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Hydrogen: Jurnal Kependidikan Kimia

hydrogen
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Published by IKIP Mataram

ISSN : 23386487 EISSN : 26563061 DOI : -

Core Subject : Science, Education,

Chemistry Education

Hydrogen: Jurnal Kependidikan Kimia diterbitkan oleh Program Studi Pendidikan Kimia yang memuat tulisan yang diangkat dari hasil penelitian dan kajian konseptual di bidang Kimia dan Pendidikan Kimia.

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Korelasi Antara Keterampilan Proses Sains Dengan Hasil Belajar Mahasiswa Pada Praktikum Sifat Koligatif Larutan Najmah, Najmah; Khaeruman, Khaeruman; Khery, Yusran
Hydrogen: Jurnal Kependidikan Kimia Vol 2, No 2 (2014): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

Praktikum yang dilakukan sejauh ini memang sudah memiliki keterampilan proses sains untuk dinilai. Namun, penilaian yang dilakukan belum maksimal. Mahasiswa masih sangat bergantung pada koordinator praktikum, sehingga keterampilan proses sains yang dimiliki mahasiswa tidak berkembang. Pada hakikatnya keterampilan proses sains tersebut dapat meningkatkan hasil belajar. Penelitian ini bertujuan untuk mengetahui apakah ada korelasi antara keterampilan proses sains dengan hasil belajar mahasiswa pada praktikum sifat koligatif larutan. Metode penelitian ini adalah penelitian deskriptif kuantitatif. Penelitian ini dilaksanakan di kampus IKIP Mataram. Subjek pada penelitian ini adalah mahasiswa semester genap program studi pendidikan kimia, matematika dan biologi yang berjumlah 138 orang yang memprogramkan mata kuliah kimia dasar II Tahun Pelajaran 2013/2014. . Instrumen penelitian yang digunakan dalam pengumpulan data adalah lembar observasi keterampilan proses sains dan Lembar soal tes hasil belajar. Teknik analisa data untuk menghitung koefisen korelasi keterampilan proses sains dengan hasil belajar digunakan rumus pearson korelasi product moment. Hasil penelitian menunjukan bahwa keterampilan proses sains mahasiswa dalam praktikum sifat koligatif larutan memiliki korelasi positif dengan hasil belajar. Hal ini ditunjukkan oleh r sebesar 0,2897 menurut korelasi pearson product moment dan r 0,1676 dengan taraf signifikan 5%.

Karakterisasi Panjang Gelombang Tanaman Daun Bebele dan Kangkung yang Tumbuh Di Pulau Lombok Sebagai Dye Sensitized Solar Cell (DSSC) Listari, Nening; Agustini, Dwi
Hydrogen: Jurnal Kependidikan Kimia Vol 6, No 1 (2018): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (545.296 KB)

Dye Sensitized solar cells (DSSC) can use two types of coloring, namely dyesderived from organic and inorganic materials. The choice of natural dyes ispreferred by looking at the enormous potential of biodiversity in Indonesia,where there are still many untapped especially for plants that have a tendency tobe colored or contain chromophore dyes such as chlorophyll (play a role in theabsorption of light for photosynthesis). The wavelength when characterizing thedye as a solar cell must be in the visible area (400 to 800nm). In this study thenatural dyes used are bebele leaves and kangkung which grow on the island ofLombok. The wavelength obtained for fresh bebele is 553nm, 605 nm and 665nm.The wavelength obtained for fresh kangkung leaf is 664.5 nm with the highestabsorption peak. From the results of the absorption stated that natural dyes havechlorophyll a and b groups which are absorbed in the UV-Vis region 600nm to700nm which means that they absorb the red most strongly. In the measurementof current strength and efficiency with multimeters on organic dyes in a row thatis fresh bebele leaves5 μA /cm2; 0.156; fresh kangkung leaves 4.2 μA/cm2; 0,131;dried bebele leaves 4 μA/cm2; 0.13; dried kangkung leaf 3 μA /cm2; 0.088.

