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INDONESIA
Jurnal Akademika Kimia
Published by Universitas Tadulako
ISSN : 24775185     EISSN : 23026030     DOI : -
Core Subject : Science, Education,
Chemistry Education
Jurnal Akademika Kimia merupakan jurnal elektronik open access yang bertujuan untuk mempublikasi hasil-hasil penelitian terbaru dalam area pendidikan akademik khususnya pada bidang pendidikan kimia meliputi asesment pembelajaran, model pembelajaran dan pengembangan perangkat pembelajaran, serta kimia murni termasuk kimia organik, kimia anorganik, kimia analitik, kimia fisik, biokimia dan bidang kimia lainnya seperti kimia lingkungan.
Arjuna Subject : -
Articles 8 Documents
 1 
Search results for , issue "Vol 2, No 1 (2013)" : 8 Documents clear
PENGARUH PEMBELAJARAN METODE ACCELERATED LEARNING TERHADAP HASIL BELAJAR SISWA KELAS XI IPA MAN I PALU PADA POKOK BAHASAN LAJU REAKSI Nur Intan A. Sumarau; Suherman Suherman
Jurnal Akademika Kimia Vol 2, No 1 (2013)
Publisher : Universitas Tadulako

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Abstract

This research is an experimental study.The aim of this study is to determine the effect of using accelerated learning and conventional methods for the learning result of class XI IPA MAN I academic year 2012/2013.The hypothesis of this research is there are significant effect between accelerated learning method and the learning result of class XI in reaction rate subject. Researchers took two classes to be used as the sample, which consisted of class XI Science II as a control with conventional methods and class XI science I as an experiment class with Accelerated Learning methods.Based on the obtained result, average value of student with conventional methods (grade control) is 6.47, while the average value of students with accelerated learning method (experimental class) is 9.67. From the t-test,was obtained thitung = 1.808> ttable = 1.66.This shows Ho refused and H1 accepted, so it can be concluded that there is significant effect between accelerated learning method with the learning result of reaction rate subject, rather than using conventional learning method. Accelerated learning method gave higher learning result than using conventional method in reaction rate subject.
ANALISIS LOGAM ZINK (Zn) DAN BESI (Fe) AIR SUMUR DI KELURAHAN PANTOLOAN KECAMATAN PALU UTARA Rahayu, Budi; Napitupulu, Mery; Tahril, Tahril
Jurnal Akademika Kimia Vol 2, No 1 (2013)
Publisher : Universitas Tadulako

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Abstract

A study is carried out to determine the metal content of zinc (Zn) and iron (Fe) in well water samples by AAS using a wet method of destruction through the addition of concentrated HNO3 as a solvent and forming acidic. The measuring the levels of zinc in the sample performed at a wavelength (λ) = 213 nm and measuring the levels of iron in the sample performed at a wavelength (λ) = 248.3 nm. The results obtained for the levels of zinc metal respectively are 0.3121 mg/L, 0.1175 mg/L, and 0.0478 mg/L, and iron metal levels are 0.394 mg/L, 0.546 mg/L, and 0.324 mg/L. These data indicate the metal content of zinc in wells water Pantoloan Village North Palu Palu district is still below the threshold value while the metal content of iron in wells near the sea (sampel B) is above the standard threshold value defined in the Rules of Ministry of Health Decree No. 492 /2010.
PENERAPAN MODEL PEMBELAJARAN KOOPERATIF TIPE TWO STAY TWO STRAY TERHADAP HASIL BELAJAR KIMIA SISWA KELAS XI IPA 2 PADA POKOK BAHASAN LAJU REAKSI DI SMA NEGERI 1 KASIMBAR Masrah, Masrah; Ratman, Ratman
Jurnal Akademika Kimia Vol 2, No 1 (2013)
Publisher : Universitas Tadulako

