I love this new web series, Reactions, from the American Chemical Society. In the first episode they offer several chemistry lifehacks, including one that can make bitter coffee drinkable and another to ripen bananas fast.
This PDF includes 67 full pages of various flippables, graphic organizers and activities for an Interactive Science Notebook to be used during a unit on Chemistry pages are teacher answer keys). Most foldables and flippables are left blank on the inside.
Elements According to Relative Abundance A 1970 periodic table by Prof. Sheehan of the University of Santa Clara that claims to show the elements according to relative abundance at the Earth’s surface.
A brief periodic table trends activity for high school and genchem college students to learn about the 5 trends of the periodic table: ionization energy, electron affinity, metallic character, atomic radius, and electronegativity.