PENGEMBANGAN MODUL PROBLEM BASED LEARNING (PBL) BERORIENTASI GREEN CHEMISTRY UNTUK PENINGKATAN LITERASI SAINS SISWA Fauziah, Nurul; Suryati, Suryati; Mashami, Ratna Azizah
Hydrogen: Jurnal Kependidikan Kimia Vol 4, No 2 (2016): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

The aim of this study was to determine the characteristics, the feasibility practice and the effectiveness of developed module. This study used a model of development Nieveen began preliminary stages of research, prototyping stage, summative evaluation and systematic reflection and documentation. Validation of products was conducted by expert lecturers of chemistry and expert lecturers of media with the percentage of feasibility an average of 93.6% to the category of very feasible. The practice of module testing by the chemistry teachers and students of XII MIA grade and testing of learning plan. Trial by teachers got the average percentage of the feasibility is 94.75% categorized as very practice, testing students gained average percentage of the feasibility was 95% categorized as very practice. The precentage of learning plan was 95% categorized as very practice. The effectiveness of developed module obtained an average score of N-Gain students namely 0.4 categorized as moderate. Based on the percentage of feasibility and the effectiveness level, so it can be concluded that the Problem Based Learning (PBL) module oriented green chemistry in salt hydrolysis concept to improve the scientific literacy of students were feasible, practice, and effectively used to improve the scientific literacy of students.

Pengembangan Media Pembelajaran Berbasis Android Untuk Penumbuhan Literasi Sains Siswa Pada Materi Sistem Periodik Unsur Kusumawardhani, Ria; Suryati, Suryati; Khery, Yusran
Hydrogen: Jurnal Kependidikan Kimia Vol 5, No 2 (2017): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

The aims of this study were to produce android base learning media inelements periodic system subject material and to evaluate its eligibility,pratical, and effectiveness to grow student science litaracy. In form ofResearch and Development, this study was carried out by ADDIE Model(Analysis, Design, Development, Implementation and evaluation). Data wascollected by respons questionnaire, validaty questionnaire and scienceliteracy test. Data was analyzed by eligiblepercentage, eligiblecategorization, and N-gain test. Study result showed that content validity andmedia design validity was very eleigible with 81.11% and 83.97% ofeligibility respectively. Practicioner and student respon was very eligible with80.95 % and 89.02 % of eligibility respectively. Effectivity trial obtained 0.62of N-gain with moderate category. It can be concluded that android baselearning media was very eligible to applied for students science literacygrowth on elements periodic system learning effectively.

PENGEMBANGAN MODUL CONTEXTUAL TEACHING AND LEARNING (CTL) BERORIENTASI GREEN CHEMISTRY UNTUK PERTUMBUHAN LITERASI SAINS SISWA Ahmadi, Hari Prima; Suryati, Suryati; Khery, Yusran
Hydrogen: Jurnal Kependidikan Kimia Vol 4, No 1 (2016): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

Acid-base is one of topics considered difficult by students. This concept is broad, varied. Despite it is very closely related to everyday life, its application was still lacking. The development of teaching materials in the form of a module was deemed to be a solution to this problem. The aim of this research was to develop CTL module with green chemistry orientation in acid-base subject material to improve science literacy of students. This study was developed ADDIE (Analysis, Design, Development, Implementation, and Evaluation) model. The developed product was validated by three experts, a practitioner and ten high school students. Data were analyzed using percentage formula. Qualitative data in the form of comments and suggestions from validator were used as consideration to revise the developed module.Tthe effectivity of the module was assessed using N-gain test. Based on validation results, we obtained average of 86,5%, 97%, 88%, and 94,58%. Effectivity evaluation using N-gain test shows an average score of 0,5 with moderate category. Result of student attitudes towards science data has an average score of 74% with good qualifications. It was concluded that developed module prototype is effective for acid-base topic, and most likely for other topics in learning process and growing student science literacy.

Pemanfaatan Limbah Kulit Nanas (Ananas Comocus) Sebagai Sumber Asam Oksalat Untuk Meningkatkan Efektivitas Fotoreduksi Ion Cu(Ii) Terkatalisis Tio2 Hatimah, Husnul; Suryati, Suryati
Hydrogen: Jurnal Kependidikan Kimia Vol 1, No 2 (2013): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

