MAY THE WORK I'VE DONE SPEAK FOR ME
ONLINE CONTENTS
Periodic Table of Chemical Elements
Organization of chemical elements in alphabetical order by their names (or symbols) doesn't tell us anything about their properties but it is useful when searching for an element. We can list elements in order of increasing atomic number but it wouldn't be a periodic table any more. The periodic table is a chart that organizes the elements by increasing atomic number and their chemical and physical properties (see article History of the Periodic table of elements). Rows are arranged so that elements with similar properties fall into the same vertical columns ("groups").
The lanthanides and actinides should actually be placed in the middle of the table as well, after lanthanum and actinium, but, because of their similarity to each other, they are removed from the middle to save space.
On periodni.com you can find two different sites
- EniG. Periodic Table of the Elements - a very attractive and fast periodic table, available in six languages (German, English, French, Croatian, Italian and Spanish) and twelve temperatures (ITS-90), completely designed in CSS.
- ASCII Periodic Table of the Elements - a periodic table especially made for browsers with slow (or expensive) connections (such as a mobile phone users) or for purely text-based browsers like Lynx.
JavaScript Programs
- Calculator - online scientific calculator in one file (can work without Internet connection).
- Scientific calculator for chemists - the best online scientific calculator. Calc4Chem is a JavaScript scientific calculator for chemists that can be used as a common scientific calculator (sin, cos, log, power, root, memory), but also contains a molecular weight calculator and tables with various physical and chemical constants.
- Gas laws calculator: general gas equation, Charles' law, Gay-Lussac's law, Boyle's law, and combined gas law.
- Molar mass calculator - Enter a chemical formula to calculate its molar mass and press Enter.
- Angle Converter - is highly helpful if you have angles measured in degrees (or grads, or radians) and you want them in radians (or grads or decimal degrees).
- Roman numerals converter - a small, easy to use tool which converts Roman Numerals to Arabic numbers and vice versa.
- Number systems converter - easy to use tool which converts a decimal numbers to binary (octal, hexadecimal, ...) and vice versa.
PHP programs
- Preparation of solutions calculator - is a useful tool which allows you to calculate how many solid chemicals or stock solutions you will need to prepare the desired solution.
- Labeling of chemical containers - After you prepare the solution, we need label the container to clearly identify its contents. This tool will prepare a label for a bottle with all the necessary information and hazard pictograms.
- Oxidation numbers calculator - The sum of the oxidation numbers of all the atoms in a species must be equal to the net charge on the species.
- Help for writing chemical equations on the Web - This script produce code for directly embedding equations into HTML websites, forums or blogs (writing double arrows, oxidation numbers).
Imate redoks jednadžbu koju ne znate balansirati? Osim što će balansirati jednadžbu, ovi programi će vam i detaljno opisati postupak balansiranja odabranom metodom.
- Uravnoteživanje jednadžbi redoks reakcija ion-elektron metodom (poznatom i kao metoda polureakcija)
- Uravnoteživanje jednadžbi redoks reakcija metodom promjene oksidacijskih brojeva
- Uravnoteživanje jednadžbi redoks reakcija metodom agregacije redoks specija (ili ARS metodom)
- Izjednačavanje kemijskih jednadžbi upotrebom Gaussove metode eliminacije - Svaka kemijska jednadžba mora biti uravnotežena. Za određivanje stehiometrijskih koeficijenta kemijske jednadžbe ovaj kalkulator koristi Gaussovu metodu eliminacije.
Online Games
- Memory Game - a Javascript version of the popular memory card game, also known as concentration (Themes: Chemistry, Animals, Elements)
- Find the Pairs - Match the words with the correct images (or name and symbol of element).
Webmaster Tools
A small collection of tools which may help with designing and creating web pages.
- Hexadecimal color codes - quickly find HTML color codes for your website.
- HTML color names - the table of color names and their corresponding RGB values.
- Writing mathematical and chemical equations on the Web - How to display fractions on the web or write double arrow in the equilibrium reaction? How to write a oxidation numbers above the elements in the equation?
- Character entity references in HTML - for international characters, symbols, mathematical symbols, and Greek letters.
- Unicode UTF-8 encoding - tables with special characters that are contained within each language.
Deutsch
Français
Hrvatski
Italiano
Español
English-Croatian Chemistry Dictionary & Glossary
The Chemical glossary contains basic information about basic terms in chemistry, physical quantities, measuring units, classes of compounds and materials and important theories and laws.
A · B · C · D · E · F · G · H I · J · K · L · M · N · O · P R · S · T · U · V · W · X · Z
Articles and tables
- Electronic configurations of the elements - describes the distribution of electrons in the shell of an atom at various energy states.
- Fundamental physical constants - CODATA Recommended Values of the Fundamental Physical Constants: 2006.
- Naming of elements of atomic numbers greater than 100 - IUPAC systematic nomenclature of superheavy elements.