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Abstract

This sudy presents the research of classroom action (PTK) executed in two cycle, in which every cycle cover the planning, execution, observation and reflection. This research aims to increase chemistry result study for student of XI IPA2 class on senior high school 1 of Kasimbar in rate reaction material through application of cooperative learning two stay two stray model. Research subject was XI IPA2 class on senior high school 1 of Kasimbar amount to 35 students. Data type was collected data qualitatively in the form of result of observation of student activity and learn at the time of process learn take place, and quantitative data in the form of result learn the student of final tes evaluation of action. Result of cycle I obtained by activity of student and teacher be at the good criterion, percentage of absorpsion classical 62.0% and complete learn the classical 65.7%. The second cycle experience of the improvement, that is activity of student and teacher be at the criterion very good, percentage of absorpsion classical 76.8% and complete learn the classical 88.5%. Results indicated that the application cooperative learning model two stay two stray can improved chemistry result study for student of xi IPA2 class in reaction rate material on senior high school 1 of Kasimbar.
PEMBUATAN ETANOL DARI BUAH SALAK (Salacca Zalacca) YANG TIDAK LAYAK KONSUMSI Yasin, Lukman; Jura, Minarni Rama; Supriadi, Supriadi
Jurnal Akademika Kimia Vol 2, No 1 (2013)
Publisher : Universitas Tadulako

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Abstract

Salak is a inclusive of into erudite tribe Moraceae name is a salacca zalacca in English named is a snake fruit and one of fruit type which is at most planted in the tropics. One of potency from of salak which improper consume that is exploited permanent upon which making ethanol, where glucose can be exploited as ethanol, because in it contain elements of carbon,hydrogen and oxygen. which is do not consume that is damage storey level 90. The purpose of this research is to cultivate salak which improper consume as raw material for making etanol by fermentation process and to determine the level of ethanol produced from salak which improper consume. In this research yeast fermentation is used with tape, NPK fertilizer and urea fertilizer. Starter used by 20 mL each of three erlenmeyer. The starter and then fermented for 5, 8, 11 and 14 days ago on distillation. After the distillation was measured levels of ethanol, the reaction with Na metal, solubility in water, density measuremen and measure pH ethanol. Then the analysis show a 5 day fermentation obtained 13.8%, ethanol content weight of 0.991 g/mL and pH 5.02. Fermentation for 8 days derived ethanol content of 10.79%, density 0.989 g/mL and pH 4.21. Fermentation for 11 days gained ethanol content 6%, weight of 0.982 g/mL and pH 3.04. And fermentation obtained 2.20%, density 1.002 g/ml and pH 2.25.
PENINGKATAN HASIL BELAJAR KIMIA MENGGUNAKAN MULTIMEDIA PADA MATERI IKATAN KIMIA KELAS X SMK NEGERI PARIGI SELATAN Jumadil, Jumadil; Gonggo, Siang Tandi; Rahmawati, Sitti
Jurnal Akademika Kimia Vol 2, No 1 (2013)
Publisher : Universitas Tadulako

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Abstract

This study aims to determine whether to use the multimedia macromedia flash points can increase the activity and learning achievement of students in the chemical bond subject at class X SMK South Parigi. The sample is a class X SMK south Parigi is 46 students. This research is the Classroom Action Research (PTK) type which was implemented in three cycles, where each cycle consists of four stages, namely: planning, implementation, observation, reflection. Data obtained from each cycle were analyzed to determine the corrective action in the next cycle. Data collection is carried out through a test which consists of post tests at each end of the learning cycle 1, 2, 3 and also interviews for the entire series of events during the activity, as well as the observation sheet activities of teachers and students of each meeting. The collected data were statistically analyzed using the average of the class, classical absorption, and the thoroughness of learning. On the cycle I the average value of 6.87, the absorption of classical learning 68.81% and 68.42% completeness, in the second cycle the average value was 7.73, 77.32 and 88.37% and classical absorption the completeness study on a third cycle of the average value was 8.23, the absorption of classical learning 82.33% and 93.33% completeness. While on the student activity, the cycle I get an average score of 27 which is an increase in the second cycle to 36 and 40 in cycle III with both criteria. Therefore, the use of power point and multimedia macromedia flash in learning can improve student learning activities and results.
EKSTRAK BUNGA WARU (Hibiscus tiliaceus) SEBAGAI INDIKATOR ASAM-BASA Frantauansyah, Frantauansyah; Nuryanti, Siti; Hamzah, Baharuddin
Jurnal Akademika Kimia Vol 2, No 1 (2013)
Publisher : Universitas Tadulako

