Curated OER
Matter & Subatomic Particles
Seventh graders divide into small groups to construct several models. Each group builds with an accompanying chart showing the colors of gumdrops used for the protons, electrons, and neutrons.)
Curated OER
Atoms, Elements, Molecules, and Compounds
In this elements learning exercise, learners review the Bohr model and define negative and positive subatomic particles. Students compare molecules and compounds. This learning exercise has 11 short answer questions and 4 problems to solve.