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Chemistry tuition for Tanjong Katong Girls' School students
Live online Chemistry tuition for Tanjong Katong Girls' School students in secondary 3–4. Bring recent schoolwork and teacher feedback so our tutors can see where your child needs help and plan the lessons.
Secondary 3–4
Courses and years
Pure Chemistry
Years 3–4
Combined Science (Chemistry)
Years 3–4
Bring recent schoolwork and the current topic list so we can choose a suitable class.
Study guide · 01
Particles, bonding and structure: explain properties precisely
Pure Chemistry questions can ask students to connect a structure with an observable property. Identify the type of particles, how they are arranged and the forces or bonds relevant to the property. A statement about melting needs a different explanation from one about electrical conductivity, even when both questions concern the same substance.
For a simple molecular substance, distinguish the forces between molecules from the covalent bonds within each molecule. For an ionic substance, distinguish the strength of the lattice interactions from the ability of ions to move. Those distinctions prevent a correct term from being used in an incorrect explanation.
Compare two substances using the same property. Explain how each structure affects it, then describe the difference. Try the explanation aloud without notes. If you are unsure which particles or forces matter, review those first.
Study guide · 02
Chemical calculations: make each step follow the equation
Plan the calculation: convert the given quantity to moles, use the balanced equation’s mole ratio and convert to the quantity asked for. Label each substance so you can check you are comparing the right pair.
Check the conditions in the question. A gas-volume calculation needs the stated conditions or molar volume. A solution calculation needs consistent volume units. If the question supplies information about excess or limiting quantities, use it before deciding how much product can form. Select the method from the evidence given.
The task
5.0 g of calcium carbonate reacts completely with excess hydrochloric acid. Given Mr(CaCO₃) = 100 and a gas molar volume of 24 dm³/mol at the stated conditions, calculate the carbon dioxide volume. Equation: CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂.
Worked response
Amount of CaCO₃ = 5.0 ÷ 100 = 0.050 mol. The CaCO₃:CO₂ mole ratio is 1:1, so 0.050 mol of CO₂ forms. Volume = 0.050 × 24 = 1.2 dm³.
Convert the calcium carbonate mass to moles, then use the 1:1 ratio to find the carbon dioxide amount. The acid is in excess, so the calcium carbonate determines how much gas forms. Finally convert the gas amount to volume.
Study guide · 03
Connect reactions across acids, redox, energetics and rates
Reaction topics become more useful when the student can explain the same change in several ways. An acid reaction can be represented by an equation, identified through observations and used in a calculation. A redox question can ask how oxidation states or electron transfer establish what was oxidised and reduced. Keep the definition connected to the species in the question.
For energetics, track where energy is transferred and distinguish bond breaking from bond formation. For rate questions, identify the changed condition and explain its effect on relevant collisions. If a graph is supplied, distinguish a faster reaction from a larger final amount of product; they describe different features of the results.
The Periodic Table, organic chemistry and air-quality topics also need explanation and application. Use the official outcomes to choose appropriate examples. A named topic is a starting point for revision; the verbs in its outcomes indicate whether the student should recall, explain, calculate or interpret information.
Study guide · 04
Practical Chemistry: observations, data and evaluation
Practical preparation includes choosing a method, making careful observations, processing results and evaluating the conclusion. For qualitative analysis, keep the test, observation and inference as separate steps. A colour change or precipitate is an observation; the identification of a substance is the conclusion supported by it.
When evaluating an experiment, identify the actual source of uncertainty and explain how the proposed change addresses it. Repeating measurements helps examine consistency, but it does not automatically remove a systematic problem in the method. A useful improvement needs a specific reason linked to the apparatus, measurement or procedure.
We use apparatus diagrams, results and experiment questions to practise planning and data interpretation online. Bring practical feedback as well as theory papers. Hands-on apparatus work takes place through the school’s laboratory programme.
Study guide · 05
A revision sequence for Pure Chemistry in Sec 3–4
Review particles, structure, formulae and equations, then practise the calculations and reactions that use them. Use the twelve-topic syllabus to check coverage and try questions without notes to see what still needs work.
Within a topic, alternate explanation questions with calculations and data interpretation where the outcomes require them. Later, mix topics so that the student must choose the relevant idea. Review multiple-choice distractors by explaining why each alternative fails; for structured questions, check that each part of the task has been answered.