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Abstract

Hibiscus tiliaceus is a tribe or cottons malvacea, it is known as sea hibiscus. This plant has been known for a long time ago. It is known as a shade tree in the curb or in the edge of the river and as the embankment along the coast. Although, the canopy is not too dense, it is preferred because its roots are not deep into the soil. So, it does not damage the roads and buildings. This study of hibiscus flower extract has been done. It proved that there was indicator acid-base. Hibiscus flower washed with distilled water, cut into small piece, then add dissolved acetate ethyl and macerated. After that, filtered and residue re-extracted filtering results with absolute ethanol. Extract filtered by using gauze filter, then filtered it again with paper filter paper. The filtrate is ready to use as as acid-base indicator. After that, evaluated with benchmark indicators phenolphthalein and orange methyl to titrate acid-base such as: a strong base with a strong acid, a weak base with a strong acid and a strong base with a weak acid. The result of survey revealed that the indicator of hibiscus flower extracts indicate the equivalence point in the titration result equivalent to the comparison indicator. The result showed the indicator of the hibiscus flower extract can as a substitute to synthetic indicator (phenolphthalein and orange methyl) has been used.
PERBANDINGAN PENERAPAN METODE PEMBELAJARAN ROLE PLAYING DENGAN PEMBELAJARAN KONVENSIONAL TERHADAP HASIL BELAJAR KIMIA SISWA SMA NEGERI 1 LORE UTARA Masrita, Masrita; Gonggo, Siang Tandi; Sabang, Sri Mulyani
Jurnal Akademika Kimia Vol 2, No 1 (2013)
Publisher : Universitas Tadulako

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Abstract

Research dealing with role-play Learning and conventional learning methods, have been conducted. The main reason for this research was that chemical bond was one of the difficult but fundamental materials to be mastered by the students at grade X. The purpose of this research was to investigate the students’ achievement on the topic of chemical bond at SMA Negeri 1 North Lore. One way of increasing their achievement was by using role-play method. In order to make their learning understandable, not boring, and easy to grasp, the researcher applied an interesting method called role-play. The population of this research was the tenth grade students of SMA Negeri 1 North Lore in the academic year 2012/2013. The sample was 32 students of grade XA as the experimental group (role-play) and 32 students of grade XC as the control group (conventional learning). The data were collected through the test on chemical bond. Based on the analysis, it is found that the average score of the experimental group was 20.65 with deviation standard of 2.413 and of the control group was 15.06 with deviation standard of 2.975. The hypothesis testing was that the t-counted value was 12.75 and the t-table value was 1.67 with the significant value (α) of 0.05. The results showed that there was a significant difference in the students’ achievement dealing with the topic of chemical bond through the application of role-play learning method and conventional learning method at grade X at SMA Negeri 1 North Lore in the Academic Year 2012/2013.
ANALISIS ASPEK KESULITAN MENYELESAIKAN SOAL-SOAL STOIKIOMETRI BAGI SISWA KELAS X SMA NEGERI 6 PALU Eka Anisyah Miftahul Jannah; Supriadi Supriadi; Suherman Suherman
Jurnal Akademika Kimia Vol 2, No 1 (2013)
Publisher : Universitas Tadulako

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Abstract

The difficult aspect of solving stoichiometry problems for class X student need more attention. The aim of this research is to provide an overview of students’ ability in solving stoichiometry problems from cognitive aspects, and to determine the subject and the degree of students difficulty in solving Stoichiometry problems. The research subjects are students of class X Senior High School 6 Palu of the school year 2012/2013.The research sample consisted of two classes, namely Xa classes with 17 students and classes Xd with 17 students. An essay test with 13 items of question which has been validated by the school teacher are the instrument. The results of this descriptive study shown that difficulties students in the C1 cognitive aspect (Knowledge) about 11.86% with very low category, C2 (Comprehension) of 42.08% with moderate category and C3 (Application Concept) about 62.29% with a high category, and the student’s difficulties in determining the amount of moles about 46.68% with moderate category, in determining the molar mass about 36.85% with low category, the molar volume about 44.61% with a medium category, in understanding and applying Avogadro’s hypothesis and the number of moles of gas about 44.61% with moderate categories, in determining empirical formula and molecular formula about 58.96% with moderate category, hydrate compounds about 64.63% with high category, percentage of elements in compound about 56.15% with medium category, limiting reagent about 67.86% with the high category, the number of reactants or reaction products 80.10% with the high category. The conclusion is that the most difficult aspects of cognition are at C3 (Application Concepts), and the most difficult subject is to determine limiting reagents and hydrate compounds.

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