Ion Chip Challenge: A Brain Break for Chemistry Classrooms

The Ion Chip Challenge is an interactive brain break game where students play rock-paper-scissors to exchange electron chips, helping them understand ion formation by addressing common misconceptions about positive and negative charges. This engaging activity combines movement and social interaction, making chemistry concepts more accessible and reinforcing that ions are formed through the transfer of electrons, not protons.

Amount and rate of heat transfer using iron spheres and liquid nitrogen

When iron spheres at room temperature are added to liquid nitrogen, the nitrogen boils as heat is transferred in from the iron. The amount of liquid nitrogen boiled depends on the amount of heat transferred, which depends on the mass of the iron added. However, the rate at which liquid nitrogen boils depends on the surface area of the iron in contact with the liquid nitrogen. These phenomena can be studied with experiments which measure the mass lost by the boiling liquid nitrogen.

Chemistry Topics

acids/bases applications of chemistry aqueous solution chemistry Atomic Properties / Structure conductivity consumer chemistry Demonstrations density electrochemistry electrolysis equilibrium Food Science gases General Chemistry kinetics Laboratory Instruction liquids metals noncovalent interactions Outreach oxidation/reduction Oxidation / Reduction Phases / Phase Transitions / Diagrams Physical Chemistry physical properties Polymer Chemistry precipitation/solubility Public Understanding reactions solids stoichiometry thermodynamics