Before an assessment, practise timed sections and full papers. Note where you lose time and check the working remains clear. Tutors use those mistakes to plan lessons, followed by platform practice and spaced review. Share the subject code and examination year when arranging a trial.
Study guide · 01
Structured answers: separate an observation from an explanation
Check what the question asks for. An observation describes what is seen or measured. An explanation gives the chemical reason. A conclusion says what the results show. Answer that part directly.
Use precise language. “A gas is produced” identifies an observable change but does not name the gas. Naming a gas requires appropriate evidence or other information in the question. Where an equation is requested, confirm the substances and balance it before using its coefficients in later working.
The task
In a written experiment scenario, a gas is bubbled through limewater, which turns milky. State the observation and the conclusion supported by the test.
Worked response
Observation: The limewater turns milky. Conclusion: The gas contains carbon dioxide.
“Turns milky” is the observation. Carbon dioxide is the conclusion from that test. Keep the distinction when answering other qualitative-analysis questions.
Study guide · 02
Calculations and data questions: show a method that can be checked
Label the substance and quantity on every calculation line. Read any equation or data given before choosing a relationship. Convert units where required and show how the values connect to the unknown. Clear working makes it possible to identify whether an error began with chemistry, unit conversion or arithmetic.
For a graph or table, read the labels and units before interpreting the pattern. Describe a trend using the quantities involved, then use the relevant concept to explain it. A larger final value and a steeper initial gradient can mean different things. Give numerical evidence when the question asks for support from the results.
After checking a calculation, explain why you used those values. This helps you choose the information when another question gives it in a different order.
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Class format
Live online
Weekly duration
1.5 hours
Levels
Secondary 3–4
Between lessons
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Practice is included as part of the classes.
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2027 school year
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Class registration for the 2027 school year is open. Bring recent schoolwork to help us plan a useful first lesson.
About Tanjong Katong Girls' School
PSLE cut-off point for Tanjong Katong Girls' School
MOE publishes the PSLE score of the first and the last student posted into each school at each posting group. Below are Tanjong Katong Girls' School's figures for the 2026 Secondary 1 intake — the 2025 PSLE cohort. The last student's score is what is usually meant by the school's cut-off point.
| Posting group | PSLE score range |
|---|---|
| Posting Group 3 | AL 7–13 |
| Posting Group 2 | AL 21–23 |
Cut-off points move by a few points from year to year, and not every student who met the cut-off was posted here — some are tie-broken out. Read these as a guide to where a school sits, not as a threshold to clear.
Actual 2026 Secondary 1 intake, from MOE School Finder — last verified on 12 August 2026. MOE School Finder ↗
About Tanjong Katong Girls' School
Tanjong Katong Girls' School (TKGS) is a government autonomous girls' secondary school in Katong, Singapore. Established on 12 January 1953, the school was the first post-war government English girls' school built in Singapore.
Founded: 1953
School Overview
Tanjong Katong Girls' School (TKGS) was founded on 12 January 1953 as Singapore's first government English girls' school established after the Second World War. The school initially enrolled 250 pupils across seven classes and was officially inaugurated in 1954. It has since grown into an autonomous, single-session government girls' secondary school with approximately 1,000 students and around 120 teaching staff.
The school operates under the motto Moribus Modestus, meaning "Demure and Resolute," which captures its dual emphasis on poise and inner strength. Its stated vision is to develop each student into a "Gracious Woman, Inquisitive Learner, Servant Leader," while the mission centres on raising lifelong learners and stewards who lead from within. The LEGACY (Leading, Empowering, Guiding, Affirming and Challenging Youths) Programme forms the backbone of the school's character education, weaving moral development into both classroom discussions and experiential activities.
TKGS holds the designation of East Zone Centre of Excellence for English Language and offers specialised tracks that distinguish it among secondary schools. These include the Music Elective Programme (MEP), which allows students to sit for Music as an O-Level examination subject, and the Drama Elective Programme. The school also runs the Chinese Special Programme (CSP) and Malay Special Programme (MSP), supporting bilingual development. Its Applied Learning Programme (ALP) in humanities and social sciences focuses on research-based projects that develop critical and analytical thinking.
Admission Process
Admission to TKGS at Secondary 1 is conducted through two main channels: the PSLE posting exercise and the Direct School Admission (DSA) scheme.
For the PSLE route, entry is determined by Achievement Level (AL) scores. Based on recent intake data, the indicative cut-off points were AL 7 to 12 for Posting Group 3 and AL 21 to 23 for Posting Group 2 (non-affiliated). These figures represent the score of the last student admitted in that posting cycle and may shift from year to year depending on demand.
