,上午八時牛至十時代,史(賦牲一
,作文]。
上午八時率至十一時,國文八台雅」對「A F朗者中华中
*月十一日,凡期四),
降間書上华东晤平举中山陵本。 [[西¥弁腩術畫嗎:指正中與。
時朋列下: 燈橫第三代硅小組,胥就地聽
六月十二日八星期五)
'上午十一降緩下午一野,脒卵龸試卷,
專會信立龍九
時間:上午九時华京十二時,
EFER). 上午八陆代十嗪率:一試
上华十一時選下午一時;英文「試仍
【
鹽
生異優覽展作遲 𨰘獎啻行舉期定
摩托筱八一
六月十五日〔星期[]=
上午八時平至十龔平:乙組八
ㄒ 六月十六日期) 試卷二:何及三冊)。 上午十一時至下午一時;乙組勁彤(
期上午九時半至十一時半, (四)中國花开营;正小學。時
阙。時間:上午九時半道十二時宁。 (DEFA CH
上午八時中深十時平;〔試瘸一著出去年約增爲二百二十一人,壓按职位均無帶到之作。幾
宇,卍超過三千一百二十八人,此項卿字,作品玆四千餘件, 宋年中文中學高中畢業發考之再生靈 H,
時間:上午九時一年。
“凍無概〕。
上午十一時至下午一時:珮(試卷
六月十七月八期Ju
至於考試科目,計有如下. ,則北有五十七邸。 - (2)-(#)
- CK). JAKERETEZ
上午八時來至十勝 財物類。
六月十八日八周期四)7 上午十一時至下午一時;歉。
十六路,〔÷12班深戲內分
| 六月十九日八瑾);,
» >€ 一上午八尚街至中距卒:通常一
-栻卷二: 近烨何乃區糖分》。
不符少過百何之二十五(瘫)
李景鈴女士獎助學金
下學期發放完竣
肶蛾躞
但墨校就讀 共九人獲得 分在中學以上
假否港大會学星行選 阿丽、孔秀梅、
過,六月二十八個喜楹臻、林文芳、歌
「元,黑半'慶、心、
(訊)紀念中尞鈴女獎助形魚,下樂團於上月後放宅 甄,它都撥作號琳敦 縣兆、图嫇文、陳洪
一批會工作,政府英文特別班。
,京资困難, 在中文大學坐基書院修習理科者:內搭棹,物理
一,二二年,鄭保羅男女中學;邢術宗,一年,依利沙伯中础;精湯
優岛,家境困難,現在各校修習大学对科預科班課區營;馬政駡調性有正規标鮮甜, 對待,與淑芳、阿
私立中校協會定廿八日
出版等方面進行
舉行慈善換物會
循徽文、演講、討論、廣播
籌敎師福利基金
.另通過推行整肅阿飛運動 將
秋立中空協會,昨日1店召鄰纏貉致作得和小組本上位,分由, 待食,報告此風葉會榮。
昭永街
九六四年度
文中學會考試題預習專欄
華僑日報英中會考試題研究委員會主編
化學
(十四)
(continued-from-the-thirteenth-18eue)
Question 28.
Define the following:
(a
Atomic weight of an element,
6
。
Valency. of an element,
Equivalent weight of an element.
(d) Molecular weight of an element or a com- -
pound.
Answer.
How are (a}, {b) and (c) related to one
another by one single equation?
the
(a) The atomic weight or an element 18
ber of times one atom of an element is as heavy as one atom of hydrogen. (b) The equivalent weight of an element'is the number of grams of the element that will com- bine with or displace one gram of hydrogen. (c) The valency of an element is the number of
hydrogen atoma which will combine with atom of the element in question. (d) The molecular weight of an element
pound is the number of time s
or con- one molecule of it is as heavy as one atom of hydrogen.
Atomic weight = Equivalent weight x
Valencv.
Question 29.
(a) State four important points under:the
Ionic Theory,
one.
(b) In the electrolysis or water acidified
with sulphuric acid and between platinum electrodes, explain what happens in the solution before the passage of any electrio current and then describe the electrode reactions taking place, after the electric circuit is closed.
Answer.
