What's New

Have a feedback on our recent developments? Please email zosimos-support@chemaxon.com. We would love to hear from you!

15th Nov, 2019: Structure options in multiple choice question type

Get ready to draw the craziest structures in multiple choice questions!

31st Oct, 2019: Multiple choice question type

Yes, multiple choice question type has been added to Zosimos with the possibility to draw chemical structures in the question and defining chemical formulas in the answer options! The correct answer may be a single option or multiple options depending on how the problem was defined. Give it a try and let us know what you think!

24th Oct, 2019: New organic chemistry capabilities

Chemistry is about reactions and reactions are about electron transfers. The check of electron transfers, together with some other long-awaited organic chemistry features, has finally arrived to Zosimos! Use them when creating a quiz to practice Lewis-structures, resonance transitions, and more! Please keep in mind, that now we can only deal with single-step reactions and bond rearrangements.

Lewis structures

During quiz creation, you can add lone pairs to atoms. Answers will only be accepted if the same number of lone pairs are added to the atoms.

Polyatomic ions

The product of acid-base reactions are often polyatomic ions such as nitrate ion. The check of delocalized charges is also possible now.

Resonance and mesomeric transition

Practice virtual bond reordering inside a molecule. Draw curly arrows to indicate the transitions of electrons and Zosimos will check it.

Single-step reaction mechanism

You can now ask fine details about chemical reactions and check for reaction mechanisms easily. Use curly arrows to show the movement of electrons as bonds break and form between atoms.

Have more ideas on how to use these new features? Publish your own quizzes and it may be selected as the quiz of the week in social media!

18th Oct, 2019: Attempts during exercise completion

You might have already experienced that having 3 attempts for each exercise is not always enough for students to find out the correct answer. Or even worse, it's too much...

From now on, the number of attempts for each exercise can be configured when creating quizzes.

When the exercise is being completed, you can try to answer as many times as it was defined.