The DSA scheme enables students to secure a place before PSLE results are released, based on demonstrated ability in specific areas. TKGS accepts DSA applications in categories spanning sports (such as Badminton, Bowling, and Floorball), performing arts (including Choir, Concert Band, Modern Dance, and Symphonic Band), and the Music Elective Programme. Applications are submitted through the MOE DSA portal, which typically opens in the middle of the year for entry the following January.
TKGS follows the O-Level academic track and does not offer the Integrated Programme (IP). Under Full Subject-Based Banding (SBB), students may take specific subjects at different levels from Secondary 2 onwards, allowing them to tailor their academic pathway to individual strengths.
Curriculum and Academic Programme
The TKGS curriculum is structured around core and elective subjects aligned to the MOE O-Level syllabus. Core subjects include English Language, Elementary Mathematics, Additional Mathematics, and the Sciences (Biology, Chemistry, Physics). Students also study Humanities subjects such as Geography, History, and Literature in English, alongside their respective Mother Tongue languages — with Higher Chinese, Higher Malay, and Higher Tamil available for eligible students. Electives span areas including Economics, Art, Drama, Music, Higher Music, Design and Technology, and Food and Consumer Education.
The Multi-Disciplinary Project Work module, undertaken in Secondary 2, uses Future Problem Solving challenges to develop creative and collaborative thinking. The TKGS+ programme provides differentiated learning opportunities matched to students' interests and aptitudes. As the East Zone Centre of Excellence for English Language, the school runs specialised English immersion activities that extend across its curriculum.
The Class of 2024 achieved strong O-Level results, with high distinction rates across English, Mathematics, and the Sciences. The school has a sustained record of academic performance at the national examinations, with past cohorts producing national-level distinction holders in subjects such as Economics.
Facilities and Co-Curricular Activities
TKGS is situated at 20 Dunman Lane, having relocated to this campus in 1995. The campus underwent a major upgrading programme and was fully operational again in 2019. Facilities include air-conditioned classrooms with interactive learning technology, science laboratories, computer labs, a well-stocked library, a multipurpose sports complex, and dedicated arts studios. The campus also features the "Spirit of TKGS" sculpture, a landmark that represents the school's values of resilience and determination.
Co-Curricular Activities (CCAs) are compulsory for all students, with each girl participating in at least one CCA throughout her time at the school. The programme spans four categories:
Sports and Games: Badminton, Basketball, Netball, Softball, Floorball, and Bowling.
Performing Arts: Choir, String Ensemble, Modern Dance, English Drama, and Concert Band. The school has established niches in symphonic band, string ensemble, and choir.
Uniformed Groups: Girl Guides, National Police Cadet Corps (NPCC), and Red Cross Youth.
Clubs and Societies: Art and Crafts, English Language Drama and Debating, Media Resource Library, Infocomm Technology (Media Production), and Community Service.
CCA involvement supports both character development and Values-in-Action (VIA) projects, and strong CCA records can strengthen DSA applications to junior colleges and other post-secondary institutions.
Student Life and School Culture
Daily life at TKGS is organised around morning assemblies, advisory sessions, and a pastoral care structure designed to support each student's well-being and academic development. Class sizes are typically around 40 students, and each class is guided by a dedicated form teacher. The school provides counselling services and runs well-being programmes to help students manage the transition to secondary school and the demands of adolescence.
The school culture places a strong emphasis on student initiative and peer support. Events such as TK Spirit Week bring the school community together, while overseas immersion programmes — including exchanges with Satri Si Suriyothai School in Thailand and cultural trips to destinations such as Batam and Xi'an — broaden students' perspectives. The school also hosts visiting students from China, Brunei, and other parts of Southeast Asia as part of its intercultural education efforts.
Mother tongue instruction is available in Chinese, Malay, and Tamil, with higher-level options for students who qualify. Mental health and resilience programmes are incorporated into the school calendar, and students are encouraged to make use of the school's pastoral resources throughout their secondary years.
Frequently Asked Questions about Tanjong Katong Girls' School
Is Tanjong Katong Girls' School a good school?
TKGS is an autonomous government girls' secondary school with a long track record in both academic achievement and holistic education. It has offered the Music Elective Programme since 1983 and is recognised for its performing arts CCAs, including symphonic band, string ensemble, and choir. The school's LEGACY Programme integrates character development into everyday school life. Whether a school is the right fit depends on the individual student's interests and learning needs.
