育教備華頁一第張六第日二十月二十年酉辛磨旻
1982
中學會考試題預習專欄、
化品 (十三)
明德出版社 朱宏林提供資料
Chemistry (13)
Reginald W. Chu
MILI. & DALE PRESS LTD, Question 19
(a) A piece of sodium”
metal which has been exposed to air for some while is covered with a white powder Z. The whole: specimen is then added to 40 g
of prue ethanol and
3
2240 cm of a colour- less gas ris
obtained at st.p. When the excess ethanol is distilled: off, a solid consist- ing of compounds Z
and Y is left as the residue.
(1) Give the names of
the: gas X, and the solids Z and Y respectively.
(ii) Explain the forma-
tion of
the
help with (s)
(iii) Write an equation
for the reaction.
between sodium and ethanol.
(iv) Calculate the masë
of sodium which has reacted with ethanol.
(v) What would be the
mass of ethanol distilled off,
assuming there is
OR
英文
初中成績評核預習
一雄風出版社
ENGLISH
十四
Study the following advertisement care-
fully and answer the questions
followe
THENT
that
SESAME STREET
LIBRARY
ideal Gift For Kids
The
Sesame
WAH KIU YAT PO
報日僑華
no boss during the process?.
(vi) Suggest a safety
precaution to:
observe when
with boiling
(vii) The ethanol
distilled 01:
about
800 while the solid Y 18.
unaffected at this temperature, Basing on the above
information, state
an essential:
difference in the structure of
ethanol and the solid Y.
(b) State the conditions
under which each of the following pairs of substances can be made to react:-
(i) Sulptur dioxide and
oxygen gases;
(ii) Ethanol and
ethanoic acid; (iii) Nitrogen and
hydrogen gases; (iv) Iron filings and
water,
Sodium sulphite and dilute hydrochloric acid.
In each case, name the product(s) and write an equation for the reaction.
Question 20
(a) State the oxidation
number of the elements underlined. in the following. species;-
(i) KC104
(ii) MnOut
(iii) H2O2.
Street people have
taught generations.
of children to
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through television
Now they've
duced The Sesame
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Fifteen: wonderful
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Big Bird, Oscar, Bert and Erine and all the other famous Sesame Street charac+ ters bring the alphabet to life and make numbers mean- CingTul.
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(iv) C120, (v) HNO3 (vi) CH2Cl2 (vii) CaSO, (viii) HPy (ix) MHCl
(x) CaHy
(b) Explain, with the help of equations where appropriate the following: observations.
(i) Bleaching powder
smells strongly of chlorine when exposed to air aud gradually loses its bleaching power. (ii) A colourless |
explosive gas is evolved when zinc. is added to dilute sulphuric acid. However, the evolution of the gas can be speeded up by adding - copper(II) sulphate into the mixture. A piece of blue litmus paper turns. red when put into dilute sulphuric acid but is darken when added into: concentrated sulphuric acid. (iv) Both glucose and
sodium chloride are white powder. However, an aqueous solution of glucose | is a poor conductor of electricity. while an aqueous solution of sodium chloride conducts. colour
pages, Sesame Street Library is designed for
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The 15 volumes which. build to The Sesame Street Library are being released on weekly basis.
Buy your copy for kids at the SCMP Family Booked shops,
s. MTR Kiosks, Supermarkets and selected stores at $ 18 each. Questions..
How have The Sesame Street people
taught
children?
Is it fun to
electricity readily..
城
(c) 2.57g of a compound.
P of formula S02)
is completely
dissolved in 25 cm- of 2 M sodžum hydroxide aid the resulting mixture can exactly neutral. ize:10 cm) 3 of 1 M. hydrochloric acid.
(i) Write the equations
for the reactions: vinvolved. (ii) Calculate the value of x in the formula.
Question 21.
As shown in the diagram below a zinc rod is placed in 1 M zinc sulphate. solution inside a porous pot. The pot with its content is
then
placed in a beaker containing copper plate and 1 M copper(II) sulphate solution. When the key is closed, a current is registered ed by the ammeter.
Key
ammeter
Copper plate
CUSQ
3.
rod
IM
(i) Write ionic
equations of the reactions at the
watch The Sesame Street television
programme.219
The Sesame Street people have
日六月一年二八九一股公年一十七國民醫中
zinc rod and the
copper plate
respectively.
(ii) Would there be an
electron flow from Y to X in the external circuit? Explain your answer briefly.
(iii) In what direction
would the
sulphate ions
paes through the porous pot?.
(iv) Kould there be any
change in the colour of copper(II) sulphate solution?
(v) If the copper plate changes its mass by 2g at the end of the experiment, what would be the change in the mas8- of the zine rod?
