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INDONESIA
Jurnal Pendidikan Kimia (JPKim)
Published by Universitas Negeri Medan
ISSN : 20853653     EISSN : 25493116     DOI : 10.24114
Core Subject : Science, Education, Social,
Biochemistry, Genetics & Molecular Biology Chemistry Education Environmental Science
Jurnal Pendidikan Kimia (JPKim) yang dikelola Program Pascasarjana Universitas Negeri Medan terbit 3 kali setahun, yakni bulan April, Agustus dan Desember. JPKim menerbitkan artikel ilmiah hasil-hasil penelitian pendidikan kimia dan kimia fundamental. JPKim juga menerbitkan artikel Review terkait Pendidikan Kimia dan Kimia.
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Articles 267 Documents
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Application of learning model with virtual lab and motivation in learning chemistry Gulmah Sugiharti; Eva Rofinta Limbong
Jurnal Pendidikan Kimia (JPKim) Vol 10, No 1 (2018): April
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (498.879 KB) | DOI: 10.24114/jpkim.v10i1.9676

Abstract

Abstract:            This study aims to determine whether there is interaction between learning models and motivation to student learning outcomes. Samples were taken by purposive as much as 2 classes, experimental class I was treated with Problem Based Learning model using Virtual Lab and experiment II class was treated with PBL model using Real Lab on acid base titration material. Student learning outcomes data obtained using the test results of learning, while the data for motivation to learn through questionnaire motivation to learn. The data analysis technique uses two-way variance analysis and Fcount test. The results showed: 1) Hypothesis test obtained Fcount (A) and (B) equal to 18,551> Ftabel (0,05) (1,48) = 4,04 hence there is interaction between learning model using virtul lab and motivation learn to result learn chemistry of students. 2) Highly motivated students, taught by PBL model using Virtual Lab gives the highest average learning result (75,536 10,10), whereas taught by PBL model using real lab give average (75,2,43). 3) Students with low learning motivation, taught by PBL model using Virtual Lab give the average of learning result (71,59 10,74), whereas taught by PBL model using Real Lab give average (72,32 10,94). Thus it is concluded that there is an interaction between learning model and learning motivation toward chemistry learning result, and students who have high learning motivation are taught by PBL model using virtual lab give higher mean, whereas students who have low learning motivation are taught by PBL model using virtual lab provides a low average learning outcome.Keywords:learning outcomes, motivation, PBL model, virtual lab, real lab
Pemanfaatan Arang Aktif Dari Batubara Kotor (Dirty Coal) Sebagai Adsorben Ion Logam Mn(II) dan Ag(I) Saibun Sitorus; Meliani Pijer
Jurnal Pendidikan Kimia (JPKim) Vol 7, No 2 (2015): Agustus
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (640.652 KB) | DOI: 10.24114/jpkim.v7i2.4274

Abstract

Abstract. The research has done about use of activated carbon as an adsorben of dirty coal in metal ions Mn(II) and Ag(I). This research was intended to find the effects of pH value, contact period and to determine the maximum adsorptive capacity Mn(II) and Ag(I) metal ions by dirty coal activated carbon. The adsorption process have been variate of pH 2, 3, 4, 5, 6, 7 and 8; contact time variation 15, 30, 45, 60 and 75 minutes; concentration variation 30, 45, 60, 75, 105, and 120 mg/L. The adsorption capacity determinate of Mn(II) and Ag(I) metal ions by dirty coal activated carbon used Isoterm Langmuir. The analysis of metal ions Mn(II) and Ag(I) concentration by dirty coal activated carbon by using atomic absorption spectrophotometer (AAS). The result of this research shows that dirty coal activated carbon could adsorb metal ion Mn(II). The optimum condition was achieved at the pH 6 with a number of metal ions that adsorbed at 23,4265 mg/L, with optimum period of 30 minutes with a number of metal ions that adsorbed at 23,9939 mg/L, as for optimum concentration was achieved at the cosentration 90 mg/L with a number of metal ions that adsorbed at 56,5518 mg/L and metal ion adsorption capacity of Mn(II) adsorbed by the dirty coal activated carbon could reach 34,4827 mg  Mn/g. As for the adsorption of metal ions Ag(I) the optimum condition was achieved at the pH 7 with a number of metal ions that adsorbed at 20,5000 mg/L. Keywords: dirty coal, activated carbon, adsorption, metal ions Mn(II), metal     ions Ag(I)
Synthesis and characterization of gold nanoparticles using fruit extract of Crescentia cujete L Fauzan Amin; Micha Mahardika; Nada Morisca
Jurnal Pendidikan Kimia (JPKim) Vol 11, No 3 (2019): December
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (267.485 KB) | DOI: 10.24114/jpkim.v11i3.15737

