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Akhmalazmi86@blogspot.com Form 4 Chapter 4

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CHAPTER 4 : PERIODIC TABLE OF THE ELEMENTS

ANALYSIS OF PAST YEAR QUESTIONS FROM 2003 2008

Year 2003 2004 2005 2006 2007 2008

Paper No. P2 P3 P2 P3 P2 P3 P2 P3 P2 P3 P2 P3

Type of

question S E S E S E S E S E S E S E S E S E S E S E S E

Question No 2 1 85a

5

5!

2 2

STRUCTURED QUESTIONS

1 SPM 2003/P2/Q2

Table 2 shows part of the Periodic Table of Elements.

Figure 2

Based on Figure 2, answer the following questions.a) hat is the element represented b! the s!mbol Fe"

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b) &n figure 2, mar' (* in the bo+es for all the transition elements.$1 mark%

c) tate one specific characteristic of transition elements.

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d) rite the electron configuration for the -g atom.

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$1 mark%

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e) i) rite the chemical equation for the reaction between aluminium and o+!gen.

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ii) Briefl! state the electron transfer in the bond formation between aluminium ando+!gen.

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f)

Helium Gas Hydrogen Gas

" #i$%t " #i$%t

" not rea!ti&e " f#a''a#e" !o#or#ess " !o#or#ess

Based on the aboe information, which gas is more suitable to be used inmeteorological balloons"/ie one reason.

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$2 marks%

2 SPM 2005/P2/Q1

Figure 1 shows part of the Periodic Table of the Elements.0, , T, and do not represent the actual s!mbol of the elements

Figure 1a) 3sing the letters in the Periodic Table of the Elements in the Figure 1, answer the

following questions.ou ma! use the Periodic Table of the Elements on page #####i) 4hoose an element that is a halogen.

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ii) hich element is monoatomic"

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iii) hich element forms an amphoteric o+ide"

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b) 5rrange 0, , T, and according to increase in si6e of the atoms.

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$1 mark%

c) rite the electron arrangement for an atom of element 0.

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d) rite the formula for the ion formed from an atom of element .

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e) h! are elements 0 and placed in the same period"

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f) hen a small piece of element T is put into water, T78 solution is formed andh!drogen gas is released.tate one obseration when red litmus paper is put into the solution.

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g) tate the common name of the elements between group 2 and group 19.

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3 SPM 2007/P2/Q5

:iagram ; shows the s!mbols of the atoms of element and element .The letter used are not the actual s!mbols of the elements.

:iagram ;

a) tate the proton number of the atom of element

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$1 mark%

b) i) &dentif! the position of element in the Periodic Table of Elements.

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ii) E+plain wh! element is placed at the position identified in ;

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d) F4 Topic : The Structure of the atom

2.9 g of element reacted completel! with o+!gen.

The following equation represents the reaction.

$elatie atomic mass>X ? 29, 7 ? 1@%

i) 4alculate the number of moles of element .

ii( 4alculate the ma+imum mass ofX2)

for'e*.

$1 mark%

+9 marks,

4 SPM 2008/P2/Q2

Table 2.1 shows a group of elements.

Table 2.1

a) &n which group of the Periodic Table are these elements located"

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b) rite the electron arrangement for an atom of fluorine.

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c) Fluorine atoms are smaller than chlorine atoms.E+plain wh! fluorine forms a negatie ion more easil! than chlorine.

4X-s( )2-g( 2X2)-s(

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$2 marks%

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d) tate the t!pe of chemical bond in an iodine molecule.

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e) 4hlorine reacts with sodium to form a compound.i) tate the t!pe of chemical bond in this compound.

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ii):raw a diagram to show the electron arrangement in thiscompound. $Proton number of Aa ? 11%

$2 marks%f) Table 2.2 shows three pairs of chemicals.

Chemic!"

