Vol. 13 No. 2 (2021): August

Articles

• Improving chemical learning outcomes with explicit instruction learning models with quizizz evaluation media

  Bropson Minanlarat, Leony Sanga Lamsari Purba, St Fatimah Azzahra

  94-102

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  Abstract View: 330, PDF Download: 251, DOI: https://doi.org/10.24114/jpkim.v13i2.26977

• Development of student worksheet for blended learning based guide inquiry and science process skill in reduction and oxidation reaction

  Sinda Febrilia Miharti, Harizon Harizon, Zurweni Zurweni

  103-112

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  Abstract View: 447, PDF Download: 413, DOI: https://doi.org/10.24114/jpkim.v13i2.26979

• Development of PBL-STEM-based E-LKPD to improve students' science literacy skills on reaction rate materials

  Rina Safitri, Haryanto Haryanto, Harizon Harizon

  113-129

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  Abstract View: 1036, PDF Download: 918, DOI: https://doi.org/10.24114/jpkim.v13i2.26980

• Microsoft teams 365 and online learning: The student™s perception

  Leony Sanga Lamsari Purba

  130-136

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  Abstract View: 1365, PDF Download: 772, DOI: https://doi.org/10.24114/jpkim.v13i2.26981

• Determination of phenolic contents and antioxidant activity test of ethanol extract of Sirih merah (Piper crocatum Ruiz & Pav.) leaves using the DPPH method

  Kasta Gurning, Sifikal Lumbangaol, Risanti F. R Situmorang, Saronom Silaban

  137-142

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  Abstract View: 690, PDF Download: 377, DOI: https://doi.org/10.24114/jpkim.v13i2.26984

• Stability of Styrax benzoin extract and fraction with the addition of glycerol and tween 80

  Dedi P Simatupang, Nora Susanti, Jamalum Purba

  143-150

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  Abstract View: 401, PDF Download: 439, DOI: https://doi.org/10.24114/jpkim.v13i2.26986

• Antibacterial activity test of Simargaolgaol (Aglaonema modestum Schott ex Engl) leaves extract against Escherichia coli and Salmonella typhi bacteria

  Tiurma Solomasi Zega, Putri Mandaoni Pakpahan, Rahmayani Siregar, Givinda Sitompul, Saronom Silaban

  151-158

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  Abstract View: 524, PDF Download: 531, DOI: https://doi.org/10.24114/jpkim.v13i2.26989

• Paper making and characterization from waste coconut and tofu dregs

  Erdiana Gultom, Hestina Hestina, Nova Florentina, Barita Aritonang

  159-171

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  Abstract View: 766, PDF Download: 826, DOI: https://doi.org/10.24114/jpkim.v13i2.27028