7/26/2019 Quiz 7 SM1 Chemistry Xin

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CHONG HWA INDEPENDENT HIGH SCHOOL

CHEMISTRY

SENIOR MIDDLE LEVEL 1 (XIN / PING)

=QUIZ 7=

(Cha!"# $ Ch"%&'a *+,-)

T&%". 0 %&+!"-

ESSAY QUESTIONS

1. Table below shows the proton number of the elements U, V, W and X

Element U V W X

Proton Number 1 6 17 19

a! "ased on the table, #hoose two elements that form a #ompound w$th h&2h

melt$n% po$nt and bo$l$n% po$nt. E&pla$n how the #ompound $s formed and

draw the ele#tron arran%ement. '( mar)s*

b! "ased on the table, #hoose two elements that form a #ompound w$th *3

melt$n% po$nt and bo$l$n% po$nt. E&pla$n how the #ompound $s formed and

draw the ele#tron arran%ement. '( mar)s*

#! E&pla$n the d$fferen#e $n ph+s$#al propert$es for both #ompound a! and b!

other than melt$n% po$nt and bo$l$n% po$nts. ' mar)s*