- Grade 10 paper 2 (2)

Chemistry 2010 Paper 2 2 hours & 30 Minutes  Name________________________________  Name_______________________________ _

Grade__________________ 

READ TE !"##"$%NG D%RECT%"N CARE!'##( 1) This paper *onsist *onsistss o+ t,o -2. se*tions se*tions A and /) Ans,er Ans,er A## A## uestions uestions in ea*h se*tion) se*tion)

ECT%"N A  33 Mars 1 a) The +oo,in4 +o, *hart sho,s the steps in the e5tra*tion o+ su*rose +rom su4ar *ane) tep 1

tep 2

Crushin4 and Miin4

-i. -i.

!itration

tep 3

tep 6

Pre*ipitation

Cari+i*ation usin4 saed ime

tep 7 ;a*uum Distiation or E:aporation

/ri /rie+y e+y out outine ine ,ha ,hatt happ happen enss in step step 1  _____________________________________________________  _________________________ _______________________________________________  ___________________   _____________________________________________________  _________________________ _______________________________________________  ___________________   _____________________________________________________  _________________________ _______________________________________________  ___________________  -2 mars.

-ii. -ii.

Dis* Dis*us usss the the pro pro*e *ess sses es ,hi ,hi*h *h tae tae pa* pa*ee in steps steps 28 6 and and 7 a9o: a9o:e) e) tep 2  _____________________________________________________  _________________________ _______________________________________________  ___________________   _____________________________________________________  _________________________ _______________________________________________  ___________________   _____________________________________________________  _________________________ _______________________________________________  ___________________   _____________________________________________________  _________________________ _______________________________________________  ___________________  tep 6  _____________________________________________________  _________________________ _______________________________________________  ___________________   _____________________________________________________  _________________________ _______________________________________________  ___________________   _ 

tep 7  ________________________________________________________________________   ________________________________________________________________________   ________________________________________________________________________   ________________________________________________________________________  -< mars. Tota = mars

2) De+ine the term isotope and 4i:e t,o e5ampes)  ________________________________________________________________________   ________________________________________________________________________   ________________________________________________________________________   ________________________________________________________________________  -6. a) tate t,o uses o+ isotopes)  __________________________________________________________________   __________________________________________________________________  -2.  9) Athou4h there are more than one thousand isotopes8 ony a9out one hundred and nine eements e5ist) Gi:e "NE reason +or this o9ser:ation)  __________________________________________________________________   __________________________________________________________________   __________________________________________________________________  -2. *) Naturay o**urrin4 si:er is a mi5ture o+ t,o isotopes8 6>A4 and 6>A4) o,e:er8 its reati:e atomi* mass is 10=) %n *ontrast8 athou4h naturay o**u rrin4 *ar9on is a mi5ture o+ t,o isotopes8