·七國民華中
日十初月九年辰戊曆耍
讀者來函
來函請附·真實姓名 地址電話 繕寫清楚
個人遭遇·社會問彤 路見不平,歡迎投訴
類廣告
四個 小字卅四個
天二十元
天不折不扣上期團費,
工營運雞93-7431641
多出字數按一個位 培計事・長期照計,
汇 各界來模惠登,每段 四個一定爲一個位 字如超過一個位,即 每天收費二十元- 刊
本報分類廣告,歡迎
市區津小選港島南區 夜中教師
一以聘測驗 【職英傑雲
156租
3多!
門
升高年
教師
MIL
一年速成
1.政府認:
1 K 7706711&
H8904080
課
導:
2063%
書
CO [I/CA.
女助會計
1989 中學會考預習專欄
QuesLion-2.1
谮出版統
MILL & DALE PRESS
Chemistry (4)
Liquid Z
R. Chu
Podion
crystals
(3) White an ionic equation, giving the physical states of the supstances,
of each of the following reactions. (1) Drop
Corognate
hydrochloric acid.
mp of calcium
some dilute
(2) Add a piece of zinc graneles to
some dilute sulphuric acid.
(3) Heat a mixture of simonium suiphate and calcium hydroxide.
(4) Add a piece of aluminium into moderately concentrated potassium hydroxide and war the mixture.
(5) Add, at first, a few drops of sodium hydroxide sulucion into some
chloride solatior <in([]) then an excess of sodium hydroxide. (6) Add pcwdered ' copper(II)
(a) Name the liquid Z.
Liquid W
Write an equation of the formation of hydrogen chloride in the above experiment.
(b) why is an inverted funnel aseo?
A solution X is obtained wher W is water and a solution Y is obtained whenkismetrylbenzene.
Several tests are performed on the solutions X and Y separately and the results are tabulated as below.
Testa
Solution X
Solution Y
piace
plece
and
of dry H
pH paper
turns red.
No. colour
charge.
paper in It.
口
Put a plece
A colourless
gas A is
Na cas
butt Tra
isbon to it.
hydroxide to some dilute sulphuric acid.
(b) Explain briefly, with the help of EQUATIONS 04 each observations below:
(1) There is not any gas. evalved when a copper turning is added th However. dilute sulphuric acid.
when copper is added to some dilute nitric acid, a readish brown gas is observed.
(2) 我们 a
calciur
carbonate is added to some dilute sulphuric acid, at first, a few gas bubbles are seen, but the reaction rapidly stops..
·Question 2.2
In 謝 experiment below, hydrogen chloride gas is generated and disso ved in liquid W.
1989 中學會考預習專欄
明鸿出版社
MILL & DALE PRESS
Economics (4)
FACTORS OF PRODUCTION
Alain Li
Factors of production are the inpa pruduction.
There are 4 factors of production: A. Land
Land is defined as all the natural resources used in production.
Land has cheracteristics!"
1. Fixed in supply
Land is given by natureless
beings cannot increase or reduce its. Suppply..
2. No opportunity cost
Hutan beings need not sackifice any in the production of
because
land
is produceclam nature, not by human beings.
3. Immovable
Natural resources of variousi kinds
exist caly
natural, conditions are suitable
for them. Thus, they cannot be
moyed as human beings want.
Add calcium
nvolved which
forms an
explosive
mixture with
air..
Gas bubbles.
A CELCIESA
ga: 0 is
我家
Test 1.
報日僑華
(f) Explain the result. observed in Test
TV.
uestion 2.3
alachite is a green, wineral having a hemical formula CuC3, D4(H). Given: elow is the procedure for preparing one blue crystals using the galachite s the starting material.
1. Half-f.11 a beake" with dilute sulphuric asid. 2. Add
stir
powdered, malachite, constantly and add more, malachite until some of the solid remains undissolved.
3. Tilter. Put the filtrate in an; evapurating dish and heat. it over a water bath.
4. At intervals, din à Gass real into the hog filtrate, take it out ins
四期星 日十二月十 (八八九一)年七十七國民華中 (16)
(h) Why are the crystal washed with (c) A is hydrogen gas.
distilled water? Why is cold water preferred ta?
Bis carbon dioxide,
C is cumonium chloride.
