Curated OER
Elements
In this elements activity, students write the electron configurations for given elements. Students describe ionization energy and electron affinity and the periodic trends for both. This activity has 20 short answer questions.
Curated OER
Significant Figures and Measurement
In this science learning exercise, students draw several markings on a ruler or graduated cylinder or thermometer to get each of the correct measurements. Then they state what place the marking indicates and the number of significant...