Question

question 1-10
what material type does the scientific theory of atoms identify the atom as the smallest unit of?
○ a gas
○ a molecule
○ an element
○ a compound

Explanation:

The atomic theory states that an atom is the smallest unit of an element that retains the chemical properties of that element. A gas is a state of matter, a molecule is made of atoms, and a compound is made of different elements. So the atom is the smallest unit of an element.

Answer:

an element (the option with "an element" text, corresponding to the third option in the list as per the image layout: the third circular option labeled "an element")