Polymers as they are known as molecules formed by repetition of small molecules known as monomers, polymers that are often used cannot conduct electricity. Along with the development of the polymer era at this time can also conduct electricity known as conductive polymers. One of the conductive polymers that attracts attention is polyaniline. Synthesis of polyaniline conductive polymers is carried out with aniline monomers mixed with Ethylene Glycol Dimetacrylate (EGDMA) as Crosslinkers, and Dimethoxy phenylacetophenone (DMPP) as the initiator. In this reasearch, the polymerization processed with the photopolymerization method with a mixture of Aniline (mL), DMPP (0.1 g), and EGDMA (mL) polymerized with photopolymer. The polymers obtained were tested for electrical conductivity, the composition which showed optimum conductivity was in the ratio of aniline and EGDMA 1 : 1 with the electrical conductivity of 0.001462 Ohm.cm−1. The conductivity measurement is done by using Four Point Probe (FPP) and other characterization measurements using FTIR (Fourier Transform Infrared) and TGA (Thermo-gravimetric Analysis).
The 2013 curriculum is implemented in senior high school, emphasizing the scientific approach. Learning model that is able to make students active and can develop science process skills is guided inquiry. Guided inquiry consists of several syntax that can guides students in learning process, consisting of orientation, exploration, concept formation, application, and closing. Students are guided by key questions related to redox reaction material of class XII SMA/MA which is applied in instructional media in the form of interactive powerpoints. The type of this research was reseach and development with 4-D models. Powerpoint interactive validity testing is carried out by 3 chemistry lecturers at FMIPA UNP and 2 chemistry teachers at SMAN 14 Padang, the powerpoint interactive have an average kappa moments 0.91 which is very high level of validity. While the module practicality test is by 3 chemistry teachers and 25 XII grade IPA at SMAN 14 Padang, the average kappa moment from the results of practicality test of the module by the teachers is 0.93 and by the student is 0.90 with very high category. From the research can be concluded that interactive powerpoint is valid and practical
Electrolyte and nonelectrolyte solutions are one of the materials in SMA/MA class X chemistry. The materials of electrolyte and nonelectrolyte solutions can be understood well through their macroscopic, submicroscopic, and symbolic representations. This study aims to develop interactive PowerPoint learning media based on guided inquiry on electrolyte and nonelectrolyte solution material for class X SMA/MA which is in accordance with the characteristics of the material and the demands of the 2013 curriculum. (define, design, develop, and disseminate). This research is limited to the develop stage. Testing the validity and practicality of interactive PowerPoint learning media based on guided inquiry on electrolyte and nonelectrolyte solution material using an instrument in the form of a questionnaire. The subjects of the validity test of this interactive PowerPoint learning media were three chemistry department lecturers and two MAN chemistry teachers. The practicality test subjects of this interactive PowerPoint learning media were two MAN 5 chemistry teachers and twenty MAN 5 Mandailing Natal students. The data obtained from the questionnaire were processed using the kappa moment to obtain the k value of each validity and practicality test item. The interactive learning media of electrolyte and nonelectrolyte solutions produced in this study had a validity k value of 0.86 and practicality by teachers and students obtaining k values of 0.895 and 0.89, with very high criteria of validity and practicality. Larutan elektrolit dan nonelektrolit merupakan salah satu materi dalam kimia SMA/MA kelas X. Materi larutan elektrolit dan nonelektrolit dapat dimengerti dengan baik melalui representasi makroskopik, submikroskopik, dan simboliknya. Penelitian ini bertujuan untuk mengembangkan media pembelajaran PowerPoint interaktif berbasis inkuiri terbimbing pada materi larutan elektrolit dan nonelektrolit kelas X SMA/MA yang sesuai dengan karakteristik materi dan tuntutan kurikulum 2013. Penelitian yang dilakukan termasuk jenis penelitian pengembangan (research and development) dengan model 4-D (define, design, develop, dan disseminate). Penelitian ini dibatasi sampai tahap develop. Pengujian validitas dan praktikalitas media pembelajaran PowerPoint interaktif berbasis inkuiri terbimbing pada materi larutan elektrolit dan nonelektrolit menggunakan instrumen berupa angket. Subjek uji validitas media pembelajara PowerPoint interaktif ini adalah tiga orang dosen jurusan kimia dan dua orang guru kimia MAN. Subjek uji praktikalitas media pembelajaran PowerPoint interaktif ini adalah dua orang guru kimia MAN 5 dan dua puluh orang siswa MAN 5 Mandailing Natal. Data yang dihasilakan dari angket diolah memakai momen kappa untuk memperoleh nilai k setiap item uji validitas dan praktikalitas. Media pembelajaran interaktif larutan elektrolit dan nonelektrolit yang dihasilkan pada penelitian ini memiliki nilai k kevalidan 0,86 dan kepraktisan oleh guru dan siswa memperoleh nilai k 0.895 dan 0.89, dengan kriteria kevalidan dan kepraktisan sangat tinggi.
Salt hydrolysis is one of the chemical’s material with the associated aqueous reaction in solution. The material is difficult to understand for students. Based on interviews, the learning process has not been interconnected by three levels of chemicals representation. The purpose of the research to decide on the validity and practicality of the salt hydrolysis electronic module based on structured inquiry with the interconnection of three levels of chemicals representation. The method of research was used by Researched and Development of Plomp model. The research instruments are used by sheets validation and sheets practicality. The electronic module was validated by 4 experts. The practicality of the electronic module was checked by 2 chemistry teachers and 60 students at two High Schools in Padang City. Validity and Practicality were analyzed by utilizing Cohen’s Kappa Statistic. The outcomes of validation showed that the electronic module had an almost perfect strength of agreement with a Kappa was 0.87. The practicality level had substantial strength of agreement with a Kappa was 0.80 for the student’s reaction and also almost perfect strength of agreement with a Kappa was 0.85 for the teacher’s reaction. Therefore, the result electronic module of salt hydrolysis can be used as a good alternative for teaching-learning chemistry in high school.
COUNSELING ON MAKING BOKASHI FERTILIZER FROM CHICKEN MANURE AND HUSK ASH IN NAGARI MUNGKA. Community activities in the field of livestock are growing in Nagari Mungka, especially raising chickens. However, the processing of chicken manure waste is not handled properly. This may be due to the lack of public knowledge about this waste processing technique. This counseling aims to improve the knowledge and skills of chicken farmers in making bokashi fertilizer from chicken feces in Nagari Mungka, Lima Puluh Kota District. Bokashi fertilizer is a type of organic fertilizer that uses decomposers in the manufacturing process. The basic ingredients for this bokashi fertilizer are chicken feces, husk ash, bran and EM4. The counseling activity includes presentation of material, demonstration and evaluation of activity. Chicken farmers receive the knowledge about the benefits of bokashi fertilizer, how to make it and how to market it if it has the potential to be sold. This activity has a great influence on chicken farmers because this activity is very useful and right on target. Chicken farmers look enthusiastic in participating in the activities. The result of this community service activity is the increased knowledge and skills of breeders in processing chicken manure into bokashi fertilizer and have the desire to try and apply it.
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