百三第四
B+XHEZ.NT
WAH KILIYAT PA
五期里
日二十月二年五六九一股公年四十五國民難中
J
升中指南 英文科教材
九六五年度
題蕷習専欄
今日在麗的呼聲出
時間:
上午七時四十五分至十一時 下午六時十五分至三十分
化學科 (十)
王錦釗。
| solutions to fast week
Question 1
LESSON 29
FORMATION OF KONUS
▲ word usually has different forms, it can be
Mūzjective,a verb or an adverb.
usea aa
Boub.an
e.g. 1 have seen a beautiful sunset.(adjective)
I have seen a sunset of great beauty,(noun)
The sun rises beautifully. (adverb}
Trees can beautify the town. (verb)
I)THE FORMATION OF ADJECTIVES
a. adjectives end in 'y's
We can prepare, hydrogen sulphide by the action of dilutë sulphuric acid on ferrous sulphide. A quantity of ferrous sulphide is placed in a flat-bottomed flask fitted with a rubber bung through.
When dilute which pass a Chintle funnel and a delivering tube, sulphuric acid is poured down the thistle funnel, bubbles of gas ara evolved and the gas hydrogen sulphide, is collected ovar vara vater er by downward delivery.
· HSO F.B ferrous sulphide
Pe 50
+
.
Ecally
28
aydrogen sulphide 0,5
Rubber connection 1
Thistle funnel
Carboard
Cover
SESAME (BRA)
*OTHER • (14) ELVESEKAS- ECHEVE
·皇仁書院軍犬領獎典棒,由黃曕敦飲隨主持,倒爲賢尖人
air
airy
sleep
BUD
angar cloud
Logry
cloudy
stors
dirt
dirty
wind
sleepy
sunny
stormy
wiady
fun
funny
haste
hasty
winter
Wood
wintry
wealth
woody wealth.
noise
noisy
tuate
tasty
b, adjectives end in 'ly':
father
fatherly
Wook
friend
friendly
month.
king
kingly
your
Weekly Monthly yuerly
life
lively
Bother
motherly
coward
e.adjectives end
fear
cowaraly inful':
fearful
COLGUT?
colourful
beauty
duty
grace
graceful
Bercy
beautiful' dutiful
merciful,
hope
hopeful
CBTE
car +4!
barm
RISE!'
рожег
Canada
Canadian
China
Chinese
England
Prance
English
French
Japas
Aurope
Japanese
Europeat
Russia
Russiab
Spain
Spanish.
2)THE FORMATION OF VERBS.
.By adding a prefix;
courag
danger
able
encourage
endanger enable
Joy friend
rich
enjoy befriend
enrich
b. by adding a suffix:
broad
bright
dark
deep
lapse
ripe
simple
broaden
beautiful
brighten
pura
beautif
purify
darken
bath
**tbr
deepen
breath
loosen
ripen
simplizy
c.other examples:
Blood
bleed
Food
hak:
heat
EXERCISES
1) Form adjectives from the following worden
...sat
b.plene".
•. gift
f.Chine
c.die h.attract
1. hate
1.Whele
2/Form verbs from the following verbsi
a.circle
b,new
c.quick
d.cloth
1
f.safe
g.danger, h.pure
1.friend
2+307_
Dilute sulphuric
acid
Ferrous sulphide
Gas Jat
of copper
(*) When bydrogen sulphide is bubbled through solucion
sulphate, a black precipitate of copper sulphide is formed, and the solution gradually loses its blue colour and finally becomes colourless. The resulting solution is a dilute solution of
suloburic acid.
Cuson
Cus
copper sulphate copper
sulphide black ppt.)
8,504
sulphuric acid
(dilute)
Bolation of terri
(b) When hydrogen sulphide is passed into a
chloride, the hellow solution i reduced to a pale-green solution of ferrous culoride and a yellow suspension of sulphur is formed st the sAKT time.
terric chloride
HS
·
2FeCl2
ferroua chloride
S
aulphur
·
hydrochlorie
acid
beaker containing (c) When bydrogen sylphide is bubbled into a
gus appears to be beach sodium hydroxide solution until no more absorbed and the liquad manila strongly of hydrogen sulphins, . solution of sodium hydrogen sulphide obtained.
