Curated OER
Solids, Liquids, and Gases
In this chemistry element worksheet, 7th graders complete three pages of activities that help them learn about solid, liquid, and gas forms.
Other
Dynamic Periodic Table
Using this interactive Periodic Table of Elements, learners can view real-time data, dynamically change layouts, visualize trends, and see a 3-D view of orbitals. The names of elements are available in dozens of different languages....