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Direct linkDean, Natalie L.; Ewan, Corrina; Braden, Douglas; McIndoe, J. Scott – Journal of Chemical Education, 2019
Comprehension of the 3D structure of objects usually represented in 2D is a critical part of understanding molecular geometries. The frequency with which students actually get hands-on with 3D molecular structures is often limited to a singular laboratory session. We sought to develop a set of molecular shapes that were inexpensive enough not only…
Descriptors: Science Instruction, Chemistry, Molecular Structure, Science Laboratories
Woelk, Klaus – Journal of Chemical Education, 2015
In a classroom or take-home activity, students are challenged to write their name as a combination of chemical-element symbols and calculate "their" molar mass. Age-appropriate versions ranging from middle school to entry-level college classes are discussed. Acceptable molar-mass suggestions may be used in a competition for the heaviest…
Descriptors: Science Instruction, Elementary School Science, Elementary Schools, Middle Schools
Kuntzleman, Thomas S.; Ford, Nathan; No, Jin-Hwan; Ott, Mark E. – Journal of Chemical Education, 2015
Everyone enjoys seeing the cloudy white fog generated when solid carbon dioxide (dry ice) is placed in water. Have you ever wondered what physical and chemical processes occur to produce this fog? When asked this question, many chemical educators suggest that the fog is produced when atmospheric water vapor condenses on cold carbon dioxide gas…
Descriptors: Science Instruction, Scientific Principles, Science Experiments, Middle Schools
Cady, Susan G. – Journal of Chemical Education, 2014
The circuit board found in a commercial musical greeting card is used to supply music for electrochemical cell demonstrations. Similar to a voltmeter, the "modified" musical device is connected to a chemical reaction that produces electricity. The commercial 1 V battery inside the greeting card circuit board can be replaced with an…
Descriptors: Science Instruction, Music, Chemistry, Energy
Moore, Emily B.; Chamberlain, Julia M.; Parson, Robert; Perkins, Katherine K. – Journal of Chemical Education, 2014
Developing fluency across symbolic-, macroscopic-, and particulate-level representations is central to learning chemistry. Within the chemistry education community, animations and simulations that support multi-representational fluency are considered critical. With advances in the accessibility and sophistication of technology,…
Descriptors: Science Instruction, Chemistry, College Science, Undergraduate Study
Wigton, Benjamin T.; Chohan, Balwant S.; McDonald, Cole; Johnson, Matt; Schunk, Doug; Kreuter, Rod; Sykes, Dan – Journal of Chemical Education, 2011
A low-cost portable fluorimeter was constructed using a 360 nm LED for excitation and a silicon photodiode for detection. The instrument is simple to operate and has been used to investigate fluorescent whitening agents extracted from various brands of paper, to determine the linear range and limit of detection of quinine in various commercial…
Descriptors: Science Experiments, Middle Schools, High Schools, College Science
