Chemistry · Paper 1A · HL

November 2025 TZ1

A video for every question in the Chemistry Paper 1A HL paper from November 2025 TZ1. Each one goes through the question and the thinking behind it, so you can see where your approach differed. Attempt the paper first, then use the grid to jump to whichever questions you need.

Question 1

Question 2

Question 3

Question 4

Question 5

Question 6

Question 7

Question 8

Question 9

Question 10

Question 11

Question 12

Question 13

Question 14

Question 15

Question 16

Question 17

Question 18

Question 19

Question 20

Question 21

Question 22

Question 23

Question 24

Question 25

Question 26

Question 27

Question 28

Question 29

Question 30

Question 31

Question 32

Question 33

Question 34

Question 35

Question 36

Question 37

Question 38

Question 39

Question 40

About this paper

Chemistry Paper 1A at HL has 40 questions and is sat under exam conditions. It covers recall and application across the core syllabus; HL papers add the higher level material on top of the core.

Studying this paper

Don't work through the videos in order. Mark your attempt, then watch only the questions you missed plus the ones you got right on a guess, those are the ones most likely to cost you marks for real. If the misses cluster in one topic, go back to the theory before starting another paper.