NHS
Na
aodium sulphide
Tva Chemical tests to distinguish between bydrogen sulphide sulphur dioxide:
(1) Paur some lead acetate ablution into two test-tubes. Th**
nydrogen sulphide into one test-tube and sulphur dioride
A black precipitate of lead sulphide will into the other.
be formed in the test-tube into which hydrogen sulphids bas been passed, while na vifibis change taken place in the other,
(CH,200), Pk
isad montataja
Pbs
SCH,COOμ BEETLE Acid
(ii) Pour a nointion of potassium permanganate, auidified with) "ailuse aulphuric acid into two test-tubes. Again pasD hydrogen sulphide into one test-tube and sulphur dioxide into the other; in bőth test-tubes, the potassium-per- moeganate solution will be decolorized. Sulphur dioxids 20avas-a-cleaż volution after reaction, but hydrogen sulphide] produses a gilky suspension of sulphur
BAAAAAL's then
11
(b) When lead nitrate is heated an ignition tube, decrepit
first takes place, the solid then melts
ation
Lo a brovo layuád, and
Thi
When a glowing
it is rekindled.
a copious amount of brown fumes are given off. splant is put near the mouth of the tube,
When there is ac indicates that oxygen is given off as well. further action, the brown-coloured Liquid is allowed to cool, mo
i left in the ignition tube.
• yellow solid, litharge.
NO
* 2760 2Pb(NO3)2
Lead altrate katharge
(lead
·
nitrogen dioxide monoxiae) (browa fumeny
(e) when ferrous sulphate crystals are first heated, the light green
crystals cura white ma the wales of crystallisation is driven off.
Fe50 Fesu.78,0
hydrated ferrous
autplate
(green crystals)
anhydrous
70,0
ferrous sulphate (white powder)
When the white solid is further beated, it decomposes giving eff dense white fumes of sulphur trinxide and a gas which de- colorises an acidified solution of potassium permanganate. residue 18 red in colour.
21e50
503
S02T
ferric oxide
sulphur
(red solid) trioxide (white fumes)
The
(d) when mercuric oxide, a red powder, is heated strongly ID
hard-glass test-tube, it first turns black 10 colour, and then decompras into mercury, which condenaza as small globules into the cooler parts of the tube, and oxygen, which rekindles a glowe.
If there is any mecuric oxide left undecomposed, ing splint, will return to its original bright red colour, when cool,
2Hgo - Mercurio
oxide
2Hg mercury
12
(*) When ammonium nitrate is hɛ ated in a teat-tube held in an almost
Some of horizontal position, is melts to a colourless liquid, the compound dissociates alightly giving rise to the white funOS which are observed, The bulk of the nitrate decomposes into
celourless gas, nitrous oxide, and water.
UNO,
ammonia Bitrie
NH, NO WH
аподі nitrate.
KH, NO
N01
24
nitrous oxide
(Diabciation of the
nitrate IRTO AMODÍN Am mitris_noid)
ammonium nitrate da left in the When only a small quantity of teat-tube, an explosion takes place and some brown fuses are formed.
1) When ammonium chloride is heated in a test-tube, it will sublime. A white sublimate will be formed on the cooler parts of the test- tube... What actually takes pla on, is that the kanë
„the ammonium chloride dissociaven en weaking inte, ammonia and hydrogen chloride, -which recombine again in the cooler parta_of_the_tube,
Question
580 %,80 2MDS02050
(1) Potassium chlorate melts to a clear liquid when leated to about 340° C, Bomo" gas is given off at thin stage an some of the póðm assium chlorate decomposes, when the bubbling action stops, the liquid becomes very thick. The potassium chloratë m'a disemporad, juto potansium perchlorate," potassium chloride and oxygen.
POTAŽB Lum ablerate
SXC)
potassium chloride
-
20
JNC10
potassium perchlorata
chloride
Jusstions for next work -
amoja
[hydrogen ichloride
1 Na three naturally occurring forms of calcium carbomte,
Starting with one of them, acribe how you would obtain a sampl
() slaked iime,
(b) calcium sulphate.
(c) a solution of salvium bicarbonate, Explain the use of slaked lime
(a) in softening hard water
RAZIA
The substance must now be heated very strongly for any further decomposition to take place, At a Leaperature exceeding 100°*, the solid vill again melt to a clear liquid and the potassium perchlorate then decompʊgar înto potassium chloride and oxygen,,
10
(b) when mixed with coil.