Is Tanjong Katong Girls' School a co-educational school?
No. TKGS is a girls-only secondary school. It operates as a single-session government autonomous school and enrols only female students.
What are the PSLE cut-off points for Tanjong Katong Girls' School?
Based on recent intake data, the indicative cut-off points for non-affiliated students were AL 7 to 12 for Posting Group 3 and AL 21 to 23 for Posting Group 2. These represent the score of the last student admitted in that cycle and may vary each year after the Secondary 1 posting exercise. The latest figures are available on the MOE SchoolFinder website.
When was Tanjong Katong Girls' School established?
TKGS was founded on 12 January 1953 as Singapore's first post-war government English-medium girls' school. It was officially inaugurated in 1954 and has since marked several milestones, including its 50th anniversary in 2003, 60th in 2013, and 65th in 2018.
What is the history of Tanjong Katong Girls' School?
TKGS opened in 1953 with seven classes and 250 pupils, expanding to a double-session school by 1960. The Music Elective Programme was introduced in 1983, and the school gained autonomous status in 1995. It moved to its current campus at 20 Dunman Lane, which was officially opened in 1997. A campus upgrading programme was completed in 2019, returning students and staff to the refurbished site.
What subjects are offered at Tanjong Katong Girls' School?
The school offers English Language, Mathematics, Additional Mathematics, Science, Biology, Chemistry, Physics, Chinese Language, Higher Chinese, Malay Language, Higher Malay, Tamil Language, Higher Tamil, Geography, History, Literature in English, Humanities (Social Studies combined with Geography, History, or Literature), Art, Design and Technology, Food and Consumer Education, Music, Higher Music, and Physical Education. The Music Elective Programme is also available for eligible students.
What CCAs are available at Tanjong Katong Girls' School?
Sports: Badminton, Basketball, Netball, Softball, Floorball, Bowling. Uniformed Groups: Girl Guides, NPCC, Red Cross Youth. Performing Arts: Choir, String Ensemble, Modern Dance, English Drama, Concert Band. Clubs and Societies: Art and Crafts, English Language Drama and Debating, Media Resource Library, Infocomm Technology (Media Production), Community Service. The school has established niches in symphonic band, string ensemble, and choir.
What is the Music Elective Programme at Tanjong Katong Girls' School?
The Music Elective Programme (MEP) has been part of TKGS since 1983, making it one of a select group of schools where students can take Music as an examinable O-Level subject. The programme provides structured, in-depth music education for students with a strong interest in the performing arts.
What is the LEGACY Programme at Tanjong Katong Girls' School?
LEGACY stands for Leading, Empowering, Guiding, Affirming and Challenging Youths. It is the school's integrated character development programme, designed to nurture leadership qualities, moral values, and a sense of social responsibility through a combination of classroom instruction and experiential learning activities.
What does the school crest of Tanjong Katong Girls' School represent?
The crest features a lion atop a tower, symbolising strength and vigilance. Within the crest are panels in gold and maroon displaying a turtle (perseverance), a wheel (progress), a lamp (knowledge), and a winged shoe (swiftness). Together, these elements represent the school's commitment to an all-round education.
What is the school song of Tanjong Katong Girls' School?
The school song includes the lines: "We cannot all be heroes and thrill a hemisphere... But we can fill a lifetime with kindly acts and true... So let us serve with honour and work for selfless fame, For credit of our country and glory of her name." Its themes centre on noble service, unity, and national pride.
What facilities does Tanjong Katong Girls' School have?
The campus at 20 Dunman Lane includes air-conditioned classrooms with interactive technology, science laboratories, computer labs, a library, a multipurpose sports complex, and arts studios. The school also has barrier-free accessibility features and Special Educational Needs Officers on staff. The campus was fully refurbished following an upgrading programme completed in 2019.
What is the contact information for Tanjong Katong Girls' School?
Address: 20 Dunman Lane, Singapore 439272. Phone: 6344 1593. Email: [email protected]. Website: https://www.tkgs.moe.edu.sg.
Does Tanjong Katong Girls' School offer overseas programmes?
Yes. TKGS participates in the Singapore-Thailand Enhanced Partnership (STEP) Programme with Satri Si Suriyothai School and hosts visiting students from countries including China and Brunei. The school also organises cultural exchange trips to destinations such as Batam and Xi'an.
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