- SI - The International System of Units - the base quantities used in the SI are length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity.
- Solubility product constants - Ksp (or the solubility product) is the product of the molar concentrations of the constituent ions, each raised to the power of its stoichiometric coefficient in the equilibrium equation.
- NFPA 704 Hazard Diamond - is standard system for the identification of the hazards of materials for emergency response.
- GHS - Hazard pictograms - The diamond-shaped pictograms indicate the nature of the hazards associated with the use of a hazardous substance or mixture. Do you know what these pictograms mean?
- Crystal systems and Bravais lattices - Crystal system is a method of classifying crystalline substances on the basis of their unit cell. There are seven unique crystal systems: cubic, hexagonal, tetragonal, trigonal, orthorhombic, monoclinic and triclinic.
- Stoichiometric calculations are based on the equalization between the ratio of the amount of substance we're interested in, and the ratio of the corresponding absolute values of the stoichiometric numbers. Almost every single stoichiometric task can be solved in five easy steps, and with only a basic knowledge of mathematics.
- The quantitative expression of composition of mixtures and solutions - can be expressed with: concentration, fraction, ratio (molar, mass and volume), and molality.
- Chlorinity and salinity of seawater - The most characteristic feature of seawater is its salty taste. Each liter of the ocean contains approximately 34 g of dissolved salts.
- Illustrated history of rare earth elements - REE is a group of 17 chemically similar metallic elements.
- History of the Periodic table of elements - Short history of how the Periodic table of chemical elements was arranged, from Lavoisier's Table of simple substances to Seaborg Actinide concept.
- Quantitative expression of composition of mixtures and solutions - The quantitative composition of a solution can be expressed with: concentration, fraction, ratio (molar, mass and volume), and molality.
- Stoichiometric calculations - five steps to the solution - Almost every single stoichiometric task can be solved in five easy steps, and with only a basic knowledge of mathematics.
Articles in ecology
Do follow us global warming, cooling or pollution?
- Climate change - Some will lie for money (privileges, power) while others will present data that support their 'truth', the third are exclusive and believe only in their own 'truth', the fourth are most likely right but they are lost in all this crowd. Which one of them is actually right, only time will tell.
- Global warming and mankind - Greenhouse gasses are gasses that allow unhindered passage of short wave sunlight (visible part of the spectrum and ultraviolet radiation), and absorb long wave radiation (infrared radiation).
- Story of ozone and ozone holes - The effect of ozone depends on how far away we are from it: it poisons us in the cities (photochemical smog), it heats us in the troposphere (greenhouse gas) and protects us in the stratosphere (ozone layer).
- World War 3: Battle for Earth - I believe you all heard the old saying about how we did not inherit the Earth from our parents but are instead borrowing it from our children. If we want our children to be better follow us battle for Earth.
- The ozone layer is not a shield, it is the remnant of UV radiation protection - Ozone does not have a shield that reflects ultraviolet radiation - it sacrifices itself for our protection. No matter how thick the ozone layer is it will simply disappear when illuminated. The ozone layer represents a "negative image" in terms of UV radiation protection. It is comprised of ozone molecules that UV photons did not hit and those that were not dissociated even though they were hit.
FREE DOWNLOAD
Printable Materials
Below are several versions of the periodic table prepared for printing on A4 paper (297×210 mm)
- Printable periodic table - Black and white version
- Printable periodic table - Color version
- Blank periodic table worksheets for student work
Is chemistry in your job description or a subject in school? Here you can find a bookmark sized 'Periodic system of elements' with basic instructions on how to balance chemical reactions
Crystal systems are the easiest to understand when you hold them in your hand. Craft 3D paper models of seven basic crystal systems
or print a large educational poster for your laboratory wall (A1 paper: 841×594 mm)
These rules and style conventions could greatly assist anyone in their use and understanding of SI units
Chemistry images gallery
The chemistry images collection includes images of laboratory glassware and apparatus, structural formulas, crystal system, graphs, and more. You can download and use any image from my site and use it in your own work, either personal or commercial.
- Chemistry images gallery - (New on periodni.com)
The Periodic Table is also available as a desktop background (wallpaper). Choose a size according to the resolution of your monitor. (Image Dimensions: 1280×887, 1024×709, 800×554.)
High resolution images (Image Dimensions: 3182×2078.)
FREE SOFTWARE FOR WINDOWS
C Programs
The new Chemistry Assistant consists of several separate programs. These programs are written in pure C without MFC, and each program can be used separately as a portable application.
