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Answer:
John Dalton's description of the billiard ball model was a foundational concept in the development of atomic theory. In this model, Dalton proposed that atoms are small, indivisible, and solid spheres, much like billiard balls. Here’s a summary of his description:
- Indivisible and Solid: Dalton suggested that atoms are the smallest units of matter and cannot be divided further. They are solid and uniform in shape, similar to billiard balls.
- Uniform and Homogeneous: Each type of atom is considered to be uniform in size and mass for a given element, analogous to how a billiard ball is uniform in size and weight.
- Collisions: Dalton compared the behavior of atoms to billiard balls in that they collide with each other in predictable ways, influencing how they combine to form compounds.