Students will cut out atomic models of the first 18 elements on the periodic table paste them in the correct group and period. The atomic models only show the electrons. Students can count the number of valence electrons to figure out which group
This is a model of an atom of lithium. This can be used as a reference to show where protons, electrons and neutrons are located. The second page lists the mass, location and charge of the subatomic particles.
This worksheet allows students to practice the Law of Conservation of Mass. Students have to find the missing mass, determine chemical equations are balanced and determine if an observation is a sign of a chemical or a physical change.
This assignment uses a food web composed of shapes instead of animals. This allows students to analyze a food web without relying on their previous knowledge of familiar animals (of course the cow eats the grass). Students truly have to understand