8/17/2019 Scheme Quiz Klon Set 2

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KOLEJ MATRIKULASI SELANGOR 

SESSION 2015/2016 SEMESTER 1

SK016 CHEMISTRY

QUIZ 1.0 : MATTER (SCHEME SET 2)

NAME :MARKS : / 15 = !RACTICUM :

"ATE :

“ There is no secret to success.It is the result of preparation,hard work,learning

from failure.” 

Colin Powell

O#$%&'% Q*%+',-+: 5 +3

1. Which two of the ions below have the same number of electrons?(-+:A)

, , , ,

a. and

 b. and

c. and

d. and

e. and

2. Two isotopes of a given element will have the same number of ____, but a different number of ____ in

their nucleus. protons, electrons  &. 4,',-+ -%*',-+

electrons, protons d. neutrons, protons

3. Silver has two stable isotopes with masses of 1!."#" amu and 1$."%& amu. The average molar mass

of silver is 1&.$!$ amu. What is the percent abundance of each isotope?

#.' (g)1& and #.' (g)1" c. ##.%' (g)1& and %%.!' (g)1"

#. 51. A78109 - ;.2 A7810

8/17/2019 Scheme Quiz Klon Set 2

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!ART ANS?ER SCHEME MARKS

14a5 6eduction7 r  2&2)  8 1%8 8 !e ) 9 2r 38  8 &2

-idation7 !:e28  9 !:e38 8 !e )

verall7 r 2&2)  8 1%8 9 2r 38  8 !:e38 8 &2

1

1

1

4b54i5

n(l ;

; 1.2#" mol (l 4available5

1

nl2 ;

; .#%" mol l2 4available5 1

2 mol (l < 3 mol l2

1.2#" mol (l < 1.2#" - 3/2 =

  ; 1.$$" mol l2 needed 1

l2 is the limiting reactant 1

4b54ii5 3 mol l2  < 2 mol (ll3

.#%" mol l2 < .#%" - 2/3

  ; .3!! mol (ll3 1

ass of (ll3 ; .3!! - 133.#

  ; ;.6 7

1

1

“ There is no secret to success.It is the result of preparation,hard work,learning

from failure.” 

Colin Powell

8/17/2019 Scheme Quiz Klon Set 2

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1

“ There is no secret to success.It is the result of preparation,hard work,learning

from failure.” 

Colin Powell