育教儒舖 頁三筅張四第日九十月一十年酉巴屉夏 WAM KIU YAT PO 報日橋
學會考試題預習專欄
化學科
(八)
·林錫衡·
複習題X
複習項目基本定律和學說
填-
題
ICE LIBRARI六期星日七廿月二十年九六九一座公年八十五剧民奉中
組務服會社會學同事大 動運貧濟起發底年曆農
·衣寒論無贈捐心熱士人會社盼 迎歡表衝等食粮及品用日、錢金。
他此次什翻雜大,
服務超同時進行課赛工店 有意拍極跑路
常用具、金镪及粮食的
中人士,为長仁焉,大 力捐 無論
特此呼籲社會上各界熱 阶进大到財力和物質,
交大專同单合就食
九各教會學校和粉開
不少學校促請剪短
勇中生長髮披肩 有男女難分之感
露 雅各伯恪士稿:
對於剪去長髮,甚感收↓其家長云。 此泰而討論,結果8 唐自剪髮,無要 此祖露好。若妈譬縠因發變,但學生多接受 一去長與符說:彼得一家長,宿命其子弟剪去 若干名男學生於剪 不難,閲甜,创通知共 剪去,成爲安疵之花加等將長髮剪去,如彼等 「伯茲士之攜香,將長髮一去,而是勸告及迎請彼 棒生,只接受校長猴仔|不是命令學生將長髮剪 |饼院若干殼長及同之男」。她各伯修士又體出
·堅尼地道聖若瑟英文,使人限有耳目一新之線 有祗谡帔,影响校一改爲普通「花」, 命將我長榮剪去,以免一整已不再披在网上,
分别使用帶導方式,默年限有之傳出。菜及近 中苦干岑生之作「傳皮乃以客鬟之態度邁爾往 「剪髮運動」,對於校 編男生髮長至同獻。 長髪男生蕊校上課時,
日
活抗計工,該上項摇發 給到公况災九的得方在能實行湾
愛心作
同學食秕合服務基亦當
;,天氣錢,香港大專
(1)在化學變化中反應物的
和生成物
相等。此稱為__ 定律。
(2)化學方程式係用來表明化學變化的事實
所以每一個化學方程式都可作為 足律的例证。
(3)西種元素组成多種化合物時在這些化合 物中若甲元素的重量 ●則乙元素的 各個重量必互
●稱為
170英文中學會考試題預習專欄
堅道英文書院主編
地理科
GEOGRAPHY (8)
(A)
Write an account on the work of underground water
in a limestone region, making special reference to the development of the characteristio physical features found therein,
Carbonate strata, or limestones, composed of carbonatea: of calcium and magnesium, are highly susceptible to the action of carbonic acid produced. by the solution of atmospheric carbon dioxide in Boil and ground water. The main precess involved is the widening of fissures, joints and faults by aolution, and a pre-requisite for its action is that the water table must be well below the surfaós to allow water to percolate continuelly downwarde through the rook.
(4)蘭頓原子說的要點是(4)物質是由稱
的微粒所構成的,(b)同種
Ans.
的這些微粒其 相同不同 子不能被
和
的則截然不同,原
(原子以
的颗粒互相结合而成化
物的分子
(5)構成原子的重要基本質點有
和
三種。依照近代原子說 密集於原子中心而構成_ 则在外国游時 氯化铁的重量组成是,氯重:鈇 —
氯化亞鉄的重量組成 鉷重: 慈雨化合物內铁重量比例是
此紀錄與 定律
計算是
(1)燃烧氨0.25克生成水225克,又以氤選 原氧化銅1-59克生成鋼1-27克和水0.36 克試据此二實驗以說明定比定律。
(2)某金屬兩種氯化物中含氯分別為15.05% 6,20%,試以此說明倍比定律若前者化 您式是XC1,则後者的化學式為何。
(3)d.
