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雄喬
WAH KIU YAT PO
報日僑筆
六期星日三十月二十年九六九一展公年八十五國民華中育教僑華
中文中學會考試題預習專欄
tar Nacl + AgNOg →
MCI + AGNO,
化學科 (六)
̇林錫衛•
自上=式知氯化物溶液與硝酸银溶液作 用皆生
色的: 沉澱,此為氯 化物之通性亦可利用作為撿驗法。
複習題五
複啫項目
食塩 氢氧化鈉
酸
填-
題
(2) 電解
(1)食塩易潮解是因含有
質;河加入 溶液使成 等沉澱濾去濾液蒸輊而得我
舊水在陽極生 氣
等雜
。
氣在陰極
液成器
溶液將的生
Q
測驗題一解答
(6) d (1) b
實驗室製法方程式
Zn + H2SO→ ZnSO4 + H
ZKCIO3 22 2 KCl + 3 02
收集法 排
排
⇒ No2SO&T H2O+ cor # ak
CaCO3+ 2HCl→ Cack+ H2O 瓶口向上排氣
CO2t
19770英文中學會考試題預習專欄
堅道英文書院主編
地理科
(六)
USOGRAPHY (6)
A)(1) Compare and contrast the formation of fiords
with rias. Ane.
Inleta at the mouths or former glaciated valleys on steep coasts are known as fiorde. The characteristics of fiords are inherited from prior glaciation. The glacial troughs ware secured out by ice action well below the low sea level during the Ice Ages and submerged by the sea as the ice melted away. These inlets are steep sided, narrow, and relatively straight compared with drowned river valleys, and they have the typical "U-shaped" cross- profile of glaciated trough, together with hanging tributary valleys which may also have been partly submerged by the seas Near the Beaward and thera. is often a shallower threshold, which may be either a rocky feature or a drowned. morainie bar.
FORD
成的兩種氣體混合慢慢燃燒生成。 氣此氣體溶於便是
(3)蓝酸令高錳酸鉀溶液自紫色變為
色令重鉻酸鉀溶液自橙色變為 色且皆產生氣
(4)
氣產濃白煙狀的 (5)盤酸與黑 (化铜作用會產生
的
溶液业
作用。
(6)氫氧化鈉露置空氣中極易
空氣中的
並吸收
而成碳酸鈉。
(7)氫氧化鈉俗稱 用途是可制
其主要
此氣使石蕊試纸呈
色此為檢驗
法
(8)氫氧化鈉溶液加入銨益中產生,
HIGHLAND
C'B' IS DEEPER THAN 'A')
Aria 18 a funnel-shaped coastal
indentation formed by the partial submergence
of valleys incised into coastal uplands. It聞
decreases in width and depth as it runs inland, The stream which flows into the head is reaponsible for exoding the original valley.
A RIA
>氫氧化鈉溶液與金屬類作用常生成不
溶性的
色的
色的 色的
化物如與氯化铁溶液
沉澱與氯化亚铁溶液生 沉澱與硫酸铜溶液生 沉澱
(10)氫氧化鈉溶液與硝酸鋅溶液作用生成.
沉澱氫氧化鈉溶液遇量
因氫氧化鈉與
時此沉都會 用生成 金屬不同是一種
之故。由此可知鎵與普通
元素。
平衡下列方程式並填-
(1) MnOx+ HCl→ MnCl+H2O+Clk↑
猛之原子價自 價轉為
(2) KMnO4 + HCl → MAC), + KCl + H2O+ Cht
錳之原子價自 價轉為
式知盐酸是
生成
劑與。
作用
硫酸籃 ®
Al2(SO4)3
氧化铁FezO3
碳酸銨(NH4)2CO3 過氧化氫
Az Oz
磷酸鈉Na3PO4
四(1)通入石灰水石灰水變混濁者是二氧化碳
否則是氮
CO2+ (a(OH), Calls&r H2O
(3)分別引火燃燒後注以石灰水若石灰水呈
混濁則原氣體是一氧化碳否則是氫:
200+02
Cog+ Calon)→ CaCO3f+ H2O (3)分别以燃着火柴置入能自然的為氫或一 氧化碳依(2)法再到之若火柴熄滅的為 氮或二氧化碳可依(1)法再别之若火柴 燃燒更猛者則為氧。
五(1)黑色氧化銅變為紅色的銅,無水硫酸銅自
白色變藍色結晶
Hk + CGO + Cu + H2O
CuSO4+ 5+2O→ CuSO4 = 5H2O
(2)石灰水先變混濁 後轉澄清加熱後再度
CO2+ Ca(OH)→ CeCOS*+ H2O
CaCO3+H2O+CQ→ CaCHCG)(可落) Ca(HCOy)+ CaCOS+ H2O+CO.1
further into finer particles. (this process is termed attrition), are used as weapons with which: to attack the land, This process of mechanical erosion by material transported by waves is known as corrasion.
