9 properties of matter

8/19/2019 9 Properties of Matter

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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS | Methodist HighSchoo

C!"#$idge Chec%&oi't SCIENCE (Bioog)* | +!ge1 o, 16

WORKSHEET CHAPTER 9 : PROPERTIES OF MATTER AND MATERIALS

-./ 0hich "!te$i! is !' !o) th!t co't!i's ! 'o'1"et!ic ee"e't2

A. B$!ss A's3e$B. H!e"!titeC. M!'g!'eseD. Stee

-.4 The #odies o, !i$c$!,t !$e o,te' "!de 5si'g !5"i'i5". 0hich t3o &$o&e$ties o,

!5"i'i5" "!%e it s5it!#e ,o$ this &5$&ose2

&$o&e$t) / &$o&e$t) 4

A good co'd5cto$ o,eect$icit)

good co'd5cto$ o,he!t

B good co'd5cto$ o,eect$icit)

st$o'g

C good co'd5cto$ o, he!t o3 de'sit)

D st$o'g o3 de'sit)

-.6 The &ie1ch!$t sho3s the co"&ositio' o, !i$.0h!t !$e the g!ses i' &!$ts /7 4 !'d 6 o, the &ie1ch!$t2

-.8 Eight s5#st!'ces !$e isted #eo3. Choose )o5$ !'s3e$s ,$o" this ist.M!g'esi5" s5&h!te o9)ge' i$o' c!ci5" c!$#o'!te

S5&h5$ c!ci5" "!g'esi5" 3!te$

0hich th$ee o, the s5#st!'ces !$e "et!s2A's

:::::::::::::::::::::::::::::::::::::::::::::::::::..

-.; The

Ro

No.

M!$%s

>


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-.? 0hich t3o ee"e'ts ,o$" !' !o) 3he' the) !$e he!ted togethe$2A cho$i'e !'d h)d$oge'B cho$i'e !'d @i'c A's3e$C co&&e$ !'d h)d$oge'

D co&&e$ !'d @i'c

-. Mid stee is !' !o) o, i$o' !'d c!$#o'.Ho3 does the c!$#o' !ect the &$o&e$ties o, "id stee2

A The c!$#o' "!%es the !o) ! #ette$ co'd5cto$ o, eect$icit) th!' i$o'.B The c!$#o' "!%es the !o) h!$de$ th!' the i$o'. A's3e$C The c!$#o' "!%es the !o) so,te$ th!' the i$o'.D The c!$#o' sto&s the i$o' $5sti'g.

-. 0hich &$o&e$t) do ! "et!s h!e2

A Thei$ de'sities !$e o3. A's3e$B Thei$ "eti'g &oi'ts !$e high.C The) !ct !s c!t!)sts.D The) co'd5ct eect$icit).

-. Co&&e$7 i$o' !'d @i'c !$e ! 5sed to "!%e thi'gs.0hich o, these th$ee "et!s !$e !so 5sed i' the ,o$" o, !o)s2

A's3e$

-./ St!i'ess stee is 5sed to "!%e c5te$). A5"i'i5" is 5sed to "!%e ,ood co't!i'e$s.0hich &$o&e$t) do #oth "et!s h!e th!t "!%es the" s5it!#e ,o$ these 5ses2A The) !$e good co'd5cto$s o, eect$icit). A's3e$B The) !$e good co'd5cto$s o, he!t.C The) !$e $esist!'t to co$$osio'.D The) !$e e$) st$o'g.

-.// I, stee ! "et! is h!$d !'d g$!'ite ! 'o'"et! is h!$d7 3h) do'=t 3e "!%e!5to"o#ie e'gi'es o5t o, g$!'ite2

A's.::::::::::::::::::::::::::::::::::::::::::

::::::::::::::::::::::::::::::::::::::::::

::::::::::::::::::::::::::::::::::::::::::

::::::::::::::::::::::::::::::::::::::::::

-./4 Choose ,$o" the ,oo3i'g ist o, s5#st!'ces to !'s3e$ the 5estio's #eo3.B$o"i'e cho$i'e i$o' "e$c5$) sodi5" cho$ide s5&h5$N!"e ! s5#st!'ce 3hich is>

i ! g!s !t $oo" te"&e$!t5$e. ...................................................................ii ! 'o'1"et!ic i5id !t $oo" te"&e$!t5$e. ..........................................iii ! co"&o5'd 3hich is ! soid !t $oo" te"&e$!t5$e. .............................

