SPM Science Blog
Question 13:The percentage of carbon dioxide gas is increasing within the last 10 years due to various of human activities.(a) State two processes that release carbon dioxide gas to the atmosphere. [2 marks](b) Diagram 12 shows a symbol of a process to dispose waste.Describe how the process in Diagram 12 brings positive impacts towards air … Read more
Question 11:There are two water taps on two different walls of the fence. One of the water taps on the wall of the fence is broken, causing water to drip out continuously.Diagram 10 shows the condition of the wall of the fence after a month.Based on the situation in Diagram 10, plan an experiment in … Read more
Question 9:Diagram 8 shows a usage of ethanol in daily life.(a) Based on Diagram 8, state the colour of the flame. [1 mark](b) A woman uses a make up cleanser that contains alcohol to remove oil-based make-up.State the role of alcohol in the situation.[1 mark](c) Table 4 shows the characteristics of ethanol and a hydrocarbon … Read more
Question 7:Diagram 6 shows the ray diagrams for lenses, J and K.(a) State the type of lens J. [1 mark](b) State two examples of optical instruments that apply lens J so that objects can be seen more clearly.b [2 marks](c) Based on Diagram 6, compare and contrast the characteristics of image for lenses J and … Read more
Question 5:Diagram 4 shows the arrangement of homologous chromosomes for two different individuals.(a) Each chromosome contains a long DNA molecule.State the content in DNA molecule which determines an individual’s characteristic. [1 mark](b) Based on Diagram 4, state the type of mutation experienced by individual Q. [1 mark](c) A doctor wants to detect the abnormalities at … Read more
Question 3:Diagram 2.1 shows the apparatus set-up to estimate the calorific value for a cashew nut and an almond. The initial temperatures of water for both samples is 28 °C.Diagram 2.2 shows the final temperatures of water for both samples.(a) Based on Diagram 2.2, state the value of Q.………………… oC[1 mark](b) Based on the experiment, … Read more
Question 1:A group of students carried out an experiment to investigate the type of variation for the types of blood group among the students.Diagram 1 shows the types of blood groups for 20 students.(a) Complete Table 1 to show the number of students for each type of blood group. [2 marks](b) Based on the data … Read more