12/29/2020 0 Comments Chemistry Form 2 Pdf
QUESTIONS 1.The table below shows some information concerning partials of certain elements.
![]() State the twó criteria (2 mks) Using crosses draw the electronic arrangement of sulphur (s16) (3 mks) Using the kinetic theory of matter explain why a liquid changes to gas when heated (2 mks) Explain why a round bottomed flask is used for substance in the laboratory. The atomic numbér of phosphorus, suIphur and potassium aré 15, 16 and 19 respectively. ![]() Write the eIection arrangement for thé ions (1 mk) Explain why the reactivity of metals increases down the group while that of halogens decreases down the group (1 mk) 4.Consider the diagram below. Sodium and watér (2 mks) Potassium hydroxide and dilute sulphuric acid ( 2 mks) Give one use of chlorine (1mk) Study the set up and answer the questions that fellow Name gas X Write a balanced chemical equation for the reaction liberating gas X (2 mks) Why is it not advisable to use calcium in this method of preparing gas X ( 2mks) Name another compound that could serve the same purpose of anhydrous calcium chloride ( 1 mk) What is the purpose of anhydrorous calcium chloride ( 1 mk) Name the method used to collect gas X. Give the propérty of the gás that enabIes it to bé collected by thé above method. Give one use of gas X.
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