Abstract

Nanoparticles play important role in biotechnology such as food and drug industries. Gold nanoporticles(Au-NPS) have been wdely used in any drug therapies like drug delivery system for cancer, tumor, and diabetes treatment. Recently, Au-NPS have been devoleped to increase drug selectivity between tumor and normal cells. In the present studies, we use the fresh fruit ekstract (FFE) of crescentia cujete L mediated blue green alga for the synthesis of Au-NPS. The characterization of Au-NPS was carried out by using UV-Vis spectroscopy, Fourier transform infrared spectroscopy (FTIR), and Transmission Electron spectroscopy (TEM). UV-VIS spectrometry indicated formation of nanoparticles which produces an intense absorbance peak at 531 nm. FTIR reveales the functional group involved in reduction and stabilization of Au-NPS. TEM have shown the morphology of Au-NPS with mean size 10,11 nm.Keywords: Crescentia cujete; gold nanoparticles; green alga
Antimalarial activity and phitochemical analysis from Suruhan (Peperomia pellucida) extract Nurhayati Bialangi; Moh Adam Mustapa; Yuszda K Salimi; Ari Widiantoro; Boima Situmeang
Jurnal Pendidikan Kimia (JPKim) Vol 8, No 3 (2016): Desember
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (565.757 KB) | DOI: 10.24114/jpkim.v8i3.5817

Abstract

Abstract. Infectious and parasitic diseases is one of various disease that the most common. Based on data from the World Health Organization (WHO) in 2011, infectious and parasitic diseases become the third largest cause of death in the world. One of the plants that have potential as an antimalarial is suruhan (Peperomia pellucida). The purpose of this study is to test antimalarial activity against Plasmodium falciparum and analysis photochemistry consituen from extract suruhan. Antimalarial activity test using Desjardin method. Extraction was done by using maceration wuth methanol as a solvent and fractionation using partition methods. Results of phytochemical screening revealed the presence of alkaloids, flavonoid, steroid, saponins and triterpenoid test results antimalarial activity fraction of n-hexane, ethyl acetate and water show IC50 values are 12.80, 2.90 and 10.74 mg/ mL respectively.Keyword: Peperomia pellucida, suruhan, antimalarial
The development of teaching materials oriented to critical thinking skills for chemistry class XI high school Risma Siahaan; Marham Sitorus; Saronom Silaban
Jurnal Pendidikan Kimia (JPKim) Vol 13, No 1 (2021): April
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (295.289 KB) | DOI: 10.24114/jpkim.v13i1.24145