(1) What is the purpose of pressing the ¦ (d) Fest 11:
crystals between Filter papers? Solution to Question 2.1
[{a}{1}` CoCDg(s)+21*(aq)—•Ca2° {an} +H2{};}}}
+CD;{g}*. *(aq)=112(g)
(2) Zn(s)?H°(aq)→→ zn2+(
(3) (NH4)2S04(5) Ca(OH)2(5)
• 2kH ̧{y}+C@50 ̧{5}+2H,900) | (4) Al{s]+204"{aq)=?420(£}
AT(DH} G* (eG)+{{g}
(5) Zi?+(aq)+20 (7(aq) →Zn{0}→{ s)
Zn{08),(201′′ (aq)----s7n{0H}2?"(ac}"
mg{n}+21/*iaq} - >@?*{aq)+Hqig} Test dif
C3CC2{:}+2H°(aq)
2*(aq) +H2@{2}(002(y)
(e) water is a polar solvent. When HC? dissolvey tri water, it ionizes to give hydroxium fors (30) which are responsible for the acidicity. Thus, solution X can turn the pH paper red.
(F) Ammonium chloride 15 an ionic scind, so, is as dissolved in water but not in methylhanzene which is a non-polar solvent.
Solution to Question 2.3 +2,0(2)(a) salachite is a basic salt,
(b) Copper(II) sulphate crystals. (c). The solid dissolves and gas bubbles
seen..
solution is
and allow it to cool. Repeat unt!}. smal blue crystals start to appear at once on the glass rod on cooling. 5. Stop heating and allow solution in the evaporating dish to {6} Cu{OH)2(s)+21*{ag)->?(na) cool. Blue crystals are farned. 6. Eller off tlie crystals, wash. (b)
in the 3 them 2 to
(1) Copper as below. hyuruyon smali times with a amount of cold distilled water and
7t Activity Series, 50,
cannot then press the crystals gently Gisplace hydrogen from the acid. between Filter papers.
Dilute "nitric acid is an oxidizing agent. It oxidizes copper and is itself reduced anitrogen(V) Toxide which is the brown gas..
(a) What type of såll is the malachite?
(b) Rame the blue crystals obtained.
(c) What would you observe or adding
the malaenite .to. the sulphuric acid?
Write an equation of the reaction between the calash:te, and elute sulphuric acid.
(d) why has an excess of the molachite
tu be added?
(e) What is the purpose of heating the
filtrate over a water bath?
Pass ammonia
ga. Into it.
No obulous chance.
Waite solid
C is seen at the button.
(f) What
the solution when blue crystals start to appear or the glass end sn ccoiing?
of
(c) Vome the substarices A, B and C.
(d) Write Toric equations of the
reactions in tests
.11 anc respectively.
(e) Explain the changes observed ir
¡B. Labour
Labour xefers to the ho both mental and production.
characteristi
Tanpply
abour depends on the
Eulon prction of the working-age groups and the number of working hours offered by the labour. force.
Movable
Tabour
from can Tocation to another, or from one occupation to another.
ՇՈՒ
Labour has physiological needs,
attachments
and
3. Human nature
personal emotions. Thus, its performance is not stable.
4. Individual differences -
of
abilities. skills.
and willingness
different. individuals vary substantially.
The
5. Non-storable
. The
а
labour available particular day cannot be stored far future use.
Improvable Educatión
(g) How would the rate of cooling of
the
affect. solution crystained
orgelization seshors can
Capital
Capia is gehed as the goods used in production?
the bjde
There are 3 forms of capital:
1. Fixed capital refers to producer goods which are used rapeatedly in production, e.g. machinery. 2. Circulating capital refers 10
the money reserves, component parts or stocks for production. 3. Social capital 'rerens to the facilities which social indirectly help production, e.g. schools, hospitals and roads.
Capital has 4 characteristics: 1. Raising productivity
The use of capital can raise the productivity of the ether production factors."
2. Involving opportunity cost
Capital is formed win resources diverted away from producing other goods. Thus, the formation of capita involves sacrifice of other goods.
3. Different degree of mobility
Some kinds of capitel can be mayad
between 'different industries and different places, 0.9% typewriter, But, the other kinds cannot
moved occupationally
De
geographically, e.g. dockyard.
