第二第强四第
日九十月三年巴乙周复
WAH KIU YAT PO
題預習專欄
(Pho+ 2HC1
一九六五金
化學科 (廿一)
王錦釗、
CHEMISTRY (2)
Question
(a). Put the piece of lead into an evaporating dish and add sufficiane) concentrated nitric acid to dissolve it completely,
Pb 4HNO. • Pыíno,), + 200 ̧ + 28 ̧2
The solution of lead nitrate 19 heated to armess, when crystals of lead nitrate are formed, On further heating, the lend citrate decomuses to form lead monoxide. At a high temperature the product j fuses to a brown liquid, which solidifles on cooling to a yellow- coloured solid, litrarze. If the temnerature is went sufficdent?v low to prevent melting, the product obtained is called massicot.
To ensure that all the nitrate has decomposed, it 13 hested until` the dish and 11s contents have a constant we isoma
I
2P DO +4NÓ 2 + 2
(b) Red lead is obtained as a red cowder by heating unfused lead mona- xide massicot) in a current of air for several hours at temperature or 470° - L80°C. The reaction is reversible and on strong heating the red lead reverts to the moroxide (11tharged from which ped lead cannot be reformed,
(B60 + 0 0
(e) Retior with concentrated hydrochloric acid.
When itharge is heated with-hydrochloric acid, a solution of lead
chloride will be formed, which will orvataldise out of the solution
on coolium as 30 18 insoluble in cold water,
【升中指南」英文科教材
今日在龍的呼聲播出
上午十時卅分至十一時
時間:下午六時至六時三十分
"LESSON 51
[TEST II
Choose tng correct fars of the
ver to the brackets and underline tt.
When red lead is heated with concentrated hydrochloric acid, chlorine id be evolved and on cooling the mixture, a white orecioltate of lead chloride is formed, u
氤
P60
+ CO ·
+4002
1
日十三月四年五六九一滕公年四平的
(a) The mixture of the two gases is bubbles through a strong solution
of caualie' potash which will absorb the carbon dioxide.
•
- 5200, + #20}
The car on morbiace coas not react with the caustic potash and wil Pass through. It is then collected over water.
(e) The mixture is put in a porcelain ocat which is then placed in a combustion tube. The boat 15 hestea strongly as a current of oxygen is passed over it. The carbon wall burn to form carbon dioxide, leaving the cupric oxide panind in the boat. The process is continued until the boat and its contents have a constant weight.
(d) When carbon monoxide is passed over heated litharge or red lead both oxides will be reduced to the metal,
When dilute hydrochloric acid is added to a solution of lead ni trate, double decomposition takes place, and a curdy, white precipitate. of lead chloride will be formed.
2HC# PelNO2
-
PbCl26 + 2HNO3
If the resultant mixture 19. diluted and boiled, the lead chloride will disappear and a clear colourless solution will be obtained, as lead chloride a soluble. In hot water.
When the clear solution is cooled under a lep, crystals of lead chloride will be formed. •
Question 2
(a) Put the mixture into a resort the neck of which enters a round- bottomed flask which is cooled by means of water from the tap, when the mixture in the retort is heated,aloric acid will, distil over and is collected in the round-bottomed flash. The acid is purified by redistillation and by blowing a current of dry air, or carbon dioxide, through the waris mitrie solda
商業電台|升中指導|
英文科第卅九課
̇播出日期第二台四月三十日下午五時半至六時
Lesson 39
=
QUESTIONS FOR BEXT WEEK,"
1. What volume of oxygen (calculated at N.T.P.) may be obtained by
nesting 4.9 gm, of potassium chlorate fairly strongly until
decomposition is completed? What would be the weight of the re->
怎锰好? How would the reaction be affected if some manganese
dioxide were previously mixed when the chlorate"
What would be evolved if a little concentrated sulphuric acid with res warmed with (a) the rest due after the chlorate alone had been decomposed, and (b) the residue after the mixture of chlorate and dioxide nad ceased to give oxygen?,
Give equations whersvogġibla.
2. what is an oxidising agent?
Describe two tests by which you could recognise s
substance in?
solution as an oxidising agent. Name Lwo Such Cale
How would you (a) oxidise nitric oxide to riure acid,
(b) oxias se hydrogen sulphide to gulstur,
師感
比煮
教育委員會報告上消息於本報透露,爲,教育委員之是5
某士後
The
們建爲
合(特價)。若以一般情况而內激摩上之需要,因他演矶之情形。本部航者
可以部分工作就更實是無實班級比率之一 我們就爲大革斜證至一個黏散。等之乃一些建相
削減教師與班級比率
將使教育質素受損害
對香港中、小學出席
之水要求實在很低
益點
言. 均屬有損無益 白皮書已同意一點一制 教師工作之
蛾否酒
·形由意啊
不成班克報對
新盤告
。使家独
人們望更 了之
一
性無得。
高建偶的是師樞的我的
珊照的惠
科
時予以揲行,惟若施行之綳成辦法,目前有關方面促未有進一步之透露。 者,字古稱為獲州政府之實闻,換言之,即各該項之鐵腳,將於本年九月新學明開始心教師澂北五維,高恩校的劃可教, 本報前首首先報道有調理紙吳致師之比率將予削技之消息,此項新作實現已無政御丽之前都寫著,由教育就員會的療器 以上去工作负担,世一席人數。在研究富案 師毎遇上無三十位上的辦法,用以计 官,則現行之中藥散 這公式函一行
府當局所接納。新創減而餘之比率爲,
中英文中各級
大學預料理
本型麻將
數憫喾育數
人工營目實數時小宜州發 吉作者的行之,學变之
安至革方騈主人另合等
超四班面碗郡士一?
