COMPUTER SUPPORTED SCHOOL CHEMICAL EXPERIMENT IN COMPLEX APPROACH – “ACIDIC BUBBLES”
Journal Title: Problems of Education in the 21st Century - Year 2011, Vol 36, Issue 12
Abstract
Digital technologies are used in experimental practice under school conditions mainly for data statistic processing, computer modeling of natural principles and supporting the real experiments by computer, so that the measurement process can occur simultaneously with data recording during experiments. This study is focused on the use of computer within real experimenting. We have chosen the experiment “Acidic bubbles” as an example of running the computer-aided real experiment. Solubility of carbon dioxide (CO2) in the liquid is influenced by characteristics of the solvent and the solute, pressure and temperature. The aim of the experiments is to show changes in pH values in water/carbon dioxide (H2O/CO2) mixtures (differing in various CO2 content) in time and temperature. Experiments confirmed that the temperature increased in relation to increasing pH. CO2 solubility decreased along with increasing temperature and the resulting lower concentration of CO2 in the mixture also caused the reduction of the carbonic acid (H2CO3) concentration. Moreover, the acid was decomposed by the influence of the higher temperature. Advantages of using the measuring systems can be seen in their supportive functions leading to investigative experimental activities of students, which are gradually disappearing from both primary and secondary schools for various reasons. Advantages of this approach are increasing by applications connected with everyday life products as in presented example “Soda-stream” device in the kitchen.
Authors and Affiliations
Jana Braniša, Zita Jenisová, Martin Bílek
Keywords
Related Articles
- EP ID EP35050
- DOI -
- Views 274
- Downloads 0
The ReSeaRch aNd STudy PaThS IN The SecoNdaRy School: The caSe of The PolyNomIal fuNcTIoNS of The SecoNd degRee
This analysis introduces the pedagogy of research and questioning the world within the Math classrooms at secondary schools in Argentina by using Research and Study Paths (RSP). The RSP have been proposed by Chevallard...
ICT IN NATURAL SCIENCE FOR EMPOWERMENT: STUDENT WORK OF A DIFFERENCE
In 1994 the South African democratic government was sworn into power. A new education curriculum was implemented to replace the redundant, racialised apartheid education curriculum. The Department of Education was concer...
prOVIsIOn Of bAsIC EDUCATIOn In KEnyA: ImplICATIOns fOr ThE pOOr
Poverty is the world’s current greatest threat to peace and stability more than terrorism and other highly published struggles. In Kenya the wish to alleviate poverty has been articulated since independence through var...
THE POPULARITY OF GEOGRAPHY IN POLAND AS A SCIENTIFIC DISCIPLINE TO STUDY INTRODUCTORY REPORT OF THE RESEARCH
The number of secondary school graduates choosing a particular discipline to study is, to some extent, the reflection of the position of this scientific discipline and the improvement of its research achievements as we...
EDUCATIONAL CYBERNETICS OR DIDACTICS APPROACH TO “ECONOMY” OF HUMAN THINKING
The paper describes starting point of so called ”Educational Informatics“ as one of the Educational Cybernetics approaches, and example of research results of theory called as „human thinking economy“ application in the...