dMAT Chemistry Module 2026: Syllabus, Format, Practice Questions

Chemistry is one of the five dMAT Subject Modules you can take for the MSc Battery Science and Technology in Engineering at RWTH Aachen University. The dMAT Chemistry Module tests your understanding of core chemistry concepts through Basic and Advanced tasks.

This guide covers everything you need to know about the Chemistry Module in the dMAT exam, including the syllabus, practice questions, preparation tips, and a study plan.

Key Highlights:

• The dMAT Chemistry Module is a 90-minute Subject Module that tests Chemistry fundamentals through Basic and Advanced Tasks.
• The dMAT Chemistry syllabus covers redox reactions in the Basic Task, followed by acid-base reactions and infrared spectroscopy in the Advanced Tasks.
• The dMAT Chemistry exam pattern uses single-choice questions with four options based on input texts that may include figures, tables, or formulas.

dMAT Chemistry Module Overview

Chemistry is one of the seven dMAT Subject Modules, alongside a dMAT Core Module that every dMAT candidate takes regardless of field. RWTH Aachen University is currently the only university that uses the dMAT Chemistry Module, and it uses it exclusively for applicants to its MSc Battery Science and Technology in Engineering programme.

dMAT Chemistry Module Syllabus

The dMAT Chemistry Module does not follow a fixed textbook syllabus. It tests how well you apply Bachelor's-level chemistry knowledge to a worked problem, not how much you can recall from memory. In the Basic Task, you answer questions on Chemistry, Physics, Computer Science, Electrical Engineering, and Mechanical Engineering. You then proceed to the Advanced Task, which covers topics such as acid-base reactions and infrared spectroscopy. 

Basic Task: Redox reactions

The basic task in the dMAT Chemistry Module focuses on redox reactions. It includes questions on how to assign oxidation numbers, distinguish oxidation from reduction, and identify a redox reaction from a chemical equation, including cases involving covalent bonding rather than pure ionic electron transfer.

Advanced Task 1: Acid-Base Reactions

The first advanced task in the dMAT Chemistry Module tests your knowledge of acid-base reactions. It covers the autoprotolysis of water, the ion product of water (Kw), acid and base dissociation constants, the Henderson-Hasselbalch equation, pH calculation for strong and weak acids, buffer solution behaviour, and titration curve interpretation.

Advanced Task 2: Infrared Spectroscopy

The second advanced task in the dMAT Chemistry Module focuses on physical chemistry. It tests the relationship between vibrational frequency, bond strength, and atomic mass, the change in dipole moment that makes a molecule IR-active, the quantum harmonic oscillator model, and how rotational transitions split an IR spectrum into P-branch and R-branch peaks.

dMAT Chemistry Practice Questions

The three questions below follow the exact format used in the dMAT Chemistry Module: a short input text followed by a single-choice question with four options. Work through them without a calculator or notes to simulate actual exam conditions.

Sample Question 1: Basic Task 

Magnesium burns in oxygen to form magnesium oxide: 2 Mg + O2 → 2 MgO

What happens to magnesium and oxygen in this reaction?

1. a) Magnesium is reduced, and oxygen is oxidised.
2. b) Magnesium is oxidised, and oxygen is reduced. 
3. c) Both magnesium and oxygen are oxidised. 
4. d) No redox reaction takes place, since both elements start in their elemental form.

Answer: b

Magnesium starts with an oxidation number of 0 as an element and ends at +2 in MgO, meaning it loses electrons and is oxidised. Oxygen starts at 0 and ends at -2 in MgO, meaning it gains electrons and is reduced. A change in oxidation number on both sides confirms this is a redox reaction, ruling out option d.

Sample Question 2: Advanced Tasks 

A buffer solution contains acetic acid (CH3COOH) and its conjugate base, sodium acetate (CH3COO⁻), in a concentration ratio of 1:10. Acetic acid pKa is 4.76.

Using the Henderson-Hasselbalch equation, what is the approximate pH of this buffer?

3. a) pH = 3.76 
4. b) pH = 4.76 
5. c) pH = 5.76 
6. d) pH = 6.76

Answer: c

The Henderson-Hasselbalch equation states pH = pKa + log([A⁻]/[HA]). With the conjugate base ten times more concentrated than the acid, log(10/1) = 1. Adding this to the pKa of 4.76 gives a pH of 5.76. A ratio favouring the conjugate base always pushes the pH above the pKa, which eliminates option A.

Sample Question 3: Advanced Task 2

Two diatomic molecules are compared: one has a C-H bond, and the other has a C-Cl bond. The C-H bond is stronger and lighter (lower reduced mass) than the C-Cl bond.

Based on the relationship between vibrational frequency, bond strength, and reduced mass, which bond shows the higher IR vibrational frequency?

1. a) The C-Cl bond, because chlorine is more electronegative. 
2. b) The C-H bond, because it is both stronger and has a lower reduced mass. 
3. c) Both bonds show the same frequency, since vibrational frequency depends only on bond strength. d) Neither bond is IR-active, since both involve a nonpolar arrangement.

Answer: b

Vibrational frequency ν₀ is proportional to the square root of bond strength (k) divided by reduced mass (µ). A stronger bond raises the frequency, and a lower reduced mass raises it further, so a bond that wins on both counts, like C-H against C-Cl, always shows the higher frequency. Option a is a distractor built on electronegativity, which affects dipole moment and IR activity but not the frequency itself.

4-Week Study Plan for the dMAT Chemistry Module

The 4-Week Study Plan for the dMAT Chemistry Module helps you organise your preparation into four focused stages. Since notes and calculators are not allowed in the exam, practice every mental calculation exactly the way you will need to perform it on test day.

Tips to Prepare for the dMAT Chemistry Module

These preparation strategies help you revise key Chemistry concepts, interpret input-based questions, and build the speed and accuracy you need for the dMAT Chemistry Module.

• Drill mental arithmetic early: With no calculator or scratch paper permitted, pH calculations, oxidation number balancing, and resistor network sums all have to be done in your head. Practice this from week one rather than relying on paper until later.
• Work with the input text, not around it: Every question is built around a short passage with figures, tables, or formulas. Read it fully before jumping to the answer options, since the passage often contains the exact relationship, such as the Henderson-Hasselbalch equation or the vibrational frequency formula, that the question expects you to apply.
• Time each section independently: The Subject Module gives you 90 minutes in total without a stated per-question limit, so pace yourself against the number of questions rather than the clock alone, and flag anything you are unsure about to revisit if time allows.
• Revise applications, not definitions: The dMAT tests whether you can apply Bachelor's-level chemistry to a new scenario, so practising with varied numbers and contexts is more useful than re-reading textbook definitions.

From the Desk of Yocket

The dMAT Chemistry Module tests more than your ability to recall chemistry concepts. You need to apply familiar principles to unfamiliar problems, interpret the information provided in each question, and work accurately without relying on a calculator or notes.

Yocket Prep can help you strengthen your concepts, practise exam-style questions, and improve your speed through targeted preparation. With consistent practice, you can approach the dMAT Chemistry Module with greater speed, accuracy, and confidence.