What's New
This app has been updated by Apple to display the Apple Watch app icon.
- All game modes are available immediately and for free.
- Multiple-choice questions (with 4 or 6 answer options).
App Description
Carboxylic acids and esters are one of the most important classes of organic compounds. They are everywhere:
* in food (citric acid; vinegar = a solution of acetic acid);
* in medicines (aspirin = acetylsalicylic acid);
* in fats (triglycerides are esters of fatty acids and glycerol);
* in plastics (polyesters);
* in biochemistry (transformation of pyruvate through the citric acid cycle);
* and even in ants :) (formic acid)
Learn structures and trivial names of 50 most important carboxylic acids and their esters and salts. Organic Chemistry Quiz:
* Aliphatic saturated acids.
* Unsaturated and substituted acids.
* Di- and tricarboxylic acids.
* Aromatic acids.
* pKa values of all acids!
Choose the game mode:
* Spelling quizzes (easy and hard).
* Multiple-choice questions (with 4 or 6 answer options).
* Time game (give as many answers as you can in 1 minute).
A learning tool:
* Flashcards.
The app is translated into 8 languages, including English, German, French, and many others. So you can learn the names of the carboxylic acids in any of them.
App Changes
- March 25, 2014 Initial release
- April 11, 2014 Price increase: FREE! -> $0.99
- April 18, 2014 Price decrease: $0.99 -> FREE!
- April 19, 2014 Price increase: FREE! -> $0.99
- April 26, 2014 Price decrease: $0.99 -> FREE!
- April 27, 2014 Price increase: FREE! -> $0.99
- May 04, 2014 Price decrease: $0.99 -> FREE!
- May 21, 2014 Price increase: FREE! -> $0.99
- May 28, 2014 Price decrease: $0.99 -> FREE!
- May 29, 2014 Price increase: FREE! -> $0.99
- June 05, 2014 Price decrease: $0.99 -> FREE!
- July 16, 2014 Price increase: FREE! -> $0.99
- July 21, 2014 Price decrease: $0.99 -> FREE!
- July 22, 2014 Price increase: FREE! -> $0.99
- July 27, 2014 Price decrease: $0.99 -> FREE!
- August 01, 2014 Price increase: FREE! -> $0.99
- August 17, 2014 Price decrease: $0.99 -> FREE!
- August 19, 2014 Price increase: FREE! -> $0.99
- August 31, 2014 Price decrease: $0.99 -> FREE!
- September 02, 2014 Price increase: FREE! -> $0.99
- September 07, 2014 Price decrease: $0.99 -> FREE!
- September 22, 2014 Price increase: FREE! -> $0.99
- September 28, 2014 Price decrease: $0.99 -> FREE!
- September 30, 2014 Price increase: FREE! -> $0.99
- October 12, 2014 Price decrease: $0.99 -> FREE!
- October 13, 2014 Price increase: FREE! -> $0.99
- November 17, 2014 Price decrease: $0.99 -> FREE!
- November 19, 2014 Price increase: FREE! -> $0.99
- February 15, 2015 Price decrease: $0.99 -> FREE!
- February 17, 2015 Price increase: FREE! -> $0.99
- February 22, 2015 Price decrease: $0.99 -> FREE!
- February 25, 2015 Price increase: FREE! -> $0.99
- June 14, 2019 New version 2.0