More questions now support typed numerical answers, including scientific notation, with clearer feedback. Guided lessons, accessibility, and dark mode have also been improved.

Practice now teaches as well as tests. Throughout all 15 topics, questions can include brief, focused concept and strategy guidance before you answer—helping you connect chemical ideas to the problem in front of you. Guidance is tailored to the question without giving away the answer, while Challenge and Review activities remain independent practice. This update also includes learning-flow, localization, and reliability improvements.

This update adds 128 new, carefully authored reasoning questions, bringing the question bank to 1,722. Visual-reasoning practice is now woven more naturally into study sessions to help connect equations, graphs, particle-level models, and chemical concepts. We also strengthened localization across all supported languages and polished navigation and study continuity.

• New iPad layouts designed for the larger screen. • Resume learning and practice exactly where you left off. • Smarter review and recommendations, plus accessibility, localization, and interface improvements.

This release includes code updates and app improvements to keep your General Chemistry study experience running smoothly.

Interactive Worked Problems are now available across General Chemistry. Work through the concept, strategy, setup, and final answer with guided multiple-choice reasoning steps. If you get stuck during practice, you can now open a similar worked example and then return to the same unanswered question. This update also expands worked-example problem types, improves graph labels and scales, uses scientific notation where appropriate, keeps the Next Step control easy to reach, and adds more varied, chemistry-specific distractors.

This update brings major improvements across General Chemistry Tutor. The question bank has been refined for clearer wording, consistent chemistry notation, and better question quality. A new searchable Chemistry Reference provides key equations, constants, common ions, solubility rules, and acid–base tools, and can be opened while answering questions. Mastery and Review tracking are now more accurate and persistent. Accessibility has also been improved for graphs, molecules, particle diagrams, atomic models, and measurement visuals, along with interface, localization, and reliability improvements.

Explore General Chemistry with clearer topic cards, improved light and dark themes, streamlined settings, expanded language support, and more consistent practice and review screens.

Code improvements and added localizations

Code updates and accessibility improvements

code improvements, refinements, and optimizations