Cu-63.5. Zn=65,4 )
(A
(vi) State three changes
you would observe when the zinc rod and 1 M Z¤SO,
solution are replaced by silver rod and 1 M. silver nitrate solution. respectively.
(b) Several reactions
were carried out on
an alkanol M of formula CH2O as shown in the block -diagram below.
produced something
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How many books
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9.
The Sesame Street:
10.
Library2:
Mame three of
Name
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Name two things
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Are the books
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My cousin is seven years old. Areen these: booke auitable for him?
How much does
each book cost?
Fame three laces where I can- buy these books
Ansverst
2.
They have helped children to
learn through
television.
Yes, it is fun
to watch the
programme.
「galkene W
Na
la whit
solid 2
自
alkanoic)
acid X
5
chloro-
Jalkane
(i) Identify and name the
the substances M, W
X, Y and Z respectively. (ii) State the
9
reagent(s) and
conditions neces➡ sary for converting M separately to W X, Y and Z. Give equations for each of the above conversions.
(iii) If compound W is
heated alone in: the presence. of: catalyst, a
compound with a large relative molecular mass is obtained.
(1) What is the
compound formed? (2) Give an equation
for its formation
(iv) Give the name ahd
structural formula
a compound P.
compound Y. Compound W. can react with hydrogen
chloride to give a
compound similar t业 compound P. Give an equation for the reaction.
The Sesame Street Library. Fifteen .
Big Bird, Oscar, Bert,
Erine.
(Any three of the above.) The alphabet and numbers.
an colour.
Yes, they are
auitable for hit
$18.
10.The.SCMP Family
MTR Kiosks.
Bookshops,
Supermarkets.
The end
管制犯規行為5: ...他說:「我確實保
教育轳審長許璚呼
·常飪四個月將資料照, 校成校內師生任何不利一及短期性的政策及行政 對保密+而不會引致举一建以訂出過結的長期 没各桄(踅的贲料均區 問題向教育署署長提出
,以期能獲得全面性的常委會的陵權範圍
·数署現要求學校經及娛樂事務嵒理處的代
生尼本嘅案常委會提供一交建,成員計有教育 中學生纪律問題的資料,就會褔利署,政務總 ,亦將胃最近成立的學,主席技教育署刈署英幹
·規及寫法行攝的情况。... 調查是由學生纪律 单就所發現的纪律
·泰政與風公署,影視 ㄚ監學生犯規及 趙校長合作,將真實情|遠法行爲的竹品,並作」
篇水流
篇阿
點很重要。就是他們十分鼓勵學生對論。學
出的
醫學)大樓王開幕禮。
港督麥理浩爵士將於明日(一月七日) 李卓敏基本器平大樓達萬公尺 下午三時卅分爲香港中文大學李卓敏八基本
中大醫學大樓
港瞥明日開幕
僅學做生培来定理
發說他道很好
̇無數
施
來前站,要做攝到却又絕不健犁野!!
·數學課絕無僅有,考試壓力越來越大···君 一學,對娘學完全失去興趣,以討論方式上 劉,我們產做得到應?現在是許多學生害怕 壓力、讓學生畫批發朥月己。可是。看來簡 也发商草培養與誣,鼓勵討論,微輕者过一 一的語言寫出來。」他對數學教育的意見者來
'丘敎授鏡「好的數學的基本規律園
教
目的在監察中學生 學進行紀律問題的調查學校,而非指香學校。 教育署已在全港中;器查的目的是協助
全面展開調查中學 學生犯規違法情况
許瑜呼籲校長合作按眞情實報 資料絕對保密全不影响學校及師生
數學教育
·最近才君到丘成
在崇基學院 時發 八零年十二月十三日 數學教育』 - 那是他 , 題目是:「學與 一桐教授的一錡演醤鐡
之後我要幸自己沒有錯過道路好文章:雖然
·教育·碴陌扼要,真是改學家的本色“我鬥 有多。還關講辭不長,近講數學、又語數學
·老的,覥現在已年
,對數學本身的美潑的欣賞视力。」
:「美國教育有很多失敗的地方,但有一
在論及數學教育時,他說:
「教蚊擧當然要培镂學生對數學的興趣」
向教育莞段會作出報告
女在訂出道當的政,這惱修訂政策及徵求 假
國華
華僑日報教育署教專協會
年署
小英: 一 路的人是個筋眼的女孩子呢! 的孩子,及時得凝治妾,那個母親連聲感謝,在燈光照耀下,才發覺就 心,跟我來-硬拉着那個母親的手,大踏步去了,很快到達醫院,發高為 帮助她,那女人肉了哭得更傷心。正在絕望的時候,忽然有一個人說請放 來,便哭了,求求你們帶路吧!那些路人說,他們也是迷失方向,不能夠 ∉霎郚助•她粱筏子發高然,抱她到醫院去,因應太大君不見路,心急起 忽然聽到一個女人凄涼的哭醒,有些路人循聲走到女人面前,問她有甚悲 ,路上的車子亮起車燈,滑劑外緩緩地行,更濃了,行人摸索着行, 還可以模獨地看見前路,但越來越麼撒了,路上的行人大都匆匆趕回家上 海陸交通也停頓了,因此有「獲都」之稱。有一天,正午開始有霧,起初 英國的倫敦常常有大霧,霧農的時候,由花茫一片,伸手不見五指,所有 剛巧爸爸講了一個很有意義的故事,我把它告訴你是最好不過的了。 你好嗎?昨天在路上遇見芳蛸,知道你很掛念我,聽後心實很不安。
希望你在這個故事上,得首鼓勵。.
