Which statement describes the earliest model of the atom?A. An atom is an indivisible hard sphere. B.An atom has a small, dense nucleus. C.Electrons are negative particles in an atom. D.Electrons in an atom have wave-like properties.

A). An atom is an indivisible hard-sphere.

Explanation:

The 'Atomic Theory' of Dalton is characterized as the earliest model(came in 1803) which described the atoms as the indivisible and resistant spheres. He used the example of watermelon to elaborate that the atoms of a specific element share similar characteristics and the atoms of distinct elements differ in their mass as well as their size. Thus, option A is the correct answer.

passing a magnet thought the

mixture , because iron gets attracted to magnet .

po-215 i got it right on the quiz