Cover
Quick mode selects one question from each of the eight official topics, so no model disappears by chance.
GENERAL CHEMISTRY · ATOMIC AND MOLECULAR STRUCTURE · MIXED PRACTICE
Switch the model.
Keep the constraints.
Retrieve across all eight official topics with coverage-controlled quick and mastery sets drawn from the complete 32-question learning bank.
8official topics
24study objectives
8guided lessons
32practice questions
5choices per question
Why this mix works
Coverage first. Interleaving second.
Retrieve
Mastery mode selects one question from every study objective, forcing a complete 24-objective sweep.
Discriminate
Mixed order removes the lesson cue: decide whether the prompt needs particles, energy, electron accounting, geometry, or vectors.
Repeat
A new set changes selected questions and answer positions while preserving the answer key.
Balanced mixed retrieval
Choose breadth or mastery.
Both modes give immediate explanations and private issue reporting. Results remain on this device and do not estimate a DAT score.
32 PRACTICE QUESTIONS · 2 STUDY MODES
Mix the models. Preserve coverage.
Each mode covers the intended topics, then shuffles question order and all five answer choices without changing the underlying answer key.
Sources
Official scope, original practice.
The eight topic labels come from the ADA DAT User’s Manual 2026 ↗. The ADA does not publish topic quotas, so DAT TRAIN does not invent them.
Free OpenStax chapters support the lessons. DAT TRAIN questions and explanations are original and are not copied from the DAT.