Past Papers › P5 Science › 2025 ACS Primary
P5 Science 2025 — ACS Primary WA3 Weighted Assessment
Free online practice with instant marking and AI-tutor explanations for Singapore P5–P6 students.
Practise this paper online — free
View the free PDF (free sign-up) →
| Level | P5 (Primary 5) |
| Subject | Science |
| Year | 2025 |
| School | ACS Primary |
| Paper type | WA3 Weighted Assessment |
| Total questions | 8 |
| Question format | 4 multiple-choice, 4 open-ended |
| Booklets | Booklet A (MCQ) · Booklet B (open-ended) |
| Original paper | 11-page PDF |
This is the 2025 ACS Primary P5 Science WA3 paper, a 8-question exam made up of 4 multiple-choice questions and 4 open-ended questions. On ChatPSLE you can attempt every question online, get it marked instantly, and ask an AI tutor to explain any answer step by step — instead of just downloading a static PDF.
Topics covered
DiversityCyclesSystemsInteractionsEnergy
Sample questions from this paper
The diagram below shows the movement of blood in the human circulatory system to parts of the body. The arrows A, B, C and D represent blood vessels. Which statement describes the content of the blood in blood vessels A, B, C and D?
- The blood in C has more oxygen than in B.
- The blood in D has more oxygen than in A.
- The blood in A has less carbon dioxide than in D.
- The blood in B has more carbon dioxide than in C.
The pie chart below shows the proportion of gases in air exhaled by a person. Which pie chart shows the proportion of gases in inhaled air?
Jacob carried out an experiment using the set-up below with four leaves $W, X, Y$ and $Z$ of the same size and from the same plant. He coated some of the leaf surfaces with oil that did not drip. Each leaf was then weighed and hung up in an open space as shown below. After six hours, each of the leaves were weighed…
Want the full 8-question paper with instant marking? Open it in ChatPSLE →
More ACS Primary papers
2025 P6 Chinese — ACS PrimarySA2 Preliminary Examination · 40 questions2025 P6 Math — ACS PrimaryWA1 Assessment · 6 questions2025 P6 Math — ACS PrimaryWA2 Assessment · 10 questions2025 P6 Math — ACS PrimaryWA3 Assessment · 30 questions2025 P6 English — ACS PrimaryWA1 Non-Weighted Assessment · 5 questions2025 P5 Science — ACS PrimarySA2 Semestral Assessment 2 · 41 questions
Other P5 Science papers
2025 P5 Science — ACS JuniorSA2 Semestral Assessment 2 · 41 questions2025 P5 Science — ACS JuniorWA1 Non-Weighted Assessment · 7 questions2025 P5 Science — ACS JuniorWA2 Weighted Assessment · 8 questions2025 P5 Science — ACS JuniorWA3 Weighted Assessment · 10 questions2025 P5 Science — ACS PrimarySA2 Semestral Assessment 2 · 41 questions2025 P5 Science — ACS PrimaryWA1 Non-Weighted Assessment · 7 questions
Other 2025 Science papers
2025 P6 Science — ACSWA1 Non-Weighted Assessment · 18 questions2025 P5 Science — ACS JuniorSA2 Semestral Assessment 2 · 41 questions2025 P5 Science — ACS JuniorWA1 Non-Weighted Assessment · 7 questions2025 P5 Science — ACS JuniorWA2 Weighted Assessment · 8 questions
Frequently asked questions
- Is the 2025 ACS Primary Science paper free?
- Yes. You can attempt this P5 Science paper online for free on ChatPSLE. A premium plan adds step-by-step worked explanations and unlimited AI tutoring.
- How many questions are in this Science paper?
- It has 8 questions in total — 4 multiple-choice and 4 open-ended.
- Can I get answers and explanations?
- Yes. ChatPSLE marks your answers instantly and its AI tutor explains the reasoning for each Science question, worked out step by step.