Dalam penelitian ini telah dilakukan kajian pengaruh penambahan fotokatalis TiO2 dan Asam oksalat yang bersumber dari kulit nanas pada pH dan konsentrasi yang bervariasi, terhadap efektivitas fotoreduksi ion Cu(II) yang terkatalisis oleh TiO2. Proses fotoreduksi dilakukan dengan cara menyinari campuran yang terdiri dari larutan ion Cu(II) dan serbuk fotokatalis TiO2 tanpa maupun dengan adanya Asam oksalat dalam reaktor tertutup yang dilengkapi dengan lampu UV disertai pengadukan. Kondisi proses fotoreduksi adalah 50 mL larutan ion Cu(II) 10 ppm (0.157 mmol/L) dan Asam oksalat dengan konsentrasi yang bervariasi, dan TiO2 seberat 20 mg, dengan waktu reaksi selama 24 jam. Hasil fotoreduksi ditentukan berdasarkan selisih konsentrasi ion Cu(II) awal dengan konsentrasi ion Cu(II) sisa dalam larutan setelah proses fotoreduksi yang ditentukan dengan metode Spektrofotometri Serapan Atom (AAS).Hasil penelitian menunjukkan bahwa penambahan TiO2 dapat meningkatkan efektivitas fotoreduksi ion Cu(II) dari 9,03% menjadi 43,22%, yang diawali dengan proses adsorpsi. Adanya asam oksalat pada kulit nanas dapat meningkatkan fotoreduksi ion Cu(II) yang relatif tinggi karena asam oksalat dapat mencegah rekombinasi elektron dengan radikal OH, sehingga proses fotoreduksi Cu(II) dapat berjalan dengan optimal karena jumlah elektron yang tersedia relatif banyak. Pada pH yang bervariasi penambahan asam oksalat pada kulit nanas memberikan trend fotoreduksi ion Cu(II) yang sama dengan trend fotoreduksi ion Cu(II) tanpa adanya asam oksalat pada kulit nanas. Trend tersebut menunjukkan bahwa kenaikan pH 1 sampai 7 dapat meningkatkan fotoreduksi ion Cu(II), dan semua ion Cu(II) hilang dari larutan pada pH lebih tinggi dari 8 karena terbentuknya endapan Cu(OH)2. Fenomena ini berhubungan dengan spesiasi ion Cu(II), asam oksalat pada kulit nanas, dan permukaan fotokatalis TiO2

Pengembangan Media Animasi Interaktif Pada Materi Laju Reaksi Khaeruman, Khaeruman; Ahmadi, Ahmadi; Rehanun, Rehanun
Hydrogen: Jurnal Kependidikan Kimia Vol 3, No 1 (2015): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (325.846 KB)

Chemistry is a subject that considered as the difficult one by most of the students of senior high school since the characteristic of chemistry is microscopic that demanded the students to be able to understand the consept and then solve the problem .To help the student increasing their understanding .media is very needed. The media developed in this research is interactive Animation Media for the eleventh grade student and to test the teasibility level. The development modek used in his research is ADDIE (Analysis, design, develop, implement, evaluate). With some adaptation based on the development need. The resut of the development is interactive Animation Media in Reaction Rate Material which validation toward the result was done in two test, they are exoert test and limited group trial. There are 4 validators in this research, the are media expertise of FPMIPA IKIP Mataram and two chemistry teacher material expertise of MA NW Debok, and the subject of limited group test which was`a chemistry students an 10 students of MA NW Debok. The instment used to collect the data was questionnaire, while the data analysis by using everage percentage analysis the validation result of media expert shows that the average percentage analysis. The validation result of media expert shows that the average percentage was 76,25% and 75% which means valid/good. Validation done by the material expert shows that the average percentage was 86,25% and 91,25% which means good/valid, while the result of limited group test toword the students was 80,5% and toword the students was 87% which means that learning media which is interactive Animation Media in Reaction Rate Material is appropriate to use. It can be concluded that interactive Animation Media in Reaction Rate Material is appropriate to nuse by the teacher in teaching process.

Pengaruh Pendekatan Inquiry Based Learning Terhadap Hasil Belajar Kimia Wardani, Anita
Hydrogen: Jurnal Kependidikan Kimia Vol 1, No 1 (2013): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (176.229 KB)

Laju Reaksi merupakan salah satu materi yang dianggap sulit oleh siswa. Hal tersebut disebabkan oleh beberapa faktor yaitu: 1) materi laju reaksi yang dipelajari tergolong pada level makroskopik, mikroskopik dan simbolik 2) metode pembelajaran yang kurang bervariasi menjadi salah satu penyebab rendahnya hasil belajar siswa pada mata pelajaran kimia. Salah satu alternatif untuk mengatasi hal tersebutditerapkanpendekatan Inquiry Based Learning.Penerapan pendekatan inkuiri based learning memungkinkan siswa terlibat secara aktif menggunakan proses mentalnya untuk menemukan beberapa konsep dan prinsip materi laju reaksi yang sedang dipelajari. Tujuandaripenelitianini adalahuntukmengetahuiprosespenerapan pendekatan inkuiri based learningdan pengaruhnya terhadap hasilbelajar siswa kelas XI SMKN 3 MataramTahun Pelajaran 2012/2013 pada materi laju reaksi.Populasidalampenelitianini terdiridariduakelasdenganjumlah55 siswa.Pengambilansampeldilakukandengan teknik cluster random sampling. Pengumpulan data dilakukan melalui observasiketerlaksanaan RPP, penilaianafektifsiswa,penilaianpsikomotor siswa danteshasilbelajar. Dari hasilujicoba instrumen diperoleh 34item soal yang valid dengan tingkatreliabilitas tessebesar0,814dengankriteriasangatbaik.Analisis datahasilbelajarsiswadilakukanmelaluiujibeda(ujiZ)diperoleh Zhitumg (0,217)<Ztabel (1,96) dengan nilai rata-rata kelas eksperimen 69,38 dengan ketuntasan klasikalnya 66,66% hampir sama dengan nilai rata-rata kelas kontrol yaitu 69,96 dengan ketuntasan klasikal 62,06%. Hasil penelitian ini menunjukkan bahwa penerapan pendekatan pembelajaran IBL pada materi laju reaksi tidak berpengaruh secara signifikan terhadap hasil belajar siswa. Hal ini dibuktikan dengan nilai Zhitung (0,217) < Ztabel (1,96).