Abstract

This study aims to determine the feasibility of teaching materials oriented critical thinking ability grade XI SMA developed. This research includes research and development with 3D development model (define, design and develop). The teaching materials developed were validated based on aspects of material feasibility, language and media by experts using validation sheets in accordance with BSNP standards and then the validated teachng materials were distributed to two teachers and grade XI students at Sultan Agung Private High School and SMAN 1 Pematangsiantar to find out the response of teachers and students using questionnaires. The results of the study found that expert validation of teaching materials developed has an average score of 4.17 in terms of content feasibility, 4.20 for the aspect of presentation feasibility, 4.33 for the linguistic aspect and 4.19 from the aspect of graphation. While students' response to critical thinking ability-oriented module teaching materials had average scores of 3.80 and 3.82 and teacher responses averaged a score of 4.27, judging by interest indicators, material indicators and language indicators. These results show that the critical thinking ability-oriented teaching materials developed have met valid and good criteria for use.Keywords: Teaching materials, Critical thinking skills, Chemical equilibrium, 3D models
HUBUNGAN POLA MAKAN DENGAN RESIKO KANKER PAYUDARA (Studi Kasus pada Rumah Sakit dan Klinik Onkologi di Banda Aceh) Eva Fitriyaningsih; Nurliana Nurliana; Ummu Balqis
Jurnal Pendidikan Kimia (JPKim) Vol 6, No 3 (2014): Desember
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (278.799 KB) | DOI: 10.24114/jpkim.v6i3.5539

Abstract

Abstract The research was aim to investigate the relation between food animal origin dietary patterns and breast cancer in Banda Aceh. This case-control study compared the dietary pattern of food animal origin  between 45 breast cancer patients and 45 age-matched controls. Six  dietary patterns were difined by food frequency questioner (FFQ): food animal origin, preserved of food animal origin, processing of food, fats and oils, vegetables and fruits patterns. Preserved of food animal origin were significantly associated with the incidence of breast cancer with an odds ratio (OR) 5.86 [95% confidence interval (CI) = 1.49-21.65] respectively; p = 0.013; while food animal origin, processing of food. fats and oils, vegetables and fruits dietary patterns were not associated with the incidence of breast cancer. The conclution of the research that salt fish and keumamah  play an important role of the assosiation.Keywords : Breast cancer, dietary patterns, food animal origin
Implementation of experiment method to improve student chemistry achievement based on rate of reaction material Nova Irawati Simatupang
Jurnal Pendidikan Kimia (JPKim) Vol 9, No 2 (2017): Agustus
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (722.504 KB) | DOI: 10.24114/jpkim.v9i2.7622

Abstract

Penelitian ini bertujuan untuk meningkatkan hasil belajar kimia siswa pada materi laju reaksi melalui penerapan metode eksperimen. Metode penelitian yang digunakan adalah metode kuantitatif dengan pendekatan asosiatif. Populasi penelitian ini adalah seluruh Kelas VIII SMP PENABUR Secondary Tanjung Duren tahun ajaran 2016/2017 yang berjumlah 56 orang dan terdiri dari 3 kelas. Sampel dipilih secara acak dengan jumlah masing-masing 17 siswa. Instrumen yang digunakan adalah soal essay test. Uji hipotesis dilakukan dilakukan dengan uji t-test dengan taraf signifikansi 0.05 menggunakan aplikasi spss. Dari hasil penelitian diperoleh bahwa melalui uji hipotesis diperoleh nilai sig 0.033 < 0.05; data penelitian terdistribusi normal dengan nilai sig 0.843 > 0.05, serta menunjukkan homogenitas dengan nilai sig. = 0.953 > 0.05. Terdapat peningkatan hasil belajar kimia siswa melalui penerapan metode eksperimen sebesar 77,5%.Kata kunci: hasil belajar, kimia, laju reaksi, metode eksperimen
Pengaruh Software Macromedia Flash Pada Pembelajaran dengan Model Kooperatif Tipe Team Assisted Individualization Terhadap Hasil Belajar Kimia Siswa Pada Pokok Materi Termokimia Nurfajriani Nurfajriani; Zuhairiah Nasution
Jurnal Pendidikan Kimia (JPKim) Vol 7, No 3 (2015): Desember
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (597.891 KB) | DOI: 10.24114/jpkim.v7i3.4268