-./6 Tic% the co$$ect !'s3e$>

Ee"e't A B

Li5id "et! Me$c5$) Nic%eD5 "et! M!'g!'ese M!g'esi5"No'1"et! #5t co'd5cto$ o,eect$icit)

C!$#o' Co&&e$


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ANSWERS

-./ 0hich "!te$i! is !' !o) th!t co't!i's ! 'o'1"et!ic ee"e't2

A. B$!ss A's3e$B. H!e"!titeC. M!'g!'eseD. Stee

-.4 The #odies o, !i$c$!,t !$e o,te' "!de 5si'g !5"i'i5". 0hich t3o &$o&e$ties o,

!5"i'i5" "!%e it s5it!#e ,o$ this &5$&ose2

&$o&e$t) / &$o&e$t) 4

A good co'd5cto$ o,eect$icit)

good co'd5cto$ o,he!t

Bgood co'd5cto$ o,eect$icit)

st$o'g

C good co'd5cto$ o, he!t o3 de'sit)

D strong lo !"ns#t$

-.6 The &ie1ch!$t sho3s the co"&ositio' o, !i$.0h!t !$e the g!ses i' &!$ts /7 4 !'d 6 o, the &ie1ch!$t2

Ans"r: %

-.8 Eight s5#st!'ces !$e isted #eo3. Choose )o5$ !'s3e$s ,$o" this ist.M!g'esi5" s5&h!te o9)ge' #ron c!ci5" c!$#o'!te

S5&h5$ &'l() )'gn"s#() 3!te$0hich th$ee o, the s5#st!'ces !$e "et!s2

-.; The


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C!"#$idge Chec%&oi't SCIENCE (Bioog)* | +!ge/ o, 16

-. Mid stee is !' !o) o, i$o' !'d c!$#o'.Ho3 does the c!$#o' !ect the &$o&e$ties o, "id stee2

A The c!$#o' "!%es the !o) ! #ette$ co'd5cto$ o, eect$icit) th!' i$o'.% T," &'r-on )'0"s t," 'llo$ ,'r!"r t,'n t," #ron A's3e$

C The c!$#o' "!%es the !o) so,te$ th!' the i$o'.D The c!$#o' sto&s the i$o' $5sti'g.

-. 0hich &$o&e$t) do ! "et!s h!e2A Thei$ de'sities !$e o3. A's3e$B Thei$ "eti'g &oi'ts !$e high.C The) !ct !s c!t!)sts.D T,"$ &on!(&t "l"&tr#t$

-. Co&&e$7 i$o' !'d @i'c !$e ! 5sed to "!%e thi'gs.0hich o, these th$ee "et!s !$e !so 5sed i' the ,o$" o, !o)s2

A's3e$

-./ St!i'ess stee is 5sed to "!%e c5te$). A5"i'i5" is 5sed to "!%e ,ood co't!i'e$s.

0hich &$o&e$t) do #oth "et!s h!e th!t "!%es the" s5it!#e ,o$ these 5ses2A The) !$e good co'd5cto$s o, eect$icit). A's3e$B The) !$e good co'd5cto$s o, he!t.C T,"$ 'r" r"s#st'nt to &orros#onD The) !$e e$) st$o'g.

-.// I, stee ! "et! is h!$d !'d g$!'ite ! 'o'"et! is h!$d7 3h) do'=t 3e "!%e!5to"o#ie e'gi'es o5t o, g$!'ite2

A's.Alt,o(g, t," +ro+"rt$ o ,'r!n"ss4 #s s#)#l'r or st""l 'n! gr'n#t"5 ot,"r

+ro+"rt#"s 'r"nt 's !"s#r'-l" or )'n('&t(r#ng '(to)o-#l" "ng#n"s For

"7')+l"5 t," lo ,"'t &on!(&t#on o ro&0s )'0" t,") "7+lo!" (n!"r ,#g,

t")+"r't(r" T,"$ 'r" 'lso -r#ttl"5 )'0#ng t,") +oor or (s" #n "ng#n"

