The purpose of this study was to analyze the feasibility of the Four Tier Diagnostic Test instrument , to find out what concepts students had misconceptions about and what percentage of misconceptions experienced by students at SMA Negeri 2 Pekanbaru on the material of reduction and oxidation reactions and compound nomenclature. This research uses descriptive analysis method with quantitative a…
The research of development to produce of E-LKPD based on connecting, organizing, reflecting and extending (CORE) with the help of the livewoksheets on rate of acid base subject for class XI MIA SMA/MA which is valid. The research used in the development of this E-LKPD was research and development (R&D) using a 4D model. The data instrument collection is a validation sheet form that is given to…
This developmental research aims to develop learning media in the form of a digital pocket book based on 3D Pageflip Professional on the subject of a valid Reaction Rate. This type of research is research and development (R&D) with the ADDIE development model which includes analysis, design, development, implementation, and evaluation. This research has only been carried out until the deve…
The development of Student’s Worksheets based on RMS (Reading, Mind Mapping and Sharing) on the material of ion balance and pH of salt solution aims to produce a Student’s Worksheet with valid categories and determine user responses. The development of Student’s Worksheets is carried out with an R&D approach using a 4-D development model, but only carried out until the third stage, namely…
The outbreak of the corona virus has caused many deaths and has an impact on activities such as education. Schools throughout Indonesia are closed, so the learning process is carried out online. There are various differences in the face-to-face and online learning process, because many things happen from the learning process. The purpose of this study was to determine student learning outcomes,…
The development of ICARE-based electronic activity sheet on the subject of acid and base aims to develop a valid electronic activity sheet and determine user responses in learning. The research method used is the research and development (R&D) method by applying a 4D development model which includes Define, Design, Develop and Disseminate, pandemic conditions that cause research to only be carr…
This development research aims to produce a chemoentrepreneurshiporiented E-Module (CEP) assisted by a professional 3d page flip application (3D PFP) on valid Colloidal Subjects and to determine the responses of teachers and students. This research is a development research (R&D) which refers to the 4D stage, but this research only reaches the Development stage. The research instruments us…
In the era of globalization and the demands of the Asean Economic Community (MEA) requires quality human resources. According to the 2019 PISA survey, Indonesia is ranked 72 out of 77 countries and the 2013 curriculum requires students to work on high-level thinking chemistry questions. Based on the results of interviews with chemistry teachers at SMAN 1 Pekanbaru, MAN 1 Pekanbaru, and SMAN 14 …
Chemistry is an abstract conceptual understanding and algorithmic understanding. This study aims to find out the concepts that are misconceptions and the percentage of misconceptions in students chemical bonding material. This study uses a descriptive method with a quantitative approach. Analysis misconceptions are carried out at SMA Negeri 1 Pangkalan Kerinci, using a four-tier multiple choice…
This study aims to analyze the feasibility of the four tier multiple choice diagnostic test instrument, to find out on what concepts students have misconceptions and find out the category of students' misconceptions on the reaction rate material. This study uses quantitative descriptive research methods. The population in this study were all students of class XII MIPA SMAN 2 Pekanbaru, while th…
This study aims to produce an interactive e-module (electronic module) product using sigil software on the subject of valid chemical bonds according to material and media experts based on aspects of content feasibility, presentation, language, graphics and software utilization as well as user response. This study uses an R & D design (research and development) with the ADDIE development mo…
This research aims to develop Student Activity Worksheet on hydrocarbon compounds based on the SIMAS ERIC Model. Student Worksheet Based are designed according to the stage of the SIMAS ERIC learning model. The type of this research is research and development (R and D) with reference to the development process of 4-D. The object of this research is student activities worksheets based on Simas …
This study aims to develop Osborn-based worksheets on the subject of Acids and Bases for class XI SMA/MA, determine the validity of worksheets based on content feasibility aspects, Osborn characteristics feasibility aspects, linguistic aspects, presentation aspects, graphic aspects and determine user responses to the developed worksheets. This type of research is research and development with a…
Advances in science and technology can now be used to develop the quality of education. Information technology represented by computers has now been widely used as multimedia in learning. The purpose of this research is to develop androidbased learning media using the Adobe Animate application on colloidal subjects for class XI MIA SMA/MA with valid categories based on 4 aspects, namely de…
Curcumin is one of the secondary metabolites that chemically belongs to the phenolic group. Curcumin has long been known as a yellow substance in the rhizomes of Zingiberaceae, which are used as traditional medicine in Asia. Curcumin analogues may have the same or even better pharmacological properties. The asymmetric curcumin analogue compound 1-benzyl-3-((e)-2-chlorobenzyliden)- 5-((e)-4-…
Hydrazone which is a compound with the group ‒CH=N‒NH‒. Hydrazone containing azomethin -NHN=CH- can be synthesized by heating at a certain temperature by substituting hydrazine/hydrazide with an aldehyde and has various bioactivities such as anti-cancer, anti-inflammatory, and anti-bacterial. For further development in this research, the synthesis of the compound N'1,N'3-bis-((E,E)-2…
Abstrack : Biomass is an alternative energy source because it has hydrocarbon molecules. In this study, processing of biomass into briquettes from plantation waste is carried out in the form of Oil Palm Empty Fruit Bunches with spent bleaching earth to increase the calorific value produced. This research was conducted to determine the effect of the concentration of mixed empty bunch of pal…
ABSTRACT The petroleum industry is one of the largest oil and gas companies in Indonesia. From the exploration and production of petroleum, it turns out that the petroleum industry also produces petroleum waste which can pollute the soil. For waste handling, it is necessary to have efficient and environmentally friendly petroleum processing, in the form of brick making. The procedure for m…
ABSTRACT The design of an ethylene plant from cracking naphtha using the MaxEne process aims to assess the feasibility of the plant for establishment. The ethylene plant is designed with a capacity of 155,000 tons/year. Naphtha, which is the main raw material for obtaining products ethylene according to capacity and the production process used is MaxEne where The MaxEne unit is a new and i…
ABSTRACT Cumene is a compound that is very important for the development of the chemical industry, including its uses, among others, as a raw material for the manufacture of phenol, acetone, acetophenone, resins, solvents and terephthalic acid, while for the mechanical industry, cumene compounds are used for the manufacture of fuel additives with the aim of increasing aircraft piston engin…