(2) Calcium sulphate is formed on the
Surface of the Ting of calciu
it carbonate when
win reacts dilute sulphuric acid. Singe calcium sulphate is only alightly soluble in water, so, it forms on inscluble coat on the lump, thus preventing any further reaction. Solution to Question 2,2
(a) Z is concentrated sulphuric acid.
of
(b) The inverted funnel is to prevent
"sucking bac<*.
the solution because HC1 is very achie liquid W.
Depreciation
Capital goods are subjout to wear-and-tear.
D. Entrepren
Entrepresen
faced bears
Entrepreneurship characteristics: 1. High degree of
Entrepreneurs
• DCC
between between location
ides the way of
Maar 3 production the risk
in
has
2. Seperation of functions
In modern firas the decision- making or organizing task is undertaken V paid Managers while the risk-bearing -task is undertaken by the shareholders.
FACTOR PAYMENTS
Factor payments are the recurgs to, owners of the production Faces their factor services to prod
There are 4 kinds of Facco
Rent
A.
Rent is the retura-tad
other words, the paymentnyceived by the owner of a natural resource, 3. Wages
Wages are the porn todabour z
there are
payment
of weges
re
forded.
(d) thisfo, ussure that all the
dilute sulphuric acid is reacted.
(e) This is to concentrate the solution
by evaporazing off some water. {f) It indicates that tse hot solution has become saturated with the
soiute.
(g) Quick cooling would
Ma
crystals white slow cooling would sive larger crystals..
(a) Mashing the crystals is to remove any solution on impunities on the crystals.
Cold water is used in order c dissolution of the Crystals in witar. (1). This is to dry the wet crystals,
1. Time rate
Time rate refers to the system by which workers are
paid
according to the amount of time they work.
2. Piece rate
Piece rate rafers to the system
说 which Worker's are paid
according
goods produced.
3. Profit-sharing
the quantity of
Profit-sharing is the system int
which some portion of a firm's
profit 13 shared by workers.
Interest
Interest is the return to capital. The capital goods used 10 production are bought with money, 1.e. money. .capital. The money
capital may be obtained from money Tenders.
..in return seek interest partly for the risk of tending
AS Day
the deferred
Compensation
.consumption.
Profit
Prüf is the Lentrepreneurship. It is the excess.
cost of production. In other words, it is the uniqunt of revenue after the payments for the other production factors. 50 it is not fixed: it may be great, little or even negative.
AC方便讀者選擇旅遊
· the
and
training Cill
Něcove
the quality anc 注 of. labour, better
ipment
and
回池貼中學急
您或職學
旅遊介紹 專輪廣告 然
PLB
0-4747999 9.
代課 敎師 ®
大眼與中聘班英文
10-772900
**********
博覽旅遊 泰國•清邁•布吉島 泰星馬·星馬•泰星 日本•韓國 台灣
|旅行社牌照
*行程種類全港最多
有限公司 華欣七岩東莒四、五、七天 由$2590起 泰星馬九天:十关 由$5230起 潮戶大橋、四國、本辦海、陸、空七天 $5990
【本五天、六天、七天由$4790起 星馬 檳城、怡保、馬六甲)七天$4450 淸湛、金三角,曼谷四、六、七天由$2790起
| 馬(檳城、怡保·邦喀島七天 $4450 九州本州廸士尼聯遊 ㄈㄨˊ ㄅ 布吉島四、五、七天 由$3000起
|馬星(檳城、關丹)八天 $4740 東北日光廸士尼·
*直飛高雄、台北返港
*獨家安排蒙古烤肉·豪華夜總會 *台北最高赧之環亞大阪店
增加成本,多增:
(秀姑巒溪 (二台東(三)楓港
菲律賓、宿霧
高級四天、五天、六天、七天 由1990起 由2490起
四溪頭 (五)佛光山 六墾丁公園 宿霧 五天、七天 由$6790起
台北四天 $2390 台北阿里山五天$2790 多增造:(1)碧桃潤、大富郡、百島嶼
(2)紅磨坊夜總會
(3)發艚於中國城酒家
由$5590起
$ 4160 |東北 北海道廸士尼七天 由$6390 $4360 日本北海道ㄨㄣ受 由
$6490起
$6390
$6690
台北花蓮四天 $2490 台北花蓮五天 $2690 台北阿里山四天 $2490 高雄阿里山五天$2690 環島阿里山六天 $3090 環蠱七天 環島八天
$3290 馬尼拉住六星之巴拉沙、碧瑶生豐悅。
$3590 璞島九天 天天出發(回程可由台北、高雄返港)台譜收100元
$3890] 乘搭國泰,上午十時出發,下午十時返港
天天出發,可延期返港
由 $3490起 韓國本州廸士尼八天
| 馬來西亞(檳城、怡保、邦喀島六天 $3500 韓國九州八天
乘國泰、馬航、星航、早去晚返 韓國溫陽西天、五天(包單房)由:$3490起
三、四、五、六、日出發 ] 天天出發,回程可停東京、大阪或台北
布吉島、華欣七岩七天.
