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Peer reviewed
Direct linkReif-Acherman, Simo´n – Journal of Chemical Education, 2015
The British scientist Augustus Matthiessen (1831-1870) is widely known for his investigations on the influence of temperature on the electric conductivity of metals and alloys. However, his contributions to other areas of science throughout his career are not widely acknowledged. His research on the electrolytic decomposition of metallic salts…
Descriptors: Chemistry, Scientists, Scientific Research, Recognition (Achievement)
Shaw, C. Frank, III; Webb, James W.; Rothenberger, Otis – Journal of Chemical Education, 2016
The nature of acidic and basic (alkaline) oxides can be easily illustrated via a series of three straightforward classroom demonstrations for high school and general chemistry courses. Properties of carbon dioxide, sulfur dioxide, and magnesium oxide are revealed inexpensively and safely. Additionally, the very different kinetics of hydration of…
Descriptors: Secondary School Science, College Science, Chemistry, Science Education
Talbot, Christopher; Yap, Lydia – School Science Review, 2013
This "Science Note" presents a study by Christopher Talbot and Lydia Yap, who teach IB Chemistry at Anglo-Chinese School (Independent), Republic of Singapore, to pre-university students. Pre-university students may postulate the correlation between the magnitude of the lattice enthalpy compound and its melting point, since both…
Descriptors: Science Instruction, Secondary School Science, Correlation, Foreign Countries
Cheng, Maurice M. W.; Gilbert, John K. – International Journal of Science Education, 2017
This paper proposes a model-based notion of "submicro representations of chemical reactions". Based on three structural models of matter (the simple particle model, the atomic model and the free electron model of metals), we suggest there are two major models of reaction in school chemistry curricula: (a) reactions that are simple…
Descriptors: Science Instruction, Chemistry, Scientific Concepts, Models
Nicklas, Theresa A.; O'Neil, Carol E.; Fulgoni, Victor L., III – Journal of School Health, 2013
Background: Some schools are removing flavored milk from lunchrooms based on the perception that consumption has a negative impact on the overall dietary quality. The goal of this study was to assess the contribution of flavored and white milk in the diets of children. Methods: Intake data from children 2 to 18?years (N?=?7332) participating in…
Descriptors: Nutrition, Children, Adolescents, Dietetics
San Antonio, Christine Marie – ProQuest LLC, 2021
American lobster, "Homarus americanus," H Milne Edwards 1837, are an ecologically, economically, and culturally valuable marine resource for the coastal communities in the Gulf of Maine (GoM). The American lobster fishery is the most valuable commercial fishery in the United States, supporting thousands of jobs and generating hundreds of…
Descriptors: Climate, Mineralogy, Genetics, Animals
Bailey, Alla; Andrews, Lisa; Khot, Ameya; Rubin, Lea; Young, Jun; Allston, Thomas D.; Takacs, Gerald A. – Journal of Chemical Education, 2015
Global interest in both renewable energies and reduction in emission levels has placed increasing attention on hydrogen-based fuel cells that avoid harm to the environment by releasing only water as a byproduct. Therefore, there is a critical need for education and workforce development in clean energy technologies. A new undergraduate laboratory…
Descriptors: Science Instruction, Science Experiments, Science Laboratories, Laboratory Experiments
Download full textKasap, Murat; Erdemir, Ibrahim; Kayhan, Recep Fatih – Journal of Education and Training Studies, 2018
The study aims to determine whether water intake during resistance training impacts the amounts of potassium (K+), sodium (Na+), magnesium (Mg), and calcium (Ca) and to identify the effects of the reactions of these minerals on performance. Ten male university students aged between 20 and 23 participated in the study. The participants did five…