有帮助别人的决心,總能在肚會裏發一分光吧。
,我聽到這個感人的故事,心義想,傷殘的人士,只要他不自暴自來
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「元,悉救由香港政府邊就支付。 当 學院臨床的難教學之用,建築費用遠二千黨
畫,新基本醫學大怏楼高九淼,實用面積遠 中大前任校長李卓做博上亦已自美燕潘準開
九干五百六十六平方公尺,座落校園中央部 八份,從近祥學策,該大樓主要用作中大新醫
、
的工作 及各部門之間推行政策 後,統各部門內部
委
員會同意各項新。
·常委會主席梁文
亦呼筑各校成長及教師
合作,檢討被內德育的
結果的可靠與否,合照 乎所收到的資料是正
|出席是項盛典。
一推行;
正毅:当张區:低或下午班,一特曼阿特人
·平衡〔二敩至大战)
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中國語文園地
式可校佳密你宝
邊理解常我們
附註有界市接盆學 况,因此你們是向常茲」,校址:九龍鬱草業街 我德福花嘒. 直樱花果惊遇社记癩彬|開學日对:一九八二年二月三日上午九時 電話:三七五七七四九一 飛馬地鐵九龍閟站,甄落成之幼稚區暨沙兒園(
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香港中國語文学會主持的
情
教育署署長或學生在
第十二期
造字的方法(下)
堅
字方法,這一場繼續介將其餘兩種 字。例如:用「 」煮示憐,用 太示聲粖. - 搭配起來,合成一個
那麼,這隔「奕一下又是用甚顺方 「其」,礤作「鏡實」的「點」。 字,例如「其」上川個竹頭,成為 了「減铈」邁晡放抵,艾導另查新 合用一個字,增加了宅的台州。場 字法)。这座游法的冰點是兩個意思 」,實際上道是一種「不造字的造 養,雷射做「其他,其餘」的「其 *「悲」原宋是「邵丌」,取它的 ,借用做「不肴,不要」的「不..
如:「不」來是花 礬的現成字來忙戏第一 「造出一定數飛的宇以後,就用
現成的圓形,一個表示意思,一個
三、搭配音說法 這種方法的特點是,借用兩個
分之九十段上。
如果你有興點,就同下面一
·烈的字。你知道該加甚熙字嗎? 樂與另一個字搭配,就會變成同】 i摊一組的五鷊字兔無關係+但如
下面有兩百字,爭者之
可以跟另外一些字搭配,成柯一 二、下面有兩字,每一個都
道二十七號五樓本會 二〇三二七號或軒尼詩 來件請寄軒尼詩道郵箱
(RX)
樓或辭
·留尼鄯
詩箱
培元校友會 爱舞賀新年
垫元英文类完谈友
新年姿舞向,是晚到 塔入數十分踴躍,填面
堅道明究中心無關,無
科別:(一)高級無綫電及電視工程科 (二)高級彩色電視工程科
東南無綫電專招生
二、借用同音法 表示意思,指包起來,就清咳「話」雖一空,孟梅斯榮,升,電話:K九六〇一式六 (中三結業生免試入學) 「口、年、竹、手、月、玉、石熱開,各會區及來賓北校址:旺角花園街七十五至七十七號十腾大厦 試期:一月十六日 開學:二月五日 :(三)無綫電及電視技術(夜校)
·配,就構成「棋、湖、花、
「異」上加「竹」如果[]張 米、月、水、崑、欠、馬示
字:上面裝的「其」紅粘贴花「
物,抽象的意思就臮撚霋或用記 燒示。阡如「不著、不要一的「 備糝記捻法」遒用於有形可見的我 相同的圆形來表示另一圈意思"「 不」,怎妾表示呢?「其他、其餘,,走的字政多,在現代漢字裏,佔百
「不得不改變辦法:
、、祺」導新字了。用辯稱辦法
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