Question 1:Diagram 1.1 shows an experiment conducted in a science laboratory.Diagram 1.1(a) Name the process occurs in the conical flask in Diagram 1.1.(b) Mark ( √ ) gas W released from the process in 1(a).Diagram 1.2 shows distillation process of mixture K. Mixture K is the product in the conical flask from Diagram 1.1.Diagram 1.2(c) … Read more

Question 1:Diagram 1.1 and Diagram 1.2 show an experiment to study the heat conductivity between metal and non-metal.Table shows the time taken for the thumb-tack to fall after both rods are heated.(a) State one hypothesis for this experiment. [1 mark](b) State the variables in this experiment.   (i) Constant variable [1 mark]   (ii) Manipulated variable … Read more

Question 1:Diagram 1.1 and Diagram 1.2 show an experiment to study the electrical conductivity of lead(II) bromide.(a)(i) Based on Diagram 1.2, what is your observation on the needle of the ammeter? [1 mark] (ii) What is the reading of the ammeter in Diagram 1.2? [1 mark](b) State the variables I this experiment.   (i) Manipulated … Read more

Question 1:Diagram 1.1 shows the structure of an atom.(a) P and Q are subatomic particles.   Name P and Q. [2 marks](b) What is the charge of P? [1 mark](c) What is the nucleon number of this atom? [1 mark](d) Diagram 1.2 shows the structure of three atoms.(i) Which atoms are isotopes? [1 mark]  Mark … Read more

Question 1:Diagram below shows the changes in the state of matter of a substance.Based on the Diagram,(a) name the processes R, S and T using the following information. [3 marks](b) What happens to the kinetic energy of the particles in the substance during process R? [1 mark](c) What happens to the movement of the particles … Read more