-lo&0s

-./4 Choose ,$o" the ,oo3i'g ist o, s5#st!'ces to !'s3e$ the 5estio's #eo3.B$o"i'e cho$i'e i$o' "e$c5$) sodi5" cho$ide s5&h5$N!"e ! s5#st!'ce 3hich is>i ! g!s !t $oo" te"&e$!t5$e. >ANS. C,lor#n" 8-ro)#n" 'n! )"r&(r$ 'r" -ot, l#(#!s 't roo) t")+"r't(r"-(t )"r&(r$ #s ' )"t'l

ii ! 'o'1"et!ic i5id !t $oo" te"&e$!t5$e. >ANS. %ro)#n"

iii ! co"&o5'd 3hich is ! soid !t $oo" te"&e$!t5$e>ANS. So!#() C,lor#!" 8#n '&t #t #s t," onl$ &o)+o(n!; 'll t," ot,"rs 'r""l")"nts

-./6 Tic% the co$$ect !'s3e$>

Ee"e't A BLi5id "et! M"r&(r$ Nic%eD5 "et! M!'g!'ese M'gn"s#()

No'1"et! #5t co'd5cto$ o,eect$icit) C'r-on Co&&e$

B

D

A

C


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C!"#$idge Chec%&oi't SCIENCE (Bioog)* | +!ge


6/16



(/*# 0hich o'e o, the "odes A to E $e&$ese'ts ! soid co't!i'i'g di!to"ic "oec5es2(/*c 0hich t3o o, the "odes A to E $e&$ese't g!ses2

!'d (/*d i 0hich o'e o, the "odes A to E $e&$ese'ts di!"o'd2(/*ii St!te the '!"e o, the ee"e't &$ese't i' di!"o'd.(/*iii St!te ! 5se o, di!"o'd othe$ th!' i' e3ee$).(/*e St$5ct5$e E is ! "et!. St!te th$ee &h)sic! &$o&e$ties 3hich !$e ch!$!cte$istic o, !"et!s.(6*, Met!s !$e so"eti"es "i9ed 3ith othe$ ee"e'ts i' o$de$ to ch!'ge thei$ &$o&e$ties.i 0h!t is the '!"e gie' to ! "i9t5$e o, "et!s 3ith othe$ ee"e'ts2

(/*ii M!tch 5& the "et!s i' the #o9es o' the e,t 3ith thei$ 5ses o' the $ight. The K$sto'e h!s #ee' do'e ,o$ )o5.

/ ! S5#st!'ce co't!i'i'g o') / t)&e o, !to"s5#st!'ce 3hich c!''ot #e #$o%e' do3' to!')othe$ s5#st!'ce #) che"ic! "e!'s (/*# B (/*

c A D #oth 'eeded (/*d i C (/*ii c!$#o' (/*iii d$i #its ,o$ c5tti'g O0TTE (/*e A') 6 o,>co'd5cts he!tco'd5cts eect$icit)"!e!#ed5ctieso'o$o5sshi')NOT> sie$)high "eti'g OR #oii'g &oi'ts (6*, i !o)s (/*ii "id stee c!$ #odiesPst!i'ess stee che"ic! &!'tP!5"i'i5" !i$c$!,t ALLO0 c!$ #odiesPco&&e$ eect$ic! 3i$i'g

T3o i'dic!to$s7 #$o"o&he'o #5e !'d Co'go $ed7 sho3 the ,oo3i'g coo5$s i' !cidicso5tio's!'d i' !%!i'e so5tio's.

A ,e3 d$o&s o, e!ch i'dic!to$ !$e !dded to se&!$!te s!"&es o, ! so5tio' o, &H 4.0h!t !$e the coo5$s o, the i'dic!to$s i' this so5tio'2


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C!"#$idge Chec%&oi't SCIENCE (Bioog)* | +!ge= o, 16

D

0he' i"esto'e is he!ted e$) st$o'g) i' !i$7 i"e is "!de.0h!t is the ,o$"5! o, i"esto'e !'d o, i"e2

0hich st!te"e't desc$i#es ! test ,o$ c!$#o' dio9ide g!s2A It #e!ches d!"& it"5s &!&e$.B It $eights ! go3i'g s&i't.C It t5$'s co#!tII cho$ide &!&e$ &i'%.D It t5$'s i"e3!te$ co5d).