Abstract

Abstract. This study aims to determine the effect of Macromedia Flash software on cooperative learning TAI (Team Assisted Individualization) on learning outcomes of students in the subject Thermochemistry. The population in this study were all students of class XI SMA Negeri 1 Stabat IA class on academic year of 2010/2011 consisting of 4 classes. Samples were taken by random sampling which consisted of the experimental class I and experiment II. The experimental class conduct with a model of cooperative learning TAI type of media with the use of Macromedia Flash and the experimental class II applied by cooperative learning TAI without media. The instrument used was in the form of multiple-choice test of 20 items that have been valid. Then test the hypothesis using a different test (t test). Research results obtained average value pretest experiment class I is 12.5 and the average value of the experimental class II pretest was 17.36. After the different treatment given to both classes of the average values obtained posttest experimental class I was 71.25 and the average value posttest experimental class II is 61.39. The hypothesis was tested by t test with results tcount> ttable (2.8125> 1.669) which means that the hypothesis that "there is the influence of Macromedia Flash software on the model of cooperative learning TAI type on learning outcomes of students on the subject of chemical thermochemical" unacceptable. Keywords: TAI, macromedia flash, hasil belajar
Pengaruh Penerapan Multimedia Camtasia Studio dan Media Power Point Terhadap Aktivitas dan Hasil Belajar Siswa Pada Materi Struktur Atom Husuwatul Masyithah; Zainuddin Muchtar; Mahmud Mahmud
Jurnal Pendidikan Kimia (JPKim) Vol 8, No 2 (2016): Agustus
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (393.477 KB) | DOI: 10.24114/jpkim.v8i2.4440

Abstract

Abstract. This research aims to know the effect of application camtasia studio multimedia and power-point media toward activities and student learning outcomes in the atomic structure topic. The population in this research were all of tenth grade students of SMA Swasta Ar Rahman Medan as much as 2 classes of 60 people, divided into two classes of samples with total sampling. The research data were collected from the sample is in the form of student learning activity data derived from observation and questionnaire, and student learning outcomes obtained from tests of learning outcomes in the form of multiple choice of 20 questions with a reliability of 0.832 (very high). Tests have been conducted in the form requirements of normality and homogeneity test, the result that normal and homogeneous data. The hypothesis was tested with General Linear Model (GLM) at a significance level of 0.05 using SPSS 21 for windows. Based on data analysis and hypothesis testing are carried out found that: (1) There is a significant difference from the application of Camtasia studio multimedia and power-point toward the learning outcomes of students in the atomic structure topic, which is shown by sig. (P) 0.026 and tcount (2,291) ; (2) There are differences in students' learning activities of the application Camtasia studio multimedia and power-point media in the atomic structure topic, which is shown by sig. (P) 0,000 and mean of experiment-1 (77,69) > mean of experiment-2 (74,35); (3) There was a significant interaction between the media applied learning with students learning activities in influencing student learning outcomes in the atomic structure topic, which is shown by sig. (P) 0,000.Keywords: camtasia studio multimedia, power point media, student activities, learning outcomes, atomic structure
Iron Fortification and bioavailibility of homemade tempeh with sesame seed Fauzan Amin; Micha Mahardika; Dianastya Yuniarti
Jurnal Pendidikan Kimia (JPKim) Vol 12, No 3 (2020): December
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (266.418 KB) | DOI: 10.24114/jpkim.v12i3.21164

Abstract

Iron deficiency anemia is caused by the low intake of iron from foods. The purpose of this research was to make fortified tempeh using sesame seed with a high potential utility as iron fortificant. The iron bioavailability was carried out in vitro  by simulating human digestion for raw and cooked tempeh. The iron fortificant added were 0, 10, 20, 25, 30 ,40 and 50% of sesame seed to substitute 100 grams of  soybeans. The results of this study showed that the highest Fe content of 0.4539 mg was obtained by replacing 50% soybean with sesame seed. But after cooking, there is a decrease in boiled for 10, 20, 30,40,50% variants and increase in fried for 0, 10, 25, 30% variants.Keywords: Anemia, Tempeh, Fortification, Sesame seed

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