- Part I. Calculator for Chemists - is a small but powerful scientific expression calculator which supports many scientific functions, normal and inverse. All of the calculations can be printed or saved and recalled again. (Online Help)
- Part II. Solution Calculator - is a useful tool which allows you to calculate how many solid chemicals or stock solutions you will need to prepare the desired solution. The program provides lab-ready directions on how to prepare the desired solution. (Online Help)
- Part III. Unit & Number Converter - is a program that will convert most popular units of length, mass, volume, temperature, pressure, energy and many others. It also includes the ability to create custom conversions for anything you want (you can create your own custom units). This simple tool allows you to convert the number from one numeral system into another (for example, from binary into decimal or Roman numeral system). (Online Help)
English-Croatian Dictionary
English-Croatian dictionary in the StarDict format (necessary for Onyx Boox, my new e-book reader) is made through conversion of a two-column dictionary file EH.txt (by Dr. Goran Igalya) in to the StarDict format. StarDict is a free, open source program with thousands of dictionaries that are easily integrated in to the main program.
- English-Croatian dictionary in the StarDict format
Serbian->Croatian translator
The Serbian->Croatian translator is a free Visual basic program for all Windows platforms that can translate texts, subtitles for movies or whole web pages from Serbian to Croatian (sr2hr dictionary contains over 84 000 word pairs).
Old Visual Basic Programs
A small collection of my old, but fully functional programs written in Visual Basic 6.0.
- EniG. Periodic Table of the Elements - contains the basic data about the element in 7 languages; it shows visually the change of physical condition with the change of temperature.
- EniG. Chemistry Assistant - VisualBasic scientific calculator for fast calculations of molecular weight, quadratic equations, quantity of chemicals for preparations of solutions and statistic analysis of experimental data.
- EniG. Change Code Page - converts web pages between different standards, eg. from windows-1250 in to ISO-8859-2 or UTF-8.
SCIENTIFIC PAPERS
Articles in journals
Here, I provide the abstract of my scientific articles, which has been published in peer reviewed scientifc journals.
- E. Generalić, N. Vladislavić,Aggregate Redox Species Method - an Improved Oxidation Number Change Method for Balancing Redox Equations, Chemistry Journal, 4 (2018), 3; 43-49
- S. Brinić, M. Buzuk, M. Bralić, E. Generalić, Solid-contact Cu(II) ion-selective electrode based on 1,2-di-(o-salicylaldiminophenylthio)ethane, Journal of solid state electrochemistry, 16 (4) (2012), 1333.
- S. Brinić, M. Buzuk, E. Generalić, M. Bralić, Improving the response of copper(II) selective PVC membrane electrode by modification of N2S2 donor ligand, Acta chimica Slovenica, 57 (2010), 318
- M. Buzuk, S. Brinić, E. Generalić, M. Bralić, Copper(II) ion selective PVC membrane electrode based on S, S' bis(2 aminophenyl)ethanebis(thioate), Croatica chemica acta, 82 (4) (2009), 801.
- M. Bralić, S. Brinić, E. Generalić and L. Vrsalović, Development of a flow manifold for Fe(III) ion determination with a fluoride ion-selective electrode, Talanta, 63 (2004) 777.
- M. Bralić, Nj. Radić, S. Brinić and E. Generalić, Fluoride Electrode with LaF3-membrane and Simple Disjoining Solid-State Internal Contact, Talanta, 55 (3) (2001) 581.
- M. Bralić, E. Generalić and S. Krka, Design of the Fluoride Ion-Selective Electrode as Tubular Detector for Flow Injection Analysis, Anal. Letters, 33 (9) (2000) 1811.
CROATIAN LANGUAGE
Some articles are written only in Croatian
Articles in chemistry (Hr only) 
Student scripts (Hr only)
written for students of graduate and undergraduate studies at the Faculty of Chemistry and Technology.
- E. Generalić, S. Krka, Analitička kemija, Split, 2011.
- E. Generalić, S. Krka, Analiza realnih uzoraka, Split, 2012.. Appendix: Računalna simulacija uzorkovanja (Computer simulation of the sampling - 71.4 kB)
- S. Krka, E. Generalić, Zbirka zadataka iz analitičke kemije, Split, 2012.
GORAN'S WORK
Gamesear
My son Goran finally made his site about PC games. Whether he did it so he has an excuse to play them all day or because he loves them you can find out at www.gamesear.com. Here's a few reviews he's done
- UnderRail - An oldschool indie combat RPG with a big focus on character customization
- Aviary Attorney - A detective game starring two Victorian era birds
- ShipLord - An incredibly difficult indie game designed for those that chase high scores
- Titan Souls - A short & stylish game inspired by Shadow of the Colossus
- Fallout 4 - A detailed review of 2015's biggest RPG
- Hard West - A western take on the XCOM series with some supernaturale elements added in
- The Binding Of Isaac: Afterbirth - One of the very best roguelike games out today, filled to the brim with content
Can my son's work by extension be considered my own?
English
Citing this page:
Generalic, Eni. "What I am Doing?." EniG. Periodic Table of the Elements. KTF-Split, 18 Jan. 2024. Web. {Date of access}. <https://www.periodni.com/enig/index.html>.