0hich 5ses o, the "et!s sho3' !$e #oth co$$ect2

D

S5&h5$ic !cid is ! st$o'g !cid7 eth!'oic !cid is ! 3e!% !cid.E9&!i' the die$e'ce #et3ee' ! st$o'g !cid !'d ! 3e!% !cid.A's s5&h5$ic !cid is co"&ete) io'ised o$ ,e3 "oec5es !'d "!') io'seth!'oic !cid is &!$ti!) io'ised o$ "!') "oec5es !'d ,e3 io's

0hich di!g$!" $e&$ese'ts the st$5ct5$e o, !' !o)2

D


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C!"#$idge Chec%&oi't SCIENCE (Bioog)* | +!ge> o, 16

St!i'ess stee is !' !o) o, i$o' !'d othe$ "et!s. It is st$o'g !'d does 'ot $5st #5t it costs"5ch"o$e th!' 'o$"! stee.0h!t is 'ot "!de ,$o" st!i'ess stee2

A c5te$)B &i&es i' ! che"ic! ,!cto$)C $!i3!) i'esD s!5ce&!'s

S5#st!'ce Q $e!cts 3ith sodi5" c!$#o'!te to ,o$" ! g!s. The g!s t5$'s i"e3!te$ co5d).0h!t is s5#st!'ce Q !'d 3hich &$ocess t!%es &!ce i' the $e!ctio'2

D

0hich '!"e is gie' to "i9t5$es o, "et!s2A !o)sB co"&o5'dsC o$esD s!ts

0hich co"&o5'd i' &o5ted !i$ c!' d!"!ge sto'e3o$% !'d %i t$ees2A c!$#o' dio9ideB c!$#o' "o'o9ideC e!d co"&o5'dsD s5,5$ dio9ide

Hydrogen is a gas at room temperature.Describe the arrangement and motion of the molecules in hydrogen gas.arrangement .....................................................................................................................motion .........................................................................................................................

!$$!'ge"e't> $!'do" ,!$ !&!$t"otio'> $!'do" ,!st i$$eg5!$

Some substances conduct electricity, others do not.(a) Which three of the following conduct electricity?Tick three boxes.

State the name gien to a substance, such as plastic, which does not conductelectricity.

/st7 6$d !'d 8th #o9es do3' tic%ed !5eo5s sodi5" cho$ide7 co&&e$ !'d g$!&hite (6*# i's5!to$

Gie ,o5$ &$o&e$ties th!t !$e ge'e$!) &$ese't i' "et!s.


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Metals generally have the following properties:

They are malleable (can be made into sheets)

They are ductile (can be made into wires)

They conduct electricity

They conduct heat and have low specific heat capacity

They are shiny

They react with acids and oygen

I, stee ! "et! is h!$d !'d g$!'ite ! 'o'"et! is h!$d7 3h) do'=t 3e "!%e !5to"o#ie

e'gi'es o5t o, g$!'ite2

Alt,o(g, t," +ro+"rt$ o ,'r!n"ss4 #s s#)#l'r or st""l 'n! gr'n#t"5 ot,"r

+ro+"rt#"s 'r"nt 's !"s#r'-l" or )'n('&t(r#ng '(to)o-#l" "ng#n"s For

"7')+l"5 t," lo ,"'t &on!(&t#on o ro&0s )'0" t,") "7+lo!" (n!"r ,#g,

t")+"r't(r" T,"$ 'r" 'lso -r#ttl"5 )'0#ng t,") +oor or (s" #n "ng#n"-lo&0s

Choose from the following list of substances to answer the questions below.-ro)#n"&,lor#n"#ron)"r&(r$so!#() &,lor#!"s(l+,(r

Name a substance which is

8# a gas at room temperature. ......................................................................................

8## a non-metallic liquid at room temperature. ...............................................................

8### a compound which is a solid at room temperature. ...................................................

!i" bromine and mercury are both li#uids at room temperature but mercury is a metal!iii" in fact it is the only compound$ all the others are elements

The o5tside o, the g!ss is 'o3 3et.0h!t is the $e!so' ,o$ this2 Tic% o'e #o9.0!te$ !&o5$ ,$o" the !i$ h!s co'de'sed o' the o5tside o, theg!ss.0!te$ h!s co'de'sed ,$o" i'side the g!ss !'d go'e i'to the !i$.0!te$ !&o5$ h!s e!&o$!ted ,$o" the !i$ !'d t5$'ed i'to ! i5id. The co! h!s e!&o$!ted !'d e,t 3!te$ o5tside the g!ss.

I' the 3!te$ c)ce7 3!te$ c!' #e ! soid7 i5id o$ g!s.

! Choose 3o$ds ,$o" the ist to co"&ete these se'te'ces.co'de'ses dissoes e!&o$!tes o!ts soidiKesS!t is dissoed i' se! 3!te$. 0he' the 3!te$,$o" the se!7 the s!t is e,t #ehi'd. (/*# N!"e the &$ocess th!t h!&&e's 3he' i5id 3!te$ ,o$"s i' co5ds.


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C!"#$idge Chec%&oi't SCIENCE (Bioog)* | +!ge 1? o, 16

! / e!&o$!tes# / co'de's!tio' Acce&t co'de'se o$ co'de'si'g.

+ie$$e he!ts so"e #!c% coee s3eete'ed 3ith s5g!$7 5si'g this !&&!$!t5s. The coee #ois.

A i5id coects i' the test t5#e st!'di'g i' the #e!%e$.0h!t is the '!"e o, the i5id2 Tic% # the co$$ect #o9.

0h) is the test t5#e th!t coects the i5id st!'di'g i' ! #e!%e$ o, cod3!te$2

! / 3!te$# / to "!%e the !&o5$ co'de'seAcce&t>to coo the !&o5$ g!s ste!"to "!%e the !&o5$ g!s ste!" t5$' i'to !i5id 3!te$

Slaked lime is used raise the pH of soil.

(a) What is the chemical name for slaked lime?

........................................................................................................................................................................ [1]

(b) The recommended amount to use is 12 ! per s"uare metre of soil.

Ho# much slaked lime #ould $ou need to appl$ to a rectan!ular !arden #hich measured 1% metres

b$ & metres?

(c) 'ess calcium oide than slaked lime is needed to treat the same !arden.

Wh$ #ould the !ardener prefer to use slaked lime?

........................................................................................................................................................................ [1]

(d) (i) Write an e"uation for the reaction of slaked lime #ith nitric acid.


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C!"#$idge Chec%&oi't SCIENCE (Bioog)* | +!ge 11 o, 16

(a) calcium h$droide

(b) & ; 1% ; 12

1% %%% !*1% k!

(c) calcium oide is corrosi+e*harms skin(d) (i) ,a(-H)2 2H/-0 % ,a(/-0) 2 2H2-

The pH of chemicals found around the home ma$ be tested usin! pH paper. Some t$pical results are

sho#n belo#.

(a) ns#er the follo#in! "uestions usin! the abo+e information.

(i) What is the pH of o+en cleaner?

........................................................................................................................................................................ [1](ii) Which is the most acidic solution?

........................................................................................................................................................................ [1]

(iii) What #ould be the pH of a neutral solution?

........................................................................................................................................................................ [1](b) ine!ar #as also tested usin! pH paper and found to ha+e a pH of 3.1. What colour did the pH

paper become?

........................................................................................................................................................................ [1]

(c) When a #asp stin!s someone its in4ects a li"uid in the person5s skin. n old fashioned remed$ for #aspstin!s is to rub +ine!ar on them.

(i) Su!!est the pH of the li"uid #hich #asps in4ect into the skin.

........................................................................................................................................................................ [1]

(ii) What name is !i+en to the reaction #hich happens bet#een this li"uid and the +ine!ar?........................................................................................................................................................................ [1]

(iii) /ame the colourless6 tasteless li"uid that is produced in this reaction.

...............................................................................................................................

(a) (i) 12 1

(ii) lemon 4uice 1

(iii) 7 1

(b) red or oran!e 1

(c) (i) accept an$ pH !reater than 7 up to 13 1

(ii) neutralisation 1

(iii) #ater

Some people suffer from acid indi!estion #hen their stomach produces ecess stomach acid. The label

on a household brand of indi!estion tablets sa$s that it contains ma!nesium carbonate.

(a) 8a!nesium carbonate is insoluble in #ater. When mied #ith #ater6 #hat colour #ould it turn

pH paper?

........................................................................................................................................................................ [1]

(b) The instructions on the packet su!!est that 1 or 2 tablets are che#ed as re"uired.

(i) What name is !i+en to the reaction #hich happens bet#een the ecess acid and the indi!estion tablet?

........................................................................................................................................................................ [1]

(ii) 9plain #h$ the instructions su!!est that the tablets are che#ed #hen taken.

.............................................................................................................................................................................

........................................................................................................................................................................ [2]

(c) The acid present in the stomach is called h$drochloric acid. H$drochloric acid6 H,l6 reacts #ithma!nesium carbonate6 8!,-06 to produce ma!nesium chloride6 carbon dioide and #ater.

(i) ,omplete and balance the e"uation for this reaction.

:::H,l (a") 8!,-0(s) 8!,l2 (a") ::: (!) H2- (l) [2](ii) 'ime#ater can be used to test for carbon dioide. What is the result of this test?

........................................................................................................................................................................ [1]

(iii) ;se these relati+e atomic masses< , 12= - 1>= 8! 23

to calculate the relati+e formula mass of ma!nesium carbonate.

...................................

(a) !reen 1

(b) (i) neutralisation 1

(ii) reaction is faster*increases rate of the reactionincreases surface area*more collisions bet#een particles 2

(c) (i) 2

,-2


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2

(ii) turns milk$*#hite*cloud$ 1

(iii) 23 12 (1> ; 0) 1

&3

(a) n an eperiment ammonia solution6 an alkali6 #as added to nitric acid.

(i) What is the name of apparatus ?........................................................................................................................................................................ [1]

(ii) What is the name of the reaction #hen the acid reacts #ith the alkali?

........................................................................................................................................................................ [1]

(iii) What is the pH #hen 4ust enou!h ammonia solution is added to react #ith all the nitric acid?

........................................................................................................................................................................ [1]

(b) (i) What is the ion #hich is present in an$ solution of acid?

........................................................................................................................................................................ [1]

(ii) What is the ion #hich is present in an$ solution of alkali?

........................................................................................................................................................................ [1](iii) Write the simplest ionic e"uation #hich represents the abo+e reaction.

........................................................................................................................................................................ [1]

(c) The follo#in! label is found on the bottle containin! the nitric acid.

(i) What does the label tell $ou about the nitric acid?........................................................................................................................................................................ [1]

(ii) Su!!est t#o precautions #hich should be taken #hen usin! the nitric acid in the eperiment.

1. .................................................................................................................................................................... [1]

2. .................................................................................................................................................................... [

(a) (i) burette

(ii) neutralisation

(iii) 7

(b) (i) h$dro!en ion*H(ii) h$droide ion*-H@

(iii) H -H@ H2-(c) (i) it is corrosi+e

(ii) an$ t#o from safet$ !o!!les

plastic !lo+es

#ear lab coat

use a tra$ to catch spilla!e

(a) Aelo# are the chemical formulae of four acids.

H,l H2S-3 H/-0 ,H0,--H

(i) What colour #ould the$ all turn a solution of litmus?

........................................................................................................................................................................ [1]

(ii) Write do#n the name of the ion present in solutions of all the acids......................................................................................................................................................................... [1]

(b) Aelo# are the chemical formulae of four alkalis. /a-H B-H 8!(-H)2 /H3-H

(i) What colour #ould the$ all turn a solution of litmus?


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........................................................................................................................................................................ [1]

(ii) Write do#n the name of the ion present in solutions of all the alkalis.

........................................................................................................................................................................ [1]

(c) solution of sulphuric acid can be used to neutralise a solution of sodium h$droide.

(i) What is the pH of the solution #hen it is eactl$ neutral?........................................................................................................................................................................ [1]

(ii) What is the name of the salt formed in the neutralisation reaction?........................................................................................................................................................................ [1]

(iii) Aalance the follo#in! s$mbol e"uation for the reaction.

H2

S-3 (a") :::: /a-H (a") /a2S-3 (a") :::: H2- (l) [2](d) When nitric acid neutralises ammonium h$droide the salt formed is called ammonium nitrate.

Ci+e one important use of ammonium nitrate.

........................................................................................................................................................................

(a) (i) red 1(ii) h$dro!en 1

(b) (i) blue*purple 1

(ii) h$droide ion 1

(c) (i) 7 1

(ii) sodium sulphate 1

(iii) 2/a-H2H2

- 2

(d) a fertiliDer

Aelo# is information about si chemicals.

;se the table to #rite the letter of the chemical substance #hich<

(a) forms the most stron!l$ acidic solution.

........................................................................................................................................................................ [1]

(b) forms a neutral solution.

