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Common Science Mistake

After Science CA1, we looked through and analysed the papers of the students and there are some mistakes that most students get it wrong over and over again in PSLE science across all P4, P5, P6 students.  We have decided to share them with you and may the mistake / misconception get recified once and for all.  PSLE A* Science for the win! For a better view of the questions and answers, you may download the document here . Feel free to post your questions to us if you have any. :) Common Mistake 1 Topic: Matter (Primary4 Science) Qns: An air pump is used to pump air into a tank through an inlet as shown below. The  tank  and  air pump  have a capacity of  500cm³  and  150cm³  respectively. Kaizer added  200cm³ of water  into the tank.  He then pushed the plunger of the air pump 5 times. What is the  volume of air in the tank  now? Mistake: 750cm³ Misconc...