Ions and Isotopes Worksheet for chemistry practice.
A worksheet titled "Ions and Isotopes Worksheet" with two tables. The first table lists ions (Co²⁺, Co³⁺, Cl⁻, K⁺, Al³⁺, S²⁻, P³⁻, Sr²⁺) and asks for the number of protons and electrons. The second table lists isotopes (Uranium-235, Uranium-238, Boron-10, Boron-11) and asks for atomic number, mass number, number of protons, neutrons, and electrons. The source is ChemistryLearner.com.