alright...this one is the complete version of definition lists for chemistry (form 4)...have fun...Full description
questions paper consist of paper 1 and paper 2 for final exam form 4.
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Analytical Chemistry Exam
for school works mid termFull description
NAME : ____________________________________
CLASS : ______
SEKOLAH MENENGAH KEBANGSAAN SULTAN BADLISHAH 09000 KULIM, KEDAH
OCT 4541/2 Chemistry 2 1/2 hours
FINALTERM EXAMINATION FORM FOUR 2012
CHEMISTRY FORM 4
Two hours and thirty minutes
DO NOT OPEN THIS QUESTION PAPER PAPER UNTIL YOU ARE TOLD TO DO SO E*aminer9s Code
1 This !uestion "a"er #onsists o$ Se#tion & and Se#tion C
Pa%&
uestion
2 Answer all !u ! uestions in Se#tion A
1 2 ) 4 5 3 16
A in in the s"a#es "ro(ided in the !uestion "a"er ) Answer any !" !u ! uestion $rom $rom Se#tion C
A
'rite your answers $or Se#tion & sheets "ro(ided 4 +o +ou may use e!uations% dia,rams%
B C
methods to e*".ain your answer
;u.. mar0s
Mar0s are re#orded
16 16 16 16 16 16 26 26 26 26
TOTAL
5 The dia,rams in the !uestions are
three se#tions: Se#tion A%
'rite your answers $or Se#tion
Se#tion & and any !" !uestion
and C on the e*amination
ta-.es% ,ra"h and other suita-.e
not drawn to s#a.e un.ess
stated Mar0s a..o#ated $or ea#h !uestion !uestion or "art !uestion are shown in -ra#0ets -ra#0ets Show your wor0in, t may he." he." you to ,et mar0s 3 $ you wish to #an#e. any answer% neat.y #ross #ross out the answer that you ha(e done Then write down the new answer The eriodi# Ta-.e Ta-.e o$ E.ements is "ro(ided 16+ou 16+ou may use a non7"ro,ramma-.e s#ienti$i# #a.#u.ator 11 11 +ou +ou are ad(ised to s"end 6 minutes to answer !uestions in Se#tion A% )6 minutes $or Se#tion & and )6 minutes $or Se#tion C 12 8and in this !uestion "a"er and the e*amination sheets at the end o$ the e*amination
PREPARED BY#
CHECKED CHECKE D BY#
APPRO$ED BY#
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This question paper consists of __ printed pages. SECTION A [60 marks]
Answer all questions in this section.
1. Diagram shows the heating curve of solid Y at room conditions.
(ii !hat is the "h&sical state of su#stance Y from ' to $ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1mark] (iii )*"lain wh& there is no change in tem"erature from ' to $
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [+ marks] (iv Draw the arrangement of "articles in Y from to ,$
[1mark]
(# a#le shows the "roton num#er and nucleon num#er of elements A- D- ) and . )lement A D )
/roton num#er 6 13
ucleon num#er 1+ 16 12 41
(i !hat is the meaning of nucleon num#er$ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1mark] (ii !hich atoms are isoto"es$
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1mark] (iv !rite the electron arrangement of atom A. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% (v Draw the electron arrangement of atom .
[1mark]
[1mark]
+. Diagram shows the "osition of seven elements A- D- )- - 5- and 7 in the "eriodic ta#le. hese are not the actual s&m#ol of the elements.
8& using the s&m#ols in diagram 4- answer the following questions9 (a 'tate three elements that are metals.
(# !hich element forms coloured com"ounds when reacted with other elements. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1mark] (c !hen a small "iece of element is "ut into water- an alkaline solution is formed and h&drogen gas is released. (i !rite the chemical equation for the a#ove reaction. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1mark] (ii 'tate one "recaution that must #e taken while carr&ing out the e*"eriment using element . %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1mark] (d )lement has man& a""lications in dail& life. 'tate one. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1mark] (e )lement 5 reacts with element D to form a com"ound. (i !rite chemical formula for this com"ound. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1mark] (ii Draw the diagram of the electron arrangement for the com"ound that is formed #etween element 5 and D.
[+ marks] (f )lement A can com#ine with element ) to form a com"ound. (i !hat is the t&"e of com"ound formed$ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1mark] (ii 'tate one "h&sical "ro"ert& of the com"ound. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
[1mark]
4. he diagram #elow shows the arrangement of a""aratus used to "re"are h&drogen chloride in meth&l #en:ene and in water res"ectivel&.
(a !hat is the "ur"ose of using filter funnels in this e*"eriment $ %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
[1 mark] (# (i !hat is o#served when a "iece of magnesium ri##on is "laced in 8eaker A and 8eaker 8 res"ectivel&. 8eaker A 9 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 8eaker 8 9 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [+ marks] (ii 'tate the reason for &our answer in #(i %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
[1 mark]
(c ame the t&"es of "articles "resent in 8eaker A 9 %%%%%%%%%%%%%%%%%%%%% 8eaker 8 9%%%%%%%%%%%%%%%%%%%% [+ marks] (d !ater is added to the solution in 8eaker A and the mi*ture is then shaken. !hen sodium ;ar#onate solution is added- effervescence occurs. (i ame the gas and suggest a suita#le test to identif& the gas evolved. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [+ marks] (ii 'tate the role of water that caused the li#eration of the gas. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1mark] (iii !rite the ionic equation for the reaction involving the li#eration of the gas. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1 mark] <. Diagram #elow shows the a""aratus set=u" used to electrol&:e 0.1 mol dm=4 of sodium
chloride solution using car#on electrodes.
(a ame electrodes X and Y . %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1 mark] (# !rite the formula of all ions "resent in the solution. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1 mark] (c (i ame gas P collected in the test tu#e. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1 mark] (ii 'tate a chemical test to confirm &our answer to (c(i. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1mark]
(iii !rite a half equation for the reaction that takes "lace at electrode X . %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1 mark] (d (i ame gas Q collected in the test tu#e. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1 mark] (ii 'tate a chemical test to confirm &our answer to (d(i. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1 mark] (iii !rite a half equation for the reaction that takes "lace at electrode Y . %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1 mark] =4 (e !hat difference will it make if the e*"eriment is re"eated #& u sing + mol dm of sodium chloride solution$ )*"lain &our answer. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [+ marks] 3. (a Diagram #elow shows a series of tests "erformed on a colourless solution which contains one cation and two anions. ;olourless 'olution Test 1
Test 3
+ NaOH (aq), then
?a"our "roduced turns dam" red litmus "a"er to #lue
+ HNO3(aq), AgNO 3
!hite "reci"itate formed. Test 2
8rown ring formed
(i 8ased on the o#servation in the diagram- com"lete the ta#le #elow with a""ro"riate inferences. est >nference 1 + 4 [4 marks] (ii !rite the ionic equation for the reaction in est 4.
(# A student wants to "re"are a "ure sam"le of cr&stalline :inc sul"hate #& reacting dilute sul"huric acid with su#stance @. (i ame the su#stance @. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1 mark] (ii !rite an equation for the a#ove reaction. %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% [1 mark] (iii ;alculate the ma*imum mass of :inc sul"hate that can #e "re"ared if 30.0cm4 of 0.+moldm=4 sul"huric acid is reacted with e*cess @. [ he relative formula mass of :inc sul"hate 161]
