Lesson 19 in the series of 36 analyzes the element hydrogen and the s-block elements. Through readings, answering questions, and discussion, learners write about and explain their occurrence, physical and chemical properties, and...

Here you can find out about hydrogen, the first element in the periodic table. Content includes shell information, where to find it in nature, and why it is helpful to us.

Here you can find some great information about the 8th element in the periodic table, "oxygen." Content focuses on oxygen's electrons, where you can find oxygen in nature and in the home, and how oxygen combines with other elements.