Question

Molecules _____.

A) are named according to the alphabet
B) are the smallest units of matter
C) must be made of two different elements
D) are made of two or more atoms

Answer 1

D

Step-by-step explanation:

Answer 2

D

Step-by-step explanation:

A is incorrect because they are named by elements and the number of atoms.

B is incorrect because the smallest units of matter are usually considered to be atoms.

C is incorrect because O2 is considered a molecule, and is made of only one element.

So, D is correct, because molecules are groups of two or more atoms that are held together by chemical bonds.