or more atoms chemically bond together, they form a molecule. Sometimes the atoms are all from the same element. In a covalent bond, electrons are shared between atoms. In a molecule, atoms are held together by chemical bonds or intramolecular forces. Covalent bonds, ionic bonds and metallic bonds are examples of chemical bonds. A covalent bond exists between non-metal atoms. An ionic bond exists between non-metal and metal atoms and a metallic bond exists between metal atoms.
Explanation:
