Download - Question No 10

8/9/2019 Question No 10

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Section C

Q10 : PLANNING EXPERIMENT

QUESTION 1

Study the following statement:

You are given a convex lens, candle and white screen and other apparatus.

Based on the statement above:

(a) Suggest one hypothesis to investigate the statement. [1 mark

(b) !es"ribe one e#periment to test your hypothesis in 1$ (a) based on

the following "riteria: (i) %im of variables [1 mark

(ii) &dentifi"ation of variables [' marks

(iii) ist of apparatus and materials [1 mark (iv) ro"edure or method [* marks

(v) +abulation of data [1 mark

QUESTION 2


You are given a convex lens, candle and white screen and other apparatus.




the following "riteria: (i) %im of variables [1 mark (ii) &dentifi"ation of variables [' marks

(iii) ist of apparatus and materials [1 mark

(iv) ro"edure or method [* marks (v) +abulation of data [1 mark

1

Different distances of an o!ect produce different focal len"th of convex lens.

Different distances of an o!ect produce different si#e of i$a"e of convex lens.


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Section C


QUESTION %


You are given a thin convex lens, thic& convex lens and white screen and other

apparatus'




the following "riteria:

(i) %im of variables [1 mark (ii) &dentifi"ation of variables [' marks



QUESTION (


You are given 2) $l of h*drochloric acid, 2) $l distilled water, "alvano$eter, copper

plate and lead plate and other apparatus'







'

The thin convex lens has lon"er focal len"th than thic& convex lens'

+cid solution can conduct $ore electricit* than distilled water'


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Section C


QUESTION


(a) Suggest a hypothesis to investigate the above statement. [1 mark

(b) ,sing an a$$eter, two atteries, copper plate, iron nail, copper

-II. sulphate solution, alu$iniu$ sulphate solution and other

apparatus- des"ribe an e#periment to test your hypothesis in 1$ (a) based

on the following "riteria:




QUESTION /


(a) Suggest a hypothesis to investigate the above statement. [1 mark

(b) ,sing an a$$eter, two atteries, caron electrodes and lead -II.ro$ide and other apparatus- des"ribe an e#periment to test your

hypothesis in 1$ (a) based on the following "riteria: (i) %im of variables [1 mark

(ii) &dentifi"ation of variables [' marks (iii) ist of apparatus and materials [1 mark (iv) ro"edure or method [* marks


Electroplatin" process of an iron nail in 0opper -II. sulphate solution etter than in

+lu$iniu$ sulphate solution'

ead -II. ro$ide can conduct electricit* in the $olten state'


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Section C


QUESTION


You are given alu$iniu$ powder, #inc powder, copper powder and potassiu$

$an"anate -I3. and other apparatus'








QUESTION 4


You are given 5a"nesiu$, ead, 6eru$ , 2) $l h*drochloric acid, urett and other

apparatus'







*

Different $etals show different reactivit* with ox*"en'

5a"nesiu$ produced hi"her volu$e of h*dro"en than ead and 6eru$ when react

in acid solution'


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Section C


QUESTION 7


You are given 5a"nesiu$, ead, 6eru$ , 2) $l h*drochloric acid, urett and other

apparatus'



(b) !es"ribe one e#periment to test your hypothesis in 1$ (a) based onthe following "riteria:

(i) %im of variables [1 mark

(ii) &dentifi"ation of variables [' marks (iii) ist of apparatus and materials [1 mark

(iv) ro"edure or method [* marks


QUESTION 1)


You are given 0oarse Salt -i" si#e., 6ine Salt -s$all si#e. and distilled water .







/

Exother$ic reaction involved the increases of surroundin" te$perature andendother$ic reaction involved the decreases of surroundin" te$perature'

Different si#e of sustances ta&e different ti$e to dissolves in distilled water '


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Section C


QUESTION 11


You are given salt, distilled water and ther$o$eter'Based on the statement above:







QUESTION 12


You are given distilled water, stop watch , unsen urner and other apparatus.Based on the statement above:







0

The i$purities can increase the oilin" point of distilled water'

The oilin" point of distilled water is 1)) 80'


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Section C


QUESTION 1%


You are given ea&er 1)) $l, ea&er 2) $l, hot water 1))8 0 and other apparatus .



(b) !es"ribe one e#periment to test your hypothesis in 1$ (a) based onthe following "riteria:

(i) %im of variables [1 mark

(ii) &dentifi"ation of variables [' marks (iii) ist of apparatus and materials [1 mark

(iv) ro"edure or method [* marks


QUESTION 1(


You are given pin hole ca$era, candle and other apparatus.Based on the statement above:





(iii) ist of apparatus and materials [1 mark (iv) ro"edure or method [* marks (v) +abulation of data [1 mark

The lar"er the surface area has the hi"her rate of coolin" of hot water'

Different o!ect distance produced different characteristics of i$a"e'


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Section C


QUESTION 1


You are given ron#e loc&, tin loc&, copper loc& and steel all and other

apparatus.Based on the statement above:







2

+llo* $ore hardness than pure $etal