Exploring Our Fluid Earth

Most students got good results with their systems and observed the formation of gases. I took them through a very short note taking about the terms "hydrolysis" and "electrolysis" and the chemical formula for the reaction. The flow of electrons, cathode, anode were briefly mentioned. It was a little beyond them. There is just so much new vocabulary in science students can easily get overwhelmed. I think there may be a "typo" in the teacher answers to the activity questions. I'm pretty sure there should be more H2 than O2. Check the answers to #5 and #6 and if I'm confused than please clarify. (I am often confused...) I liked that there were not too many questions, just enough to guide students through the activity.