Hydrogen: Jurnal Kependidikan Kimia最新文献_第6页

Upaya Menurunkan Kadar Ion Logam Besi Pada Air Sumur Dengan Memanfaatkan Arang Ampas Tebu

Hydrogen: Jurnal Kependidikan Kimia Pub Date : 2019-06-27 DOI: 10.33394/HJKK.V5I2.1590

Dahlia Rosma Indah, Hendrawani Hendrawani

{"title":"Upaya Menurunkan Kadar Ion Logam Besi Pada Air Sumur Dengan Memanfaatkan Arang Ampas Tebu","authors":"Dahlia Rosma Indah, Hendrawani Hendrawani","doi":"10.33394/HJKK.V5I2.1590","DOIUrl":"https://doi.org/10.33394/HJKK.V5I2.1590","url":null,"abstract":"The levels of iron metal ions in the well water can cause health problems,causing the yellow color on the walls of the bathroom tub and the yellowspots on the clothes. One way of water treatment is by adsorption techniqueusing charcoal from bagasse. The first step is to first determine the level ofiron metal ions in the well water in the village of Palempat, BatulayarDistrict, West Lombok. Furthermore, the well water is contacted with sugarcane bagasse. The manufacture of amphibians includes the samplepreparation process, wash with water, drying in the sun, and the refining at250ºC for 2.5 hours then sieved. The sugarcane bagasse that has been putinto 100mLsampelair well with a mass of 2 grams of adsorbent. Samples werethen stirred at contact time variations of 30, 60, 90, 120 and 150 minutes at180 rpm using a batch system. The best contact time used to calculate theefficiency of decreasing iron metal ion content is by calculating the differenceof iron metal ions before adsorption and after adsorption using charcoal ofbagasse. From the research, it was found that iron metal ion content in thesample was 0.1683 ppm. The optimum contact time on iron metal ionadsorption is at 120 minutes contact resulting in optimum adsorptionefficiency in iron metal that is 65.83%.","PeriodicalId":346446,"journal":{"name":"Hydrogen: Jurnal Kependidikan Kimia","volume":"233 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115474273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Development Of Chemistry Virtual Laboratory On Colloidal System To Improve Generic Science Skills 开发胶体系化学虚拟实验室提高通用科学技能

Hydrogen: Jurnal Kependidikan Kimia Pub Date : 2019-06-27 DOI: 10.33394/HJKK.V5I2.1593

Khaeruman Khaeruman, Darmatasyah Darmatasyah, Hulyadi Hulyadi

引用次数: 1

Pengembangan Media Pembelajaran Kimia Berbasis Android Untuk Penumbuhan Literasi Sains Siswa Pada Materi Reaksi Redoks Dan Elektrokimia 以Android为基础的化学学习媒体促进学生科学素量物质的氧化和电化学反应

Hydrogen: Jurnal Kependidikan Kimia Pub Date : 2019-06-27 DOI: 10.33394/HJKK.V5I2.1588

Arifin Harianto, S. Suryati, Yusran Khery

{"title":"Pengembangan Media Pembelajaran Kimia Berbasis Android Untuk Penumbuhan Literasi Sains Siswa Pada Materi Reaksi Redoks Dan Elektrokimia","authors":"Arifin Harianto, S. Suryati, Yusran Khery","doi":"10.33394/HJKK.V5I2.1588","DOIUrl":"https://doi.org/10.33394/HJKK.V5I2.1588","url":null,"abstract":"The aims of this study were to produce android base chemistrylearning media prototype and evaluate its elibibility andeffectiveness on student science literacy growing on redox reactionand electrochemistry subject material. In form of research anddevelopment, this study was carried out by ADDIE (Analysis,Design, Development, Implementation, dan Evalution)model ofinstructional development. Data was collected by content anddesign validation questionnaire, practitioner and student respondquestionnaire, and science litracy test. Data was analyzed byelegiibility percentega and categories and N-gain test. Study resultshowed that media design and content validity was very eleigiblewith 80 % of eligibility percentage. Practitioner and studentsrespond was very eleigible with 82.22 % and 86.35 % of eligibilitypercentage average respectively. This media effectiveness onstudent literacy growing was proven by N-gain value 0.65 % withfair category. It can be concluded that android base chemistrylearning media that developed was very eligible for chemistylearning application and grow student science literacy on redoxreaction and electrochemistry subject material effectively.","PeriodicalId":346446,"journal":{"name":"Hydrogen: Jurnal Kependidikan Kimia","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129023995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 16

PENGARUH PRAKTIKUM BERWAWASAN LINGKUNGAN DENGAN MODEL INKUIRI TERHADAP SIKAP ILMIAH DAN HASIL BELAJAR 实习对环境的影响与科学态度和学习成果的潜伏期模型

Hydrogen: Jurnal Kependidikan Kimia Pub Date : 2019-06-27 DOI: 10.33394/HJKK.V5I2.1591

