The scientist imagines what a very small piece of sample A would look like if she could see its atoms. She includes 20 copper atoms in the model she draws of this very small piece of sample A. If you were to draw a model of the particles (atoms) in a very small piece of sample B, that was the same size as the very small piece from sample A and at the same temperature: what would be the same and what would be different in your model? Mark the correct answer for each feature.​