(3) C
·複習題解答
=()被金屬置換氢硫酸 按酸、硝酸
甜联
磷酸
(3)氧化物、 氢氧化物 鹼
酸酸
(4)氫氧化鉀、氫氧化鈉 氫氧化銨
(5)酸味苦濃味
(6)正蓋 酸式接盖基式蓋
(P)酸茗基苔大
The surface of the limestone, due to the irregular solvent action of acid waters which pick, out more readily attacked zones such as faults and joints, is often fretted and furrowed. Surface running water disappear underground
through vartioal openings callad sink holes.
group of such inlets will lead to a cavern below. The joint or jointw below are enlarged by Curther solution and where streams persist in their flow,, there is a large amount of chemical solution which reaulte in the opening up of a cavern. Limestone ouverns form a series of subterranean chambers connected by underground streams,
Frequently caverns show the development 口味
calcite hanging vertically
Patalagmites. A stalaotita is
the roof of a cave, deposited from drops For be o
containing calcium bicarbonate which have seeped. through oravices and joints. The caloite is deposited partly because of evaporation, partay because some of the carbon dioxide in the water Gscapes and we part of its dissolved calcium
bicarbonate is changed back into calcium carbonate, From points on the cavern floor upon which there falls a steady drip of water, postlike columns terned stalagmites are built upward. Stalaotitas and stalagmiten may join igto columns; the columns forming under a single joint crack may fusa into solid wall.
If the Fimastone rocks rest on impermeable Tooks then this water will reach the surface again where the two rock types meet the surface. The water may issue out as streams or springs
damper than the surrounding desert thüs chenical weathering would be more active in this area. Chemical weathering would prepare fine particles ↑ to be removed by wind eddies. Given enough time, a large depression may result and example of such deflation hellow can be found in the Qattaza Depression in Egypt.
FAULTING PRODUCES LINES OF WEAKNESS
FOR WIND TO ATTACK
HOLLOW
WIND EDDIES WIDEN THE GAPS TO
FORM DEFLATION HOLLOW
GOUR:- Wind can transport fine rook fragments and Band particles to a very long distance and during the journey such particles would perform the work of erosion on any rock masses which are on it way. However, the transport of such material is very limited in its vertical extent. It is estimated that the height attained by such particles seldom exceeds 6 fast. As a result the erosive work of wind is restricted to undercutting the base of an up-standing rock mase. A gour is a tabular mushroom shaped block of homogenous Took forned
wind erosion.
by
FORMATION
OF
GOUR
STAGE ONE
(
碳酸氢
(5)硫酸鋁
(6)醋酸鈉)
學名
硼酸 氢氧化飯 硫酸铁 亞硫酸 次氯酸 氧化勢R 亞硫酸氨鎂
化學式
H3B03
Ba(OH)
FECSON
H2SO
Mg(HS03)
磷酸 亞磷酸
氫氧氧化鋅
硫化氫R
Zn(OH)C!
HIS
高錳酸鉀]] XKMnOu
邊氧化氢
退氧化物
LIMESTONE FEATURES
B) Outline briefly the differences between 2
dendritic drainage and a trellised drainage pattern.
Dendritic Drainage
1. Tree-like pattern
Found in areas where, rocks are of uniform resistance
Resembles the trunkc
and branches of a
Rivers developed
without structural
control
Frellised. Drainage
1. Rectilinear pattern
2. Found in soarplands
with bands of alterna tel hard and soft rocks oscuring at right angles to the initial slopes *
Resembles a garden trellis
Adjustment to structure has taken place
Write short notes on the following
(i) deflation hòllow (11) gour (iii) seif dune
DEFLATION - HOLLOW!- On the general desert surface the wind removes the finer producte în sus pension and may carry. then to a very long distance befor they are deposited. The resultant surface would be composed mainly of gravels or bare rocks. Some
desert hollowm may be attributed in conne
part to deflation. An initial hollow, whether acoured by the wind or not, would tend to be
ap ta
with
SEIF DUNEI➡ Self dunes have heights comm 300 fast and range in length from + to The seif dune may be describe as a brosd tapering wand ridge; longitudinally,dispose respect to the persistent wind. The seiz formed by a coalesence of a series of ores dunes if they are subject to a strong wind from: another direction.
Answers to last week multiple-chofo
1.(4) 2.(6) ~ 3,(9) 4.(n) 5.(*)
Questions for next week's
uive a concise account of the salinity of oceans and open sene.
Hrite hotes on the followings
Land and sen bzresen Hansoona
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