社團殻線之街,
alá príze will begime,giving,game,given, ta the winner.}
buche out initie, lying,lay, leikinnder the table.
4)The\little child wasíknock,kaöcking, knock adjdow by a eur. try fond of kakangfields 2)P.11 ia **ch blank with nga nẽ she collowtag such
paper
wood rukbar
1740
14 The anvelope is made of
The Football je made at
- The window is made at
glass ailwar冫
The nail is made of
3)Complete the short anseriş ta the "gurations
auto Mr Chan ak hönnu
48boshup found her book"
each bránk
Fand pu
write "in penes): bus ALWAYS (nagar: ide address: inam, ha lutser
PD981%9-gender to the vore underlined
ENGLISH SYLLABUS
Candidates will be expected to understand and use English within the framework of the Vocabulary (see Appendix V). emphasis must be on the use of language, not on grammatical terns and dictionary definitions. The content of the syllabus
briefly described below:
II.
Domprehension: (Lesson 20, 21,)
Passages for comprehension will be set. Candidates will be expected to answer questions on these passages or to select the correct answer from given alternatives.-
The passages will fit into the framework of the syllabus, but commonly used words not in the listed vocabulary may be included if their meaning de clear from the context.
Sentence Structure:
Candidates will be expecteds ** (1) to use the structure
(a))) simple sentences
enses
elated to.
frect and indirect objects
at(Lesson 7); poeltive
their negatives(Lesson 7,8,9,); esent, past, future.
present, pasty.
esent with just, already, yet, and past;
(0) would, should; ought; must, may, night; can, could,
(Lesson 52)
the active and passive forms(Lesson 28, 29, 30,). commands and requests(Leason 32)
stione(Lesson 10);
cor sponding to the statement forms and tenses above and those listed in (1) (6)
aboves
(11) using interrogative; who? when? where? what? which? why? now? whose? how often? how many? how many times?;
join nentences using (Leeson 13, 14, 15, 16)、
but, either..or neither............nor;
who, whom, whose, vich, that:
clauses with fter, although, as, recause, before,
since, so that, until, when, whether,
why.
(II. Sentence Construction (Lesson 22,25):
Candidates may be asked to complete a paragraph by: filling in blanka to write sentences using give words, to compose connected sentences using key words or phrases and to write from a series of related pictures..
General:
Candidates may be tested upont
(1) the use of oapital Letters and punctuations the full atop, the comma, inverted commas, the guestion mark, the exolamation mark(Lesson 27, 26,)
(2) the use of told, said, asked, begged in.Indirect speech
(Lesson 33
(3) the use of personal. pronouns Including reflexives) : (4) the use of prevositions, adjectives, adverbs within
the vocabulary List (Lesson 2, 5, 6, 11, 12, 17, 35, (36)
(5) pronunciation, similar and opposite meanings, the selection
of words (Lesson 18, 19).
之前限制付於能以,師官簿:
存託及使学生笃負筩,
旣署友疑此每尙在此
· 賴在建然畢不能起大
教制
學教
兩師
面作
而之
昨黄
學勵
要烏來新術松 於
訪德演博
疫
中會通公英,取德星安有
•宜安院校下委宜用全
交
右起惠威廉、如太、郭朝亮君,及其
港區十九間小學
舉行遊戲比賽
·赴英國深造
之天魔融題,他日定,前程似飾、學成返 體㘰吳使津小姐登備時在機場音形。
港求深造,更得該校免試升寶,以鼻小说
陈小姐爲祈朱聖方濟各市州之高材生,在
【溜冰妙妈煨色比賽,本港學生所隔參加, 特 萬實雅金於月前森辦美國
李曉莊主持頒獎,
萬寳龍填色比賽揭曉
「大名十三歲之直插拔,本编莊氏及三名展
「宁,由学繞莊氏主持群类。 附圖由左起:首名十四俊之幽臧海, 能香港及送本热代理國莊費品有限公司
保良局主席超常伉筐頒獎 教育司懟爲場區小學 小军 北角官立上午小,讓· 東院道道水果小,
球星,由上午十時道,各科新生定五月一日開課
本校安倫教城市工商學院批准京合格前教教宗各科高学生
遠東航淼校招生
到生午學時由
方陶席四生年上學
秋、李大偉大人、装
描由陳希夫人
皇家長其宗,典禮由 亞東各校學生局曾有加 需致推許,並向奥
席致詞,陳氏对教育一
助理教育對獵京金。
單品
無際無麵有优睛。英至頓湘半分際於
報名,由即日起,本就:報名時通知,阿塞索 骨科別:航空工程及無接環工程各科中英文日夜陪她
開
【課
二招收新制一年級,複數名 (一二年级至六年級均已滿額,不拍新生 五澡,查七毎月五十二(十個月計算) (二)招收大学柳税預科班交科及科系娱乐數名, (四)報名手铵:法用面向本校校長與普
聖士提反女校招生
3210
。
有“冠军香港新汰點(五)部名手榜:《湘中英文分刚域需報名表格 (3)最近阿正面相片兩 2.續交出生證明書
有加
街
五月
一九五八年九月一百至一九五九年