$3690 星馬六天
·清邁、曼谷、布吉島九天
$4090 泰星六天
【菲泰聯遊七天
$3590
新加坡四天、五天
多增进:{1}邐蹦入工海澳園
(2)模型械 布吉島注宿两晚或三晚新行程、任君選擇 乘搭風寨、泰航、天天出發可延期返港)
菲律賓、碧桃源、宿霧
曼谷、芭堤雅、布吉島
馬星泰、邦喀島 馬星
馬尼拉、碧桃源五天 豪華團
$2260 天笑出较
馬尼拉、宿霧五天
̇布吉島四天豪華團 $2590
還一出發 曼谷、芭堤雅五、七天 豪華團 天天出. 布吉島、曼谷、芭堤雅 六、七、八天豪華團$3490起 天天出發`
有意
東華團
$2590
曼谷、華欣、芭堤雅、七岩
·馬星泰(馬六甲)九闵豪華圈 冰一、六出發$5250
逢二、四七出频
七、八天豪華團
$3190起
馬尼拉、宿籍(濤灣)
謎四、五、六、日出版
馬星九天豪華 $5250 逢二、四、六出歌
七天豪華團
$2,990
逢二、四、日出發
菲泰七天豪華團 逢星期六出發
$3590
馬星布吉島八天豪華團$4990
̇孟五出發 馬星菲九天豪華團 $5250 浙二、四、六出鱲
推進工作
县已婚女性中學會有 |社會福利工經驗跟住
‘申請者請附殻廳近照寄
灣仔駱克31186 號 香港家庭計刚指導會 **********
記文員
CC初級或以上程度強打字 懸而定有意者國度歷所欲動 話附近照寄寄堙英蠱道十八
約洽
直字員
********
植字員工
81丙線20
********
************
兒中心
̇馬尼拉·碧桃源·碧瑤
七天豪華團
先出
北 京
$3190 (檳城、邦喀島) $2750g 七天豪華團
雄五、六、日出發.
癟五、六、日、一出租
笑天出鲭
三、四、五出艷
51790
笑笑出韆
桂林、江南、海南島、福建
桂林、陽朔五天豪華直航團·
粒
澳門、中山
澳門兩天超值 豪華團 天天出發 R $320d 澳門兩天遊(連中山) $430起 酒店+船票+接送
$280€ 中山、珠海兩天遊
天天出發
$308 起
東方公主號南中國海兩天遊
一、三、五出染
$1,790
$498 起
「江南七天豪華直航團
$2990 西安、洛陽、鄭州八天 豪華直航團 $3,290 昆明、石林五天豪華直航闔 $2090
北京六天豪華直航團
-$-3390- |北京七天豪華航空團
$2,690 $4,450 北京七天航空團
$2,390 |北京蒙古九天航空團
$2,990 北京 香港里拉六天豪華直航團 潼五、六、日出發 $4290 北京、承德、天津八天燕航團 $ 3590 靖二比胆 銀進分行現已啓業 認塘開源道68號觀塘廣場一樓36及141室 341200-4 <f
蟾菽、六·符、一出
€
************
请函版桥近照无明郵箱185號
澳門分行現已啓業 南海街73-75號時代商業中心1303室 TEL 339122
牌照編號350018
658422日仲小姐除
商業英文蠣
|待聘
效廣法刊明香
·本
刊告律登
物之性有
有質關定府日叁在
九三叁
力廣龐讀印柯必社必學必家必工 强告大者刷式有團讀生備庭 魔商
|海南島五天直航團
【福建、廈門、武夷山八天| 東方公主號海南島三天遊
直航團三、六出發 $2490
$998
報日僑華
廣告部電話:5-490884
|星晨旅遊
全經包專新歷六一創 僑濟竊刊間史月九
報萬豐翔悠五二在 許導有富實久日五於