Articles

• Editorial: Chemical Concepts

  Temechegn Engida

  1

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• Development of a simple amino-modified silica-based colorimetric sensor for the detection of copper (II) ions in aqueous samples

  Mosotho J. George, Motiki F. Beleme, Limpho V. Moiloa

  2-15

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• Common difficulties experienced by grade 12 students in learning chemistry in Ebinat Preparatory School

  Kindu Tilahun, Mekonnen Tirfu

  16-32

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• What are the molecules doing?

  J.D. Bradley

  33-53

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• The symbolic language of substances and molecules: noise or harmony?

  J.D. Bradley

  54-68

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• Uses of systemic approach and chemist's triangle in teaching and learning chemistry: Systemic Chemistry Triangle [SCT] as a teaching & learning strategy

  A.F.M. Fahmy

  69-95

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• Enhancing first year chemistry student’s participation in practical chemistry course

  Girma W. Woyessa, Ephrem G. Demissie, Tesfa Oluma, Solomon B. Kassa

  96-109

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• Nigerian students’ self-confidence in responding to statements of chemical equilibrium concepts and principles

  Macson J. Ahiakwo

  110-122

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• Factors affecting implementation of practical activities in science education in some selected secondary and preparatory schools of afar region

  Tolessa Muleta, Mohammed Seid

  123-142

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• Teaching ‘natural product chemistry’ in Tanzania

  Malcolm S. Buchanan, Dominic P. Sumary

  143-156

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