Descriptors: Water, Physical Education, Physical Activities, Athletics
Snider, Barry B. – Journal of Chemical Education, 2015
In this experiment, students carry out a halogen-metal exchange reaction of methyl 2-iodobenzoate with isopropylmagnesium chloride in THF at 0°C to afford 2-carbomethoxyphenylmagnesium chloride, which is treated with "p"-methoxybenzaldehyde to give a lactone (phthalide) product. This reaction introduces students to the modern method of…
Descriptors: Science Instruction, Metallurgy, Science Experiments, Organic Chemistry
Nicklas, Theresa A.; O'Neil, Carol; Fulgoni, Victor, III – Journal of School Health, 2017
Background: Some schools are removing flavored milk because of the perception that it negatively impacts children's overall diet. This study assessed the contribution of flavored milk to their diets. Methods: Individual usual intakes (IUI) were calculated from 24-hour dietary recalls of children 2-18 years (N = 20,329) participating in National…
Descriptors: Food, Incidence, Nutrition, Health Promotion
Coplen, Tyler B.; Meyers, Fabienne; Holden, Norman E. – Journal of Chemical Education, 2017
To indicate that atomic weights of many elements are not constants of nature, in 2009 and 2011 the Commission on Isotopic Abundances and Atomic Weights (CIAAW) of the International Union of Pure and Applied Chemistry (IUPAC) replaced single-value standard atomic weight values with atomic weight intervals for 12 elements (hydrogen, lithium, boron,…
Descriptors: Chemistry, Nuclear Physics, Scientific Concepts, Tables (Data)
Zimmer, Michelle H.; Hart, Laura C.; Manning-Courtney, Patricia; Murray, Donna S.; Bing, Nicole M.; Summer, Suzanne – Journal of Autism and Developmental Disorders, 2012
The frequency of selective eating and nutritional deficiency was studied among 22 children with autism and an age matched typically developing control group. Children with autism ate fewer foods on average than typically developing children. (33.5 vs. 54.5 foods, P less than 0.001) As compared to typical controls, children with autism had a higher…
Descriptors: Comparative Analysis, Autism, Nutrition, Food
Mohammed, Salisu Ishaku; Ahonsi, Babatunde; Oginni, Ayodeji Babatunde; Tukur, Jamilu; Adoyi, Gloria – Health Education Journal, 2016
Objective: To assess the knowledge of nurse-midwife educators on the major causes of maternal mortality in Nigeria. Setting: Schools of nursing and midwifery in Nigeria. Method: A total of 292 educators from 171 schools of nursing and midwifery in Nigeria were surveyed for their knowledge of the major causes of maternal mortality as a prelude to…
Descriptors: Obstetrics, Nursing, Foreign Countries, Differences
Chipman, Kristi; Litchfield, Ruth – Journal of Extension, 2012
The Affordable Care Act provides impetus for Extension efforts in worksite wellness. The study reported here examined the influence of two worksite wellness interventions, newsletters and individual counseling. Surveys examined dietary and physical activity behaviors of participants pre- and post-intervention (N = 157). Descriptive statistics,…
Descriptors: Wellness, Dietetics, Nutrition Instruction, Health Education
Arnold, Randy J.; Arndt, Brett; Blaser, Emilia; Blosser, Chris; Caulton, Dana; Chung, Won Sog; Fiorenza, Garrett; Heath, Wyatt; Jacobs, Alex; Kahng, Eunice; Koh, Eun; Le, Thao; Mandla, Kyle; McCory, Chelsey; Newman, Laura; Pithadia, Amit; Reckelhoff, Anna; Rheinhardt, Joseph; Skljarevski, Sonja; Stuart, Jordyn; Taylor, Cassie; Thomas, Scott; Tse, Kyle; Wall, Rachel; Warkentien, Chad – Journal of Chemical Education, 2011
A multivitamin tablet and liquid are analyzed for the elements calcium, magnesium, iron, zinc, copper, and manganese using atomic absorption spectrometry. Linear calibration and standard addition are used for all elements except calcium, allowing for an estimate of the matrix effects encountered for this complex sample. Sample preparation using…
Descriptors: Chemistry, Spectroscopy, Biochemistry, Nutrition