As a wave breaker (the swash) sweeps materials obliquely up the beach, and the backwash drage some of it down again at right angles to the shoreline, there is a net movement of rock waste along the beach, Such as gradual movement which is known as iongebore drift represents the work of sea transport. As transporting ceases, deposition sets in, usually in shallow water or at the head of bays where the approaching waves have lost their erosive power.
LAND
Fock formations are, nomogenous, without structural variations. The ideal form is. fsometimes found where structureless sandstone.or shale formati one have been eroded by wave action but its development requires a delicate balance between rock resistance and the intensity of the wave 'attack, Local example can be found an Ping:: Chau. Kirs Bay,
WAVE-CUT PLATFORM.
WAVE-CUT
PLATFORM:
Ane.
('A' IS DEEPER THAN 'B')
HIGHLAND
1t 18 apparent that a fiord and a ria differ in their mode of formation, appearance, as well as utilisation, a fiord has been affected by glacial-erosion and a ria, by fluvial deposition. A fiord is fringed by steep
walls and 16 shaj Lower at its seaward end than it landward end whereas a ria has gentle sloping sides and it becomes progressively deeper seawards,
《it】 How does the sea help to modify the coastline?
The sea modifies the line where aea and land meets, Ite work is threefold, consisting of erosion, transport, and deposition. It erodes by corrasion, hydraulic force, and attrition. The water initially attacks lines of weakness in the rock face, such as joints and bedding planes, traps and compresses the air in the gape and fissures suddenly. When the wave retreats, the air expends. This hydraulio action causes the rocks to shatter and fall apart. Moreover, the fragments, besides being tossed about by the waves and broken down
LONGSHORE DRIFTIN
OBLIQUE SWASH
RETREATING" BFCKWASH
Name a coastal feature caused by sea eroszon. and another caused by esa deposition. For each of these, outline briefly its mode of formation.
An example of marine Brosional
armed with rock fragmente (sand, shingle, cobbles) whz oh are undoubtedly powerful agents of abrasion. Without such fragments, waves are capable of only limited abrasion, mainly on shale and other Tooks with bedding planes or Joints, wave-out platform extends from high tide mark to a Level beyond Low tade mark Such platforms are best developed where the coastal
WAVE-CUT FLATFORM, It as formed by ei
LWM
HIGH WATER MARK LOW WATER MARK
An example of nezine gepositional fo tire:- TOM3OLO: 13 15 a par of sna.and. sningie, linking an assing to the main ador guānecting two ia nds. The term comes from 1t Ly, where these festures are well developed. Coastal. currents pick up land-derived deposits in the shallow waters of the foreshore and transport them farther along the shore. These waste will, be then re-deposited as they reach the deeper, and calm water. In time, as more material in added, it will pile up until it becomes spat. The spit grows out from one island, but finally stretches across the narrow stretch of water to the opposite island, A tombolo will then be formed. Local examples include Cheang Chau, Pang Chau, and Shek 0...
QUESTIONS FOR NEXT WEEK:
A) With the aid of a map, attempt a division
North America into landform regions,
B) (1) Describe how 108вs is formed.
(ii) Outline the influences of loess on numar
aotivities.
(iii) On a world map, locate the areas where at con
be found..