Trendy Chem

Trendy Chem is an app designed to help chemistry students learn about periodic trends and atomic structure. It has a built-in proprietary algorithm that generates random questions each time so that you can keep practicing. You can review all the questions at the end of a session with the correct answers to study.

Category	Price	Seller	Device
Education	Free	Quang Trang	iPhone, iPad, iPod

This app provides:

1) Ranking elements based on periodic trends such as electronegativity, atomic radius, electron affinity, and ionization energy.
2) Study section that provides key information to mastering atomic structures and periodic trends.
3) Three modes of difficulty: easy, normal, and hard.
4) Unlimited number of questions generated, no pre-defined or set questions.
5) Finding the number of electrons, neutrons, and protons for various elements.
6) Practice determining the periodic family for an element.
7) Includes a periodic table and calculator as resources
8) Practice building stable atoms based on certain build requirements
9) Inspirational quotes to keep you motivated!

Reviews

Hit and miss
teebmcgee

There are some useful aspects to this app, including the ability to quickly review the periodic trends and to get a sampling of problems relating to atomic structure. The study guide is also useful. However, the quizzes often mark answers wrong even when they are correct, and you can only review three incorrect answers so you can never be sure if all of your answers really were wrong or not. Also, the "build" section is not explained well and is not intuitive in the least bit. Overall, this only deserves two stars because a quiz that does not correctly grade responses is not a useful practice tool.