(a)
1/ The tona or metals ang ammonium and hv- drogen ions always have positive charges; while those of non-metals and acid radicals all carry negative charges.
ra-
i1/The number of units of cnarges.on is the same
any don as the valency of the dical from which the ion is formed,
atom or iii. An ion and an atom of the same element are quite different. The atom of an element is neutral, while the ion is electrically charged. Negatively charged ions are formed when an atom gains electrons; pósitively charged ions are formed when an atom loses electrons, chemical properties of an ion are quite dif-
The ferent from those of an atom. Thus atoms sodium attack water vigorously, but when sodium chloride is dissolved in water, sodium ions formed and have no reaction with water.
of
iv/ Any electrolyte always produces positive and negative ions in equal numbers total posive charge is just balanced by the
that the total negative charge. A solution of any elec- trolyte is therefore neutral,
v/ Water itself is slightly ionised:
H20
ቀ
J H
and in a solution of
OHT
in the solution at random,
11/ After the electric circuit is closed, the
cations H will migrate around the cathode and immediately electrode reaction takes place as follows:
Htions are dischargedy h* + e = H and two H atomsfcombine to form Hg molecules, 2H = H2.
same time the anions, OH and
504
OH
the
will migrate around the anode and also
electrode process takes place as follows:
ion are first selective discharged,
OH T
OH
軒
ey and then four of these
+2H20.
neutral radicals recombine thus,
Question 30.
4OH =
(a) Explain the meaning of :each ̄of "the following
three terms: i/ Hardness of water, ii/ tem- porary hardness of water. iii/ permanent hardness of water.
(b) In softening hard water, what are the chief
objectionable elements or ions which have to be removed? Describe only briefly but with chemical equations four different methods for the removal of hardness from water. Also in- dicate in each case whether the method you have mentioned is suitable for temporary or per- manent hardness of water,
Answer.
(a) 1/ Hard water in the water which ddes.nos form a lather with soap.
,筷出、树立在三校鮮麻生擔任。(
ii/ Temporary hasburyusof water 18 the narɑnes1-1). which is caused by presence of bicarbonatel of calcium and magnesium and which can be rev moved by boiling alone,
ild/ Permanent hardness of water is the hard- ness caused by the presence of chlorides and sulphates of calcium and magnesium which can not be removed by boiling.
(b) The object and the whole process of sorten ing hard water consists of the removal of Ca and Mg ions, which are the most objectionable elements in hard water.
Methods of softening hard water are described briefly as follows:
Ca(HCOg)2 Caco g
+
+
i/ By boiling (for temporary hardness only)
CO2 H2O. 11. By the addition of sodium carbonate (for
both types of hardness)
Na2CO3 + Ca(HCO3)2 CaCO + 2NaHCO3
Na2CO3
+
caso 4.
-
CaCO
+
NOSU
$li/ By the addition of calculated amount of milk of lime or lime water. This is called Clark's process and is for temporary hard- ness only.
Ca(HCOg)2
+
向
Ca(OH)2
+ 2420 iv/dy Permutit Process, which is generally known as the base-exchange method. In this process the sodium contained in the Permutit
and Ma readily exchanges for the Ca
Nazze Na 220
are
an electrolyte in ́water, hydrogen and hydroxyl ions are always present as well as the ions derived from the electrolyte itself. This fact has an Lmportant bearing on . the results of electrolysis, Water is a very weak electrolyte, i.e., very few water molecules split up into ions, but the number ions present is always maintained, for if any of these Hand OH ions axe removed more water molecules split up-to provide more.iens.
(b) ̄i/ In the solution before the passage, any
electric ourren:
H2SO
-
+
504
H20
The three : ions, H, OH”and.S0
H*
+ OH T
are moving
+
+ Ca(HCO3)2 Caza 咖 2NAHCOg
Na2SO4
CaSO4
Caze
ions.
The chemiçal name for Permutit is Zeolite, which consists of hydrated sodium aluminiums silicate.)
The Permutit process is good for both tom- porary and permanent hardness.
Question 31.
Give in the form of a general statement the re- sult of each of the following changes:
(a) The action of dilute acids on carbonates
and bicarbonates.
。
b The heating of carbonates of heavy metals.
The heating of carbonates of alkali metals. The heating of ammonium carbonate.
日 the heating of bioarbonates of any metals.
(f) Passing carbon dioxide into a soluble
hydroxide of a metal.
(g) Passing carbon dioxide into solutions or aqueous suspensions of the carbonates of the metala.
Answer.
a) c Carbon dioxide is always given off.
(b) Carbon dioxide is gdven off and oxide af
the metal is formed.
{3}
There is no change.
Ammonia, ¿çarbon dioxias and watertare... formed.
