Ontario Grade 9 Science Class Practice Exam 2026 - Free Grade 9 Science Practice Questions and Study Guide

A Bohr-Rutherford diagram is a visual representation of an atom's structure, specifically showing the numbers and locations of protons, neutrons, and electrons. This is also known as the atomic structure. Option A is incorrect because molecule structures involve multiple atoms, whereas a Bohr-Rutherford diagram only shows the structure of one atom. Option C is incorrect because energy levels of electrons can be represented in a different type of diagram, such as an orbital diagram. Option D is incorrect because chemical bonds are not shown in a Bohr-Rutherford diagram, which focuses solely on the individual atom's structure.