Grade 9 · Chemistry · Semester 1 · 2026–2027

Exploring the building blocks of matter and atomic structure.

Follow along week by week as students progress through fundamental chemical principles, physical and chemical properties, mixtures, elements, and the microscopic architecture of the atom.

Tap any point on the curve — or any week below — to open details.

The semester journey — click a point to jump directly to that week.
W1 W2 W3 W4 W5 W6 W7 W8 W9 W10 W11 W12 W13 W14 W15 W16 W17 W18 W19 W20 ◆ TODAY
Break

National Vacation

Week 5 · Sep 20, 2026

National holiday observance (Sep 23 & 24).

Break

Autumn Break

Week 14 · Nov 22, 2026

Mid-semester scheduled break week.

Checkpoint

Revision Week

Week 18 · Dec 20, 2026

Comprehensive review covering foundational concepts, matter, and atomic theory ahead of final exams.

Checkpoint

Semester 1 Exams

Weeks 19–20 · Dec 27, 2026 – Jan 3, 2027

Semester culmination evaluating core chemistry concepts and atomic structure modules.

W1
Aug 23, 2026
Basic Concepts
Unit 1: Basic Concepts
  • Basic Concepts

Establishing fundamental safety, scientific measurement, and chemistry principles.

W2
Aug 30, 2026
Properties of Matter
Module 2: Matter—Properties and Changes
  • Properties of Matter

Exploring states of matter and physical versus chemical properties.

W3
Sep 6, 2026
Properties of Matter (Continued)
Module 2: Matter—Properties and Changes
  • Properties of Matter

Deepening understanding of extensive and intensive properties of matter.

W4
Sep 13, 2026
Changes in Matter
Module 2: Matter—Properties and Changes
  • Changes in Matter

Distinguishing physical state transformations from chemical reactions.

W5
Sep 20, 2026
Changes in Matter & Holiday
Module 2: Matter—Properties and Changes
Vacation
  • National vacation 23&24
  • Changes in Matter

Analyzing conservation of mass during chemical changes surrounding National Day.

W6
Sep 27, 2026
Elements and Compounds
Module 2: Matter—Properties and Changes
  • Elements and Compounds

Examining pure substances, chemical symbols, and the periodic table overview.

W7
Oct 4, 2026
Elements and Compounds (Continued)
Module 2: Matter—Properties and Changes
  • Elements and Compounds

Understanding chemical formulas and law of definite proportions.

W8
Oct 11, 2026
Mixture of Matter
Module 2: Matter—Properties and Changes
  • Mixture of Matter

Differentiating homogeneous and heterogeneous mixtures.

W9
Oct 18, 2026
Mixture of Matter (Continued)
Module 2: Matter—Properties and Changes
  • Mixture of Matter

Exploring techniques for separating mixtures such as filtration and distillation.

W10
Oct 25, 2026
Early Ideas About Matter
Module 3: The Structure of the Atom
  • L1 Early ideas about matter

Tracing historical atomic models from Democritus to John Dalton.

W11
Nov 1, 2026
Early Ideas About Matter (Continued)
Module 3: The Structure of the Atom
  • L1 Early ideas about matter

Evaluating the experimental evidence that shaped early atomic philosophy.

W12
Nov 8, 2026
Defining the Atom
Module 3: The Structure of the Atom
  • L2 Defining the atom

Discovering subatomic particles: electrons, protons, and neutrons.

W13
Nov 15, 2026
Defining the Atom (Continued)
Module 3: The Structure of the Atom
  • L2 Defining the atom

Understanding Thomson's cathode ray experiments and Rutherford's gold foil experiment.

W14
Nov 22, 2026
Autumn Break
Break
Break
  • Autumn Break

Scheduled autumn break for rest and consolidation.

W15
Nov 29, 2026
How Atoms Differ
Module 3: The Structure of the Atom
  • L3 How atoms differ

Learning atomic number, mass number, isotopes, and atomic mass units.

W16
Dec 6, 2026
How Atoms Differ (Continued)
Module 3: The Structure of the Atom
  • L3 How atoms differ

Calculating average atomic mass from isotopic abundances.

W17
Dec 13, 2026
Unstable Nuclei and Radioactive Decay
Module 3: The Structure of the Atom
  • L4 Unstable nuclei and radioactive decay

Investigating nuclear stability, radioactivity, alpha, beta, and gamma radiation.

W18
Dec 20, 2026
Revision Week
Revision
Revision
  • Revision

Reviewing concepts across all modules prior to final examinations.

W19
Dec 27, 2026
Semester 1 Exams Start
Final Exams
Final Exam
  • Semester 1 Exams Start

Evaluating foundational chemistry concepts, matter modules, and atomic theory.

W20
Jan 3, 2027
Semester 1 Exams Conclude
Final Exams
Final Exam
  • Semester 1 Exams

Finalizing Semester 1 academic assessments.