本年度中文中學高中畢業會考
六月九日開始
程專
程至六月廿三日結束 專門科目則於五月十九日起考 全部試
本年度中學入學試
澤貼學校。 避微,但成假檢索 血,並有資格 九六三年畢業。抵在職宮師預得文 六人,全部均在一九六「年入學,一 選新界區八十一人,九朗區一百七十
·時由何雅斯校無及夫人網 畢業無古 湖耱班,定明(十八)日下午六時, 是極熊共二百五十七入,預
一街新社)九林及新界在職激師
|九龍新界師訓班
共二百五十七人 明日舉行畢業禮
「國,則兩月十九日起,至五月二十二 淋,於竹南邻已正式決定在六月昨日起二)。 行,至六月二十三日止,至於門科目考 六日(原期三) 上午十一時至下午一時中,照(第一期)及主要
評卷人員已指定
二:
於五月十八,深、紅沙發、
大月九日(吊视二): 「替時間表,昨開發安可署宣佈如下: 1. 本年巾次中部高中報究會將之正式麥 日〔期四)下午小降品在按門,元一性寺、西南、
純校學生角置 任:文及英文兩科 算術科則由三師 由官立、津貼及補助學校選派教師担
料外,所有北科一郎在指定银行
上午八時平至十一時,闖女六號1。
八時關心本年四野中武,已定於下月六日舉行。本港教育司
六月十日八期三), 【上午十一癖华系下午一時半,公民。 艾琛中學+ 院,
钥激鮡 •香汧考中集中在金殿大方 帶升驗委員會,只隔帝官立、補動、灣貼小學,要准各校
試卷,由上冰斧類昞校洌師德化,至於算術和融離,
「升中指南」英文科教材
今日在麗的呼聲播出
時間:
上午十時半
下午六時正
ENGLISH LESSON*46
TEST 2 PART L
1) A word has been missed on at X. Write the word in the sumas)
a. Please wait X me outside the gate.
b. She was afraid X rate..
e. Everyone was present X Tom.
d. No one agres X him.
e. The money was shared X. Tazu jam and foras
Changa all the Mastalings into Feminines.
a. My brother and my uncle are going to my grandfathe")}) Pronunta
b. The headmaster praised the tag for his success!
a. The boy scout belged the poor man to get UD
d. That gentleman was the master of the house.
e. The son of a ling is a prince,’
3) have, has, are, is, ought, must, could, can,
One of these words should go where there is a number ♬ Write mus Konffie
word on the right, Usa each word once only
a. She (1) play basketball when she was youngja
b. I (2) made up. my mind to go.
c. He (3) looking for his younger brothars
d. You (4) go home at one..
e. 1 (5) lend you only five dollars.
4) Complete the short answers to the questions,
日。
For example; is he waiting?
Are you learning Englisht
b. Were they presenti
c. Is she a pretty girl?
d. You go to church, don't you?
o. You don't see him, do you?
(19)
€21
(3)
(4)
(5).
Tue"hou.
Y-----
Yesur N
5) Choose one word from the list on the left and putlit.after the word ærvenon,
the right-
Example: nall
Station
juice
shnes
ol
keeper
Anger.han
■," baskat-
BLADETROIT PLANE
b zebra-
SLAVA VANADA
霞学
ATP
shop
d, traffic-
epolice 一
26. One of these words or phrases can be used where there is a number;
Whis the word in the space.
prianos, nurse, tools, worse, doctor, fruits, medicine, leg, sorry," better grateful, flowers, heat, cold, unhappy, beanng, milk, tongue
John was . His mother sent for the (1). The doctor came after an hour He looked at John end felt his heart (2) He asked him to put out
his (3) and looked at it. He said, "It is nothing serious. He has caught u (4). Here is some (5) for him. Drink it and rest for a day or
Ho will be well
two
After two days, Jorn was getting (6). His (7) Tom, Mary and Peter came to see him after school. They brought with them (8) and (9). John was very (10) for their visit.
(1)
(5)
疯
(2)
(2)..
(3)
(8).
Complute the word on the right. The first letter is already put in. Example: A person who comes to see you.
(4)......
(5).. (9)............... (10)..
VISITOR
a. Ono who asks for food or MONDY,
B
b. A place where water is collected and stored.
B.......
c. A place where clothes are wasited,
d. The side of the road for foot-passengere.
P
e. The top of the mountain.
p
POONA FRAMI ŞADIR
Carbon dioxide is given off.
Carbonate of the metal is formed.
Bicarbonates of the metals are formed,
Rewrite the sentences correcting the mistakŁK
I get up vey carly yesterday morning and go to school eatif.
b. Elizabeth have two brothers and three sister.
e. Do your mother likes to drink milk.
d. John is taller than me, but Geargs is taller than him.
... Beah of the girls este oranes