Vol. 9 No. 2 (2020)

Articles

• Phytochemical Screening and Antioxidant Activity Test of Red Onion (Allium ascolinicum L.) Extract Variety of Palu Valley

  Rimah Juwita, Daud K. Walanda, Supriadi Supriadi

  63-69

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• Determination of Total Flavonoid Contents and Antioxidant Activity of Leucaena Leucocephala Leaves's Extract

  Taupik Hidayat, Baharuddin Hamzah, Minarni R. Jura

  70-77

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• Misconception Reduction by Implementing Contextual Teaching and Learning (CTL) Approach on Salt Hydrolysis Material in Grade XI at SMA 1 Palasa

  Moh. Raisul, Tahril Tahril, Afadil Afadil

  78-86

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• The Implementation of Demonstration Method to Students Learning Outcomes and Interests on Colloid Materials at Class XI Science of SMA Negeri 1 Kasimbar

  Megawati Megawati, Suherman Suherman, Purnama Ningsih

  87-92

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• Antioxidant Activity Test of Ethanol and Water Extracts of Celery (Apium graveolens L.)

  Nurmiati Nurmiati, Siti Nuryanti, Tahril Tahril

  93-101

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• Analysis of Flavonoid Levels in Extract of Gambas Fruit (Luffa acutangula L) Originating from the Village of Posona District Parigi Moutong

  Aharudin Aharudin, Kasmudin Mustapa, Minarni R. Jura

  102-106

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• Adsorption of Lead(II) Ions using Coconut Fiber’s (Cocos nusifera L.) Activated by Sodium Hydroxide

  Gatut A. Wardani, Dea D. Pamungkas, Winda T. Wulandari, Fajar Setiawan, Estin Nofiyanti

  107-110

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• Analysis of Student Conception of Atomic Structure at the State SMA in Palu

  Gavrila Gavrila, Suherman Suherman

  111-117

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• Boraxs and Formalin Analysis in the Shumai Treated in Palu City

  Areeya Milehman, Mery Napitupulu

  118-124

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• Analysis of Hard Water Coagulation in Water Sources of Kawatuna using Aloe Vera Plant

  Baby Melyta Pallar, Paulus Hengky Abram , Purnama Ningsih

  125-132

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