Pengembangan Pembelajaran Termokimia Berbasis Inkuiri Terbimbing Untuk Meningkatkan Literasi Sains Siswa Suryati, Suryati; Permatasary, Yuni
Hydrogen: Jurnal Kependidikan Kimia Vol 2, No 2 (2014): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

This study is aimed in developing the thermochemical learning tools based on guided inquiry that can be used in increasing the students’ science literacy. This learning tools consists of some steps that integrated to students worksheet, teacher’s book and lesson plan that dealing with 2013 curriculum. Inquiry learning is suitable to develop the students’ science literacy. This approach could help the teachers to increase students’ comprehension in lining their acknowledge with their daily life (students’ chemical science), and it could have more function for the students. So, one way to measure the students’ literacy by applying the inquiry steps as the learning achievement indicators. This research is in terms of 4-D design that consists of (1) defining, (2) designing, (3)developing and disseminating. The result was validated by two lecturers ( validators) that teaching chemical and four chemical teachers at senior high school, then it also tested in 40 SMAN 7 Mataram students through questionnaire. So, quantitative data then analyzed by percentage formula. Furthermore, qualitative data consists of some ideas, suggestions in terms of the learning tools. Based on validation result from lecturers is 86%, teachers 88%. Instruments validation literacy science result from lecturers 89%, from teachers 87%. The result from 40 students is 83%. Therefore, it can be concluded that the development learning toolsis valid to be used.

Efektivitas Penggunaan Biji Kelor (Moringa Oleífera, Lam) Sebagai Koagulan Untuk Menurunkan Kadar TDS dan TSS Dalam Limbah Laundry Hak, Ahsanul; Kurniasih, Yeti; Hatimah, Husnul
Hydrogen: Jurnal Kependidikan Kimia Vol 6, No 2 (2018): Hydrogen: Jurnal Kependidikan Kimia
Publisher : IKIP Mataram

Laundry waste contains detergent which can cause water pollution because itcontains various kinds of substances that can affect various waterparameters, especially such as TDS (total dissolved solids) and TSS (totalsuspended solids). To reduce these parameters is done by the coagulationprocess which is adding moringa seed powder as coagulant. Moringa seedscan work as a coagulant because they contain an active substance, 4-alfa-4-rhamnosyloxy-benzil-isothiocyanate. The coagulation process was carried outby varying several coagulation parameters such as the size of the coagulantpowder (Al (80-100mesh) and A2 (100mesh), stirring speed (slow, medium,and fast), settling time (15, 45 and 75 minutes) and mass ratio to samplevolume (100 mg against 100, 150 and 200 mL) .The samples used in thecoagulation process were taken by grab sampling technique and thedetermination of TDS and TSS levels was carried out by the gravimetricmethod. The data showed the size of moringa seed powder coagulant, stirringspeed, settling time and coagulant mass ratio with sample volume influencethe% decrease in TDS and TSS levels, optimum conditions on coagulantpowder size> 100 mesh, moderate stirring speed, 15 minute deposition timeand coagulant mass ratio to sample volume 1: 1 ( mg / L), where% decreasein TDS is 74.07% from 270000 mg / L to 70000 mg / L and TSS of 82.14%from 56000 mg / L to 10000 mg / L.

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Citra Ayu Dewi

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Home Page

OAI Link

Editorial Team

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Contact Name Citra Ayu Dewi

Contact Email ayudewi_citra@ikipmataram.ac.id

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Journal Mail Official j-kk.hydrogen@gmail.com

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Location Kota mataram, Nusa tenggara barat INDONESIA

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Contact Name
Citra Ayu Dewi

Contact Email
ayudewi_citra@ikipmataram.ac.id

Phone
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Journal Mail Official
j-kk.hydrogen@gmail.com

Editorial Address
-

Location
Kota mataram,

Nusa tenggara barat

INDONESIA