Siti Maesarah, Baiq Asma Nufida

{"title":"PENGARUH PRAKTIKUM BERWAWASAN LINGKUNGAN DENGAN MODEL INKUIRI TERHADAP SIKAP ILMIAH DAN HASIL BELAJAR","authors":"Siti Maesarah, Baiq Asma Nufida","doi":"10.33394/HJKK.V5I2.1591","DOIUrl":"https://doi.org/10.33394/HJKK.V5I2.1591","url":null,"abstract":"This study aims to determine the effect of the experiment based environmentalon scientific attitude of the student and learning achievement on acidandalkali subject. This study was quasi-experimental with Posttest-Only ControlGroup Design. The sample consists of two intact group, experimental group(learning by experiment based environmental method) and control group(learning by traditional method) choosen by purposive sampling technic. Datacollection of scientific attitude using questionnaires and observation sheets,while learning outcomes data collected by an objective test. Data analyzedwith descriptive statistic and non parametric statistic (Mann Whitney test).The result show that student’s scientific attitude score of experiment group is83.35 at very high category while the control group is 77.82 at the highcategory. The average score of learning achievement 86.40 for experimentalgroup higher than control groupis 70.87. Beside that Mann-Whitney testobtained sig. less than 0.05 (p <0.005). Thus, it can be concluded that theexperiment based environmental methods affect the scientific attitude andstudent learning achievement on acid-base subject.","PeriodicalId":346446,"journal":{"name":"Hydrogen: Jurnal Kependidikan Kimia","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123483490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Pengembangan Media Pembelajaran Berbasis Android Untuk Penumbuhan Literasi Sains Siswa Pada Materi Sistem Periodik Unsur 以Android为基础的学习媒体发展，提高学生的科学知识在元素周期性系统的材料上

Hydrogen: Jurnal Kependidikan Kimia Pub Date : 2019-06-27 DOI: 10.33394/HJKK.V5I2.1589

Ria Kusumawardhani, S. Suryati, Yusran Khery

引用次数: 9

Pengaruh Model POGIL (Process Oriented Guided Inquiry Learning) Terhadap Keterampilan Berpikir Kreatif dan Pemahaman Konsep Siswa Pada Materi Redoks 对学生氧化还原材料的创造性思维技能和概念理解过程的影响

Hydrogen: Jurnal Kependidikan Kimia Pub Date : 2019-01-23 DOI: 10.33394/HJKK.V6I2.1605

Malisa Aprilian, Muhali Muhali, Citra Ayu Dewi

{"title":"Pengaruh Model POGIL (Process Oriented Guided Inquiry Learning) Terhadap Keterampilan Berpikir Kreatif dan Pemahaman Konsep Siswa Pada Materi Redoks","authors":"Malisa Aprilian, Muhali Muhali, Citra Ayu Dewi","doi":"10.33394/HJKK.V6I2.1605","DOIUrl":"https://doi.org/10.33394/HJKK.V6I2.1605","url":null,"abstract":"This study aims to determine the effect of POGIL to creative thinking skilland conceptual understanding of students at senior high school. This researchform of quasi experimental was carried out by postest-only control groupdesign. Research conducted in SMAN1 Montong Gading using sample whichdetermined by saturated sampling technique, 24 number of XA class studentsas experiment class, and 24 number of XB class students as control class.Creative thinking skills data was collected by observation sheets andconceptual understanding data by reasoning multiple choices test. The resultsshowed that the average creative thinking skill of experimental class at the 1st,2nd, and 3rdmeeting was 64.388, 72.656, and 79.752.The mean of creativethinking skill of the control class at the 1st, 2nd, and 3rdmeeting was 59.765,67.447, and 73.476.The hypothesis test result of creative thinking skill datausing independent sample t-test it is known that significance value of t-countwas 0.040 < 0.05, and conceptual understaning data by paired sample t-test itis known that significance value of t-count was 0.000 < 0.05. So that, there isinfluence of POGIL model to student creative thinking skill and conceptualunderstanding.","PeriodicalId":346446,"journal":{"name":"Hydrogen: Jurnal Kependidikan Kimia","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126823527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Pengaruh Waktu Adsorpsi Minyak Jelantah Sebagai Bahan Pembuatan Biodiesel Dengan Tanah Liat Terhadap Kualitas Biodiesel Jelantah的压缩时间将其转化为粘土级生物柴油

Hydrogen: Jurnal Kependidikan Kimia Pub Date : 2019-01-23 DOI: 10.33394/HJKK.V6I2.1606

