Chemicals in Industry

Question 6:Diagram 3 shows an experiment to compare the elasticity of a natural rubber, (Rubber P) with a natural rubber that has been soaked in sulphur monochloride solution, (Rubber Q).(a) State one hypothesis for this experiment. [1 mark](b) State the variables in this experiment.(i) Controlled variable [1 mark](ii) Manipulated variable [1 mark](c) Based on this … Read more

Question 4:Diagram 1.1 shows an experiment to study the effect of vinegar and ammonium solution on latex.Diagram 1.2 shows the result of the experiment after 30 minutes.(a) Write down one observation from the result of this experiment. [1 mark](b) State one inference based on the observation in Diagram 1.1. [1 mark](c) State one constant variable … Read more

Question 1:Table shows two examples of alloy and their composition.(a) Based on the Table,(i) name alloy K. [1 mark](ii) name the process to produce alloy K. [1 mark](iii) state the foreign atom in brass. [1 mark](b) match the alloys and their uses. [2 marks]The following information are about an alloy.(c) What is the alloy? [1 … Read more

Question 1:Figure 1.1 shows the formation of bronze.(a) On figure 1.1, name the atoms of metals, P and Q. [2 marks](b) Name process W. [1 mark](c)(i) State one property of bronze. [1 mark]  (ii) State the effect of the atoms of metal Q in bronze. [1 mark](d) The medal in Figure 1.2 is made of bronze.Give one property of … Read more