Question

1. what does this model represent?
2. positive nucleus, electrons moving in shells
3. electron cloud
4. billiard ball (uncuttable)
5. plum pudding/blueberry muffin
6. charged region in center (planetary)

Explanation:

The model shows a positive - charged "soup" (represented by the + signs) with electrons (the green dots) embedded within it, which matches the description of the Plum Pudding (or Blueberry Muffin) model of the atom. The Billiard Ball model views the atom as a solid, indivisible sphere. The Planetary model has a positive nucleus at the center with electrons orbiting in shells. The Electron Cloud model represents electrons as a cloud of probability. The "Positive Nucleus, Electrons moving in shells" is part of the Bohr or modern planetary - like models. So the model in the image represents the Plum Pudding/Blueberry Muffin model.

Answer:

1. Plum Pudding/Blueberry Muffin