If you have ever studied chemistry in the Balkans—specifically in Croatia, Serbia, Bosnia and Herzegovina, or Montenegro—you have almost certainly encountered the name Ivan Sikirica. For decades, his collection of workbooks and problem collections has been the bible for high school chemistry students. Among the most sought-after titles is his book focusing on stehiometrija (stoichiometry).
The search phrase "sikirica stehiometrija pdf" is one of the most common queries among students preparing for exams, the matura (state graduation exam), or university entrance tests. Why? Because stoichiometry is the backbone of quantitative chemistry. Without mastering it, understanding reactions, moles, molarity, and gas laws is impossible.
In this article, we will explore what makes Sikirica’s approach to stoichiometry unique, where to find legitimate resources, how to solve typical problems from the book, and why a PDF version might be both a blessing and a curse.
Ivan Sikirica is a renowned Croatian chemistry professor and author. He has written multiple collections of chemistry problems, but the two most famous are:
The "Stehiometrija" section focuses exclusively on:
These problems are famous for their logical progression: from simple drills to complex, multi-step word problems that mimic real exam scenarios. sikirica stehiometrija pdf
Most legitimate editions include answers at the back, though sometimes without full step-by-step work (to force students to think).
Example:
Calculate the mass of carbon dioxide produced when 10.0 g of methane (CH₄) is completely burned.
Reaction: CH₄ + 2 O₂ → CO₂ + 2 H₂O
Solution:
If you need a specific scanned page or solutions to certain problems from Sikirica's workbook, try asking in Croatian student groups or contact your chemistry teacher — many have digital copies for educational use.
Stehiometrija by Milan Sikirica is a foundational handbook and collection of problems in chemistry, widely used across high schools and universities in the Balkans. It has undergone over 20 editions, evolving into a standard reference for mastering chemical calculations. Key Content Overview What is “Sikirica Stehiometrija”
The book combines theoretical explanations with a vast array of solved and unsolved problems, covering essential quantitative aspects of chemistry:
Fundamental Laws and Concepts: Atomic and molecular masses, the mole concept, and gas laws (including Avogadro's law).
Chemical Equations: Balancing reactions and determining quantitative relationships between reactants and products.
Solutions and Concentrations: Calculations involving mass fractions, molarity, and density of solutions.
Chemical Equilibrium: Equilibrium constants, electrolyte dissociation, and solubility products. Zbirka kemijskih zadataka i testova za gimnazije (Collection
Acid-Base Chemistry: pH values, buffers, and salt hydrolysis. Technical Details
Author: Milan Sikirica, Professor Emeritus at the University of Zagreb. Publisher: Školska knjiga, Zagreb.
Format: Typically 254 pages in recent editions (e.g., 2008).
Target Audience: Gymnasium students, vocational school students, and university students in chemistry or engineering. Digital Access and Availability
While the physical book is available through the Školska knjiga webshop and various bookstores like Arka knjiga, digital versions (PDFs) are often hosted on educational document platforms:
Full Handbook/Zbirka: Copies of various editions (e.g., 1995, 2001) can be found on sites like Scribd.
Solutions Only: Specific documents focusing purely on solved problems from the book are also widely circulated online. Sikirica Stehiometrija | PDF - Scribd