Ahmadi Ahmadi, Ika Suyanti, Sri Astuti Tikrahsari, Miftahul Aini

{"title":"Pengaruh Waktu Adsorpsi Minyak Jelantah Sebagai Bahan Pembuatan Biodiesel Dengan Tanah Liat Terhadap Kualitas Biodiesel","authors":"Ahmadi Ahmadi, Ika Suyanti, Sri Astuti Tikrahsari, Miftahul Aini","doi":"10.33394/HJKK.V6I2.1606","DOIUrl":"https://doi.org/10.33394/HJKK.V6I2.1606","url":null,"abstract":"Population growth and industrial development cause oil fuel consumptionincreases, so availability will thinning because it cannot be renewed. So toovercome that the government issued Presidential Decree No.10 of 2006concerning Development of Vegetable Fuels. Biodiesel is one of themrenewable alternative energy sources which are processed from vegetable oilswith use alcohol and NaOH as catalysts through the transesterificationprocess. Used cooking oil is one source of vegetable oil that can used as rawmaterial for making biodiesel through the process transesterification. But theuse of used cooking oil directly without through the adsorption process willaffect the quality of the biodiesel produced. The purpose of this study is todetermine the effect of adsorption time used cooking oil for the quality ofbiodiesel produced from used cooking oil. This research aimed to know thereis or no effect of odsorption time of cooking oil using the clay towardsbiodiesel quality. Object of this research used cooking oil which is adsorptedwith varieties time of adsorption was 0 hour (Control), 12 hours, 36 hoursand 48 hours. Based on the result of research showed that adsorption timehas effect towards quality, where high adsorption time was 12 hours. Qualityof biodiesel has been suitable with SNI. The quality was dencity 0,860 gr/cm3,water degree 0,035% vol, flame coordinate 170oC and acid number 0,71 mgKOH/g oil % the result of biodiesel 55,29%.","PeriodicalId":346446,"journal":{"name":"Hydrogen: Jurnal Kependidikan Kimia","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127729405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pengembangan E-modul Interaktif Berbasis Android dan Nature of Science Pada Materi Ikatan Kimia dan Gaya Antar Molekul Untuk Menumbuhkan Literasi Sains Siswa 以Android为基础的互动e模块的开发和科学的本质，以分子间的化学键和力为基础，培养学生的科学素常

Hydrogen: Jurnal Kependidikan Kimia Pub Date : 2019-01-23 DOI: 10.33394/hjkk.v6i2.1607

Lalu Bhabiet Rinjani Accraf, S. Suryati, Yusran Khery

{"title":"Pengembangan E-modul Interaktif Berbasis Android dan Nature of Science Pada Materi Ikatan Kimia dan Gaya Antar Molekul Untuk Menumbuhkan Literasi Sains Siswa","authors":"Lalu Bhabiet Rinjani Accraf, S. Suryati, Yusran Khery","doi":"10.33394/hjkk.v6i2.1607","DOIUrl":"https://doi.org/10.33394/hjkk.v6i2.1607","url":null,"abstract":"Chemical bond sand intermolecular forces have abstract characteristics. Thepresence of technology in learning media can help students understand theconcept. The learning media in question can be in the form of an androidbasedinteractive e-module that provides convenient accessibility for users. Topresent the atmosphere of science learning, the e-module can be structuredwith the orientation of the Nature Of Science. This research and developmentaims to produce an android-based interactive e-module prototype with thenature of science oriented on chemical bonding and intermolecular forcessubject material to foster students' scientific literacy. This type of researchand development study was carried out with the Nieven development modelwhich consisted of 4 stages: (1) preliminary research stage, (2) prototypingstage ,(3) summative evaluation stage, and (4) systematic reflection anddocumentation stage. However, due to limited resources, this study wascarried out until summative evaluation. With the presentation formula andwith the categories, the results of expert validation obtained an averagepresentation of 90% with very feasible categories, and practical test resultson chemistry teachers obtained avalue of 95% with very feasible categoriesand the results of limited group trials obtained 85% with very decentcategory. Therefore, it can be concluded that the interactive e-moduleprototype that developed is very feasible and can be proceed to abroaderstage in fostering students' literacy skills.","PeriodicalId":346446,"journal":{"name":"Hydrogen: Jurnal Kependidikan Kimia","volume":"78 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120892720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Efektivitas Penggunaan Biji Kelor (Moringa Oleífera, Lam) Sebagai Koagulan Untuk Menurunkan Kadar TDS dan TSS Dalam Limbah Laundry 使用球茎(Moringa Oleifera, Lam)作为一种凝结剂，降低洗衣废物中的TDS和TSS的水平

Hydrogen: Jurnal Kependidikan Kimia Pub Date : 2019-01-23 DOI: 10.33394/hjkk.v6i2.1604

Ahsanul Hak, Yeti Kurniasih, Husnul Hatimah

{"title":"Efektivitas Penggunaan Biji Kelor (Moringa Oleífera, Lam) Sebagai Koagulan Untuk Menurunkan Kadar TDS dan TSS Dalam Limbah Laundry","authors":"Ahsanul Hak, Yeti Kurniasih, Husnul Hatimah","doi":"10.33394/hjkk.v6i2.1604","DOIUrl":"https://doi.org/10.33394/hjkk.v6i2.1604","url":null,"abstract":"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.","PeriodicalId":346446,"journal":{"name":"Hydrogen: Jurnal Kependidikan Kimia","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131147236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Pengembangan Modul Ikatan Kimia dan Bentuk Molekul Berorientasi Nature of Science Untuk Menumbuhkan Literasi Sains Siswa 化学结合和以科学为导向的分子形状的模块的发展，以提高学生的科学素量

Hydrogen: Jurnal Kependidikan Kimia Pub Date : 2019-01-23 DOI: 10.33394/HJKK.V6I2.1603

Hifzani Nurwanti, Yusran Khery, Baiq Asma Nufida

引用次数: 2