Vol. 14 No. 4 (2026): August 2026

Articles

• Solvent Effects on Extraction Yield and Phytochemical Profile of Cassia alata L. Root Extracts

  Oktaviani Febiola, Masriani, Lukman Hadi, Aldi Tobing, Firman Shantya Budi

  DOI : https://doi.org/10.33394/hjkk.v14i4.22143
  Abstract View: 0 |

• Comparative Phytochemical Screening of Nauclea orientalis (L.) L. Leaf Extracts Using Different Solvents

  Riyan, Masriani, Rody Putra Sartika, Firman Shantya Budi

  DOI : https://doi.org/10.33394/hjkk.v14i4.22131
  Abstract View: 0 |

• Development of a Corrosion-Prevention Practicum Using Papaya Leaf Extract for Chemistry Learning

  Hanifa Maulani, Hokcu Suhanda, Asep Suryatna

  DOI : https://doi.org/10.33394/hjkk.v14i4.21828
  Abstract View: 0 |

• Influence of Solvent Polarity on Extract Yield and Phytochemical Profile of Kratom Leaves (Mitragyna speciosa)

  Anggi Nabila, Masriani, Lukman Hadi, Aldi Tobing, Firman Shantya Budi

  DOI : https://doi.org/10.33394/hjkk.v14i4.22148
  Abstract View: 0 |

• Comparative Effects of Ethanol, Ethyl Acetate, and Water on the Yield and Phytochecimal Profile of Rhizophora mucronata Leaf Extract

  Nur Intan Syafira, Masriani, Rody Putra Sartika, Aldi Tobing, Firman Shantya Budi

  DOI : https://doi.org/10.33394/hjkk.v14i4.22138
  Abstract View: 0 |

• Guided-Inquiry E-Module for Critical Thinking in Reaction-Rate Learning

  Rini Rianti, Muntari, Sunniarti Ariani

  DOI : https://doi.org/10.33394/hjkk.v14i4.22218
  Abstract View: 0 |

• Kinetics and Mass Transfer of Methylene Blue Adsorption onto EDA/Cu2+-Functionalized Fly Ash Silica Xerogel

  Faiqa Haura Tsagifa, Edi Nasra, Hary Sanjaya, Sherly Kasuma Warda Ningsih, Muhammad Iqbal Saputra Gemasih

  DOI : https://doi.org/10.33394/hjkk.v14i4.21972
  Abstract View: 0 |

• Development of a Peanut Shell-Derived Chitosan–Activated Carbon Composite as a Sustainable Adsorbent for Permanganate (MnO₄⁻) Removal from Aqueous Solution

  Junita Br Sembiring, Diana Sylvia, Maya Sari Ananda Pohan

  DOI : https://doi.org/10.33394/hjkk.v14i4.21354
  Abstract View: 0 |

• Quantitative Measurement of Flavonoid Content of Kecapi Leaves (Sondoricum koetjape Merr.)

  Rahma Tiara Alfatiha, Fakhrotun Nisa

  DOI : https://doi.org/10.33394/hjkk.v14i4.21062
  Abstract View: 0 |

• Development of Supplementary Teaching Materials Based on Local Wisdom of The Sungai Kakap Community on Material Form, Substance, and Its Changes

  Siti Mariyam, Hairida, Eni Mayasari

  DOI : https://doi.org/10.33394/hjkk.v14i4.21916
  Abstract View: 0 |

• Development of Discovery Learning-Based Chemistry Learning E-Modules on Atomic Structure Materials to Improve Learning Outcomes of Class X Students

  Windi Sahayani Purba, Agus Kembaren

  DOI : https://doi.org/10.33394/hjkk.v14i4.21885
  Abstract View: 0 |

• The Effectiveness of Using Google Sites-based Learning Media on Learning Outcomes in Thermochemistry

  Dera Ananda Fitri, Erlina, Rachmat Sahputra

  DOI : https://doi.org/10.33394/hjkk.v14i4.21764
  Abstract View: 0 |

• Aligning Chemistry Learning with Medical Laboratory Technology Vocational Competencies: A Needs and Curriculum Accommodation Analysis

  Ridha Ariandini Rahmani, Sjaeful Anwar, Gun Gun Gumilar

  DOI : https://doi.org/10.33394/hjkk.v14i4.21616
  Abstract View: 0 |

• The Effect of Deep Learning Approach Assisted by Quizizz on Students’ Learning Achievement in Hydrocarbon Topics

  Romadhona Pandiangan, Dewi Syafriani

  DOI : https://doi.org/10.33394/hjkk.v14i4.20844
  Abstract View: 0 |

• Implementation of Problem-Based High School Chemistry Textbooks on Improving Student Learning Outcomes and Motivation on Acid-Base Subject Materials

  Nia Ramadhani Siregar, Ratu Evina Dibyantini

  DOI : https://doi.org/10.33394/hjkk.v14i4.20676
  Abstract View: 0 |

• Development of Chemistry Tetrahedron Mahaffy Based on Scratch Platform as Learning Media on Hydrocarbon Topics to Strengthen Systems Thinking Skills of High School Students

  Hafidz Fiqih Kurnia Putra, Rr. Lis Permana Sari

  DOI : https://doi.org/10.33394/hjkk.v14i4.21943
  Abstract View: 0 |

• Effectiveness of Discord-Supported Flipped Guided Inquiry Learning on Phase F Students’ Buffer-Solution Outcomes

  Anesa Putri, Mawardi Mawardi

  DOI : https://doi.org/10.33394/hjkk.v14i4.21884
  Abstract View: 0 |

• Development of a Process-Oriented Guided Inquiry Learning (POGIL)- Based Learning Module on Buffer Solutions for Grade XI Senior High School Students

  Adilla Putri Ramadhani, Elvy Rahmi Mawarnis

  DOI : https://doi.org/10.33394/hjkk.v14i4.21598
  Abstract View: 0 |

• The Effect of the Project-Based Learning Model on Students' Learning Outcomes and Learning Activities

  Mahira Maya Sofa, Ajat Sudrajat

  DOI : https://doi.org/10.33394/hjkk.v14i4.21074
  Abstract View: 0 |

• The Effectiveness of Project-Based Learning in Chemistry Learning: Conceptual Understanding and 21st Century Skills

  Aura Nawang Wulan Aura, Dewi Matius, Khotijah Mahmuda Widi Riani, Yofita Jelita Linda Sari Dakhi, Akhmad Syaikah Nur Fad'ah, Wirhanuddin Wirhanuddin

  DOI : https://doi.org/10.33394/hjkk.v14i4.20994
  Abstract View: 0 |

• Development of Electronic Student Worksheets Integrated Guided Inquiry of Science Literacy to Increase Literacy HOTS in Reaction Rate Topic

  Shafiah Azzahra, Retno Dwi Suyanti

  DOI : https://doi.org/10.33394/hjkk.v14i4.20703
  Abstract View: 0 |

• Effect of Glycerol Addition as an Entrainer in Extractive Distillation for Bioethanol Purification from White Glutinous Rice Fermentation

  Zuinan Dakwa, Yeti Kurniasih, Hulyadi, Yusran Khery

  DOI : https://doi.org/10.33394/hjkk.v14i4.20996
  Abstract View: 0 |

• The Influence of the Teams Games Tournament (TGT) Cooperative Learning Model on Grade X Students’ Learning Outcomes in Learning the Basic Laws of Chemistry at SMAN 1 Sungayang

  Kurnia Hayati, Mimi Herman

  DOI : https://doi.org/10.33394/hjkk.v14i4.20687
  Abstract View: 0 |