........................................................................................................................................................................ [1](c) forms a solution #hich turns pH paper oran!e.

........................................................................................................................................................................ [1]

(d) is a metal ......................................................................................................................................................................... [1]

(e) is a carbonate.

........................................................................................................................................................................ [1]

(f) is #ater......................................................................................................................................................................... [1]

(!) is sulphur dioide.

........................................................................................................................................................................

(a) (b) A

(c) ,

(d) E

(e) F

(f) A

(!)

ntacid tablets are used to treat indi!estion6 #hich is caused b$ ecess acid in the stomach.

Fetails of four solids6 #hich are used to neutralise stomach acid6 are sho#n in the table belo#.


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C!"#$idge Chec%&oi't SCIENCE (Bioog)* | +!ge 1/ o, 16

(a) ,omplete the table. [0]

(b) ,omplete the e"uation for the reaction of ma!nesium h$droide #ith h$drochloric acid.

8!(-H) 2 2H,l && H2- [1](c) n eperiment #as carried out to find out ho# much acid #as needed to neutralise one !ram of

each of the solids. The solid #as put into a flask #ith #ater and an indicator6 then acid #as added.(i) Fescribe ho# $ou #ould find out the eact amount of acid needed.

.............................................................................................................................................................................

.............................................................................................................................................................................

........................................................................................................................................................................ [2]

(ii) Wh$ is it important to use the same concentration of acid each time?

........................................................................................................................................................................ [1]

(d) nother #a$ to compare the solids is to find out ho# much solid is needed to neutralise 2% cm0 of acid.

The results are sho#n belo#.

(i) ,alculate the costs of each solid used.

.............................................................................................................................................................................

...............................................................................................................................

(ii) ;se all the information !i+en to choose the best antacid.

Ci+e a reason for $our ans#er

(a) 8!,-0 1calcium carbonate fiDDes 2

(b) 8!,l2 1

(c) (i) add acid slo#l$* from a burette 1

until indicator chan!es colour 1

(ii) as a control* for a fair test 1

(d) (i) %.7 ; 1> 11.2 p 1

1.2 ; 11 10.2 p 1

%.> ; 7. 3. p 1

%.3 ; 22 &.& p 1

(ii) ma!nesium h$droide 1

cheapest 1

no !as !i+en off

Games spilt some acid on the floor. He looked at the possibilit$ of treatin! it #ith one of four chemicals. Their

properties are summarised in the table.

(a) (i) Wh$ #ould substance F be useless for the purpose?

........................................................................................................................................................................ [1]

(ii) Which other substance #ould $ou ad+ise him to a+oid? (Ci+e a reason)

.............................................................................................................................................................................

(iii) What t$pe of substance is A?

........................................................................................................................................................................ [1]

(b) Sodium chloride is probabl$ the best kno#n salt. t is used in the food industr$6 spread on roads in

#inter and used to make a ran!e of other chemicals.(i) State t#o uses of sodium chloride in the food industr$.

.............................................................................................................................................................................

........................................................................................................................................................................ [2]

(ii) /ame t#o other chemicals made from sodium chloride.

.............................................................................................................................................................................

........................................................................................................................................................................ [2]

(iii) Wh$ is sodium chloride spread on #inter roads?...............................................................................................................................

(a) (i) does not react #ith acid 1

(ii) substance 1+er$ hi!h pH dan!erous 1

(iii) a carbonate 1

(b) (i) seasonin! 1


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C!"#$idge Chec%&oi't SCIENCE (Bioog)* | +!ge 1


16/16



(iii) ll acids contain ::::::::. [1]

(i+) cids react #ith carbonates to produce :::::::: :::::::: !as. [1]

(+) The acid found in +ine!ar is called :::::::: ::::::::. [1]

(+i) cids are also found in ::::::::::. [1]

(+ii) n eample of an alkali is :::::::::. [1](+iii) Safet$ spectacles must be used #hen handlin! acids or alkalis6 because the$ are ::::::::.

(i) se+en*7 1

(ii) neutral* neutralised 1

(iii) h$dro!en* h$dro!en ions 1

(i+) carbon dioide 1

(+) ethanoic acid 1

(+i) lemons*car batteries*nettles etc 1

(+ii) sodium h$droide*potassium h$droide*ammonia etc 1

(+iii) corrosi+e

A's3e$ /> DA's3e$ 4> D

9 properties of matter

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