Question

an atom is an example of a system, or a group of objects that interact with each other. scientists often use a model to represent a system that is complex or difficult to observe. the goal of a model is to make a system easier to understand. because atoms are so hard to see, people use atomic models to represent the way protons, neutrons, and electrons are arranged in an atom. the diagram below is an example of an atomic model. in this model, a positive electrical charge is shown with the plus symbol (+) and a negative electrical charge is shown with the minus symbol (−). use the words below to label each part of the model. proton electron neutron

Explanation:

1. The yellow circles with \(+\) charge are protons (protons have positive charge).
2. The blue circles with \(-\) charge are electrons (electrons have negative charge).
3. The gray circles with no charge shown are neutrons (neutrons are neutral).

So, the top - labeled part (yellow \(+\)) is proton, the middle - labeled part (blue \(-\)) is electron, and the bottom - labeled part (gray) is neutron.

Answer:

Top label: proton; Middle label: electron; Bottom label: neutron