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CHAPTER 4 : PERIODIC TABLE OF THE ELEMENTS

1 SPM 2003/P2/Q2

a) &ronDFerum

b)

c) 1. Formed compound with different o+idation numbers2. Formed colored ions or compound9. Formed comple+ ions. 5s a catal!st

d) 2..2

e) i) 5l C 972 2 5l279ii) A!#mini#m $om %e!e"e" 3 e!ec$%on" to form aluminium ion,

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d) i) Aumber of moles of element ? 2.9D29? G.1

ii) elatie molecular mass of 27? @ C 1@? @2 moles of 2 moles of 27

G.1 mole of G.G; mole of 27

-a+imum mass of 27? G.G; + @2

? 9.1 g

4 SPM 2008/P2/Q2

a) /roup 1Hb) 2.Hc) The outermost occupied shell of a fluorine $om is nearer to the nucleus. The

"$%en($h o* $he *!#o%ine n#c!e#" $o $$%c$ e!ec$%on" i" hi(he%. F!#o%ine$om cn cce0$ e!ec$%on e"i!' to form negatie ions.

d) 4oalent bonde) i) &onic bond

ii) "

f)

Na

/#"

Chemic!"

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CHAPTER 4 : PERIODIC TABLE OF THE ELEMENTS

ANALYSIS OF PAST YEAR QUESTIONS FROM 2003 2008

Year 2003 2004 2005 2006 2007 2008

Paper No. P2 P3 P2 P3 P2 P3 P2 P3 P2 P3 P2 P3

Type of

question S E S E S E S E S E S E S E S E S E S E S E S E

Question No 2 1 85a

5

5!

2 2

1 SPM 2006/P2/Q8(S!T"#$ %&

:iagram .1 and diagram .2 shows the diagrams of the electron arrangement for atoms

of two elements from /roup 1H in periodic Table of Elements.

:iagram .1 :iagram .2

a) Based on :iagram .1>

i) rite the electron arrangement for the atom of the element and name theelement.

$2 marks%

ii) rite a chemical equation for the reaction between this element andsodium h!dro+ide.

$9 marks%

b) 4ompare the attractie forces between the nuclei and the alence electrons in theatoms in :iagram .1 and .2 and relate this to their respectie reactiit!.

$@ marks%

c) 5nother element in /roup 1H is blac' colored solid.Predict the reactiit! of this element in its reaction with sodium h!dro+ide comparedto that of the element in :iagram .2.

$1 mark%

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d) :iagram .9 shows the set=up of the apparatus to inestigate the reaction of anelement from /roup 1H with iron metal.

:iagram .9

i) tate $,o precautions that must be ta'en while carr!ing out the e+periment.$2 marks%

ii) :escribe and write the chemical equations for the reaction that occur in Part/ and Part 8.

$@ marks%

2 SPM 2008/P3/Q2

The three statements below describe the obseration made when three elements reactwith water. The elements are in /roup 1 of the Periodic Table of elements.

tatement 1

Iithium, Ii, moes slowl! at random on the surface of the water with a little fi66ing.The water then turns red litmus paper to blue.

tatement 2

odium, Aa, moes rapidl! at random on the surface of the water with a (hissing* sound.The water then turns red litmus paper to blue.

tatement 9

Potassium, , moes er! rapidl! at random on the surface of the water. &t ignites withlilac flame with a (pop* and a (hissing* sound. The water then turns red litmus paper toblue.

Plan a laborator! e+periment to inestigate the reactiit! of lithium, sodium and potassiumwith water.

our planning should include the following aspects>

a) 5im of the e+periment

b) 5ll the ariablesc) tatement of the h!pothesisd) Iist of substances and apparatus

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e) Procedure of the e+perimentf) Tabulation of data

$1H marks%

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CHAPTER 4: PERIODIC TABLE OF THE ELEMENTS

1 SPM 2006/P2/Q8(S!T"#$ %&

a) i) The electron configuration is 2..H. The element is chlorine.

ii) 4l2 eactiit! of metals

Fi+ed ariable > ater, si6e of al'ali metal

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c) tatement of the h!pothesis >

hen going down /roup 1, al'ali metals become more reactie in their reactionwith water.

d) Iist of substances and apparatus >

ubstances > mall pieces of lithium, sodium and potassium, filter paper,distilled water, red litmus paper

5pparatus > ater troughs, small 'nife, forceps

e) Procedure of the e+periment >

1. 4ut a small piece of lithium using a 'nife and forceps.2. :r! the oil on the surface of the lithium with filter paper.9. Place the lithium slowl! onto the water surface in a water trough.

. hen the reactions stop, test the solution produced with red litmus paper.;. ecord the obseration on the table.

@. epeat steps 1=; using sodium and potassium to replace lithium one b!one.

f) Tabulation of data>

5l'ali -etals 7bseration

Iithium

odium

Potassium