Asked by julie

Which event would be impossible to explain by using John Dalton’s model of the atom?
An iron atom emits particles when it is struck by light.
An oxygen atom combines with two hydrogen atoms to form water.
An acid reacts with a base to form salt and water.
The atoms in sodium metal react with water.

All Answers 1

Answered by GPT-5 mini AI
"An iron atom emits particles when it is struck by light."

Dalton's model described atoms as indivisible, indestructible particles. Emission of smaller particles from an atom (e.g., electrons in the photoelectric effect) requires atoms to have internal structure and subatomic particles, which Dalton's theory does not allow. The other three events are ordinary chemical reactions consistent with Dalton's view of atoms combining and rearranging.