Question

cca 1 retest (8.6abe)
9 of 10
possible points: 7.09
alexandra and maddy made an atomic model of a substance as shown below. alexandra think its an element, but maddy think its a compound. which statement explains why either alexandra or maddy is correct?
alexandra is correct because there are two atoms in each molecule, making it a compound.
alexandra is correct because there is only one type of atom in each molecule.
maddy is correct because there are two atoms in each molecule.
maddy is correct because all molecules are compounds.

Explanation:

An element consists of only one - type of atom. In the given model, each molecule has only one type of atom. A compound is made up of two or more different types of atoms chemically combined. Since there is only one type of atom here, it is an element.

Answer:

Alexandra is correct because there is only one type of atom in each molecule.