2. A solution of sodium hydroxide contains 6,00 grams Naŭi per litreï
20 ml. of this solution neutrals 22.5 ml, of a solution of
Calculate: sulphuric acid.
(u) zie normality of the sodium hydorzide malution;
the atength of the sulphuric acid solution in grans pr litra}" the weight of zinc which could be dissolved by 250 ml, of this” acid solution;
(d) the volume of Lydrogen, collected at 27°C and 750 mm, pressure
which would be evolved when all the sinc has completely dissolved in the .moid solution.
deep
20
1965年度
180
9
從上鋒霸察,可知(1)鋼氏l際-範氏 睽一
<#>—ENT
中学入学試
算術科
(七)有公式之分數四則應用題
3流水鬩題
洗水問題與行星問題的計算方法,大致相同,也是計算距離、速度和時間的;但必先明聯溫 問題的神別名同
1.姐速——指般在解水中推人力帐小時划行的速度,所以又稱「静水速』和『船行油」 2.永光速一指船不用人力,憑水力每小時颿流的速度。
一般顧着水流加上划力每小時的速度,也稱[下行速
4.逈抚速...船源齏划力逆水而上每小的速度,也稱「上行速
共計算公式下:
1. 瞶流速划力十水流速
2. 游流速一划力水流速
3. (AMA+U) + 2
4.水流速(順從速逆流迎) 2
1
PROBZON • B5 –E • RATAE ?
├爆‡因彍流速一名力十水
砍断:力一呱流速一本
2
300
5
練習十
3
100
(2)跟氏1戾一攝氏
(十)
會憲方。
180
5
(F-320) × —
(年) 某水船饪小時划行8 已知知水流速蕊3一哩,求跟水速度?
(2) 有一小木船上行於455運長的河中,費時18————小時,游水流速每小時5盟,開小木船
下行要桃小時?
4
1
ន
9
1
2
耀庆科镪氏换算公式:
9
(3) 某汽船膜水航行時速14 一哩,逆流而上,4小時行10
喔,求製船在水河中的速
F-CX- +320
3
3
5
躞?
冰點以下度數,也可以照此公式,但須用貨數計算。在計算時,回大小桃 ,正數大得正數,貸數相乘得正數,商數夠下數則仍得無數,從要小心運行, (例)套装 176 是等於振氏袭若干度? (1982)
數大得色數
承上层 求水流速度?
1
該例的
(5) 一汽船在河中航行,上行時速14-一晚,下行時速22
6 上,問幾小時漂洗64哩?
暉,現該船機件失麵,漂流
2
5
($) 際氏 158 配合攝氏度?
解:羅氏1庑合鵝玩~ ·笑:昨天178 坐在冰點之上
(7) 龜24羌合排氐発度?
9
5
A: (1760 - 320) →→
9
5
48) 某工的汽球温度上升關網址 105,而某糖合屬熔民总氏195民,陳汽爐溫良超過
̇金屬熔點幾座?3
(9) PREMA POPUEST25 AREEK?
(10) 某日慿爲華氏與氏之和130笑,求各是幾蹤?
1440 x→→→ - 800
9
附練習九答案
1
1
(BL) RUB20EABEDE?
(1982)
8
故数船笹時划行:18哩-5-
8-12-0
(1) #ZAMES : 1+ (--+----) –
9
16
20
2
2
解:鵝线1産合跟氏,而摄氏20度型之上
1
1
1
1:1
5
1
1
(2) SAMFRA : 1+ (——
- — — -I (2)
(例二)小木舟蟹流下,6小時走72.
·哩,若划行時速爲9- 我,求上行時速喔?
9
4
$
8
13
2 1
3
#: 204 × +3.20
1
1
1
S
解:流速爲$72-
+612
12.
40x9320 BRO''
3
水流速爲:12.
2
12
(例三)端過10配合攝氏緱幾度?
解:擊氏10與在冰點之下,照公式用負數計算
故上行速爲19
€3) 甲獨做餘下的工程需時:[1(←fe)×3]小心~4~~ (天) 10
12
(4) ETZ1475 = ( )—————) + ( ~~ fem
20
~~) + 3-5 (1) 3x8 8x5
1
10
2
1
1
5
——) —10——— (4)
24
80
2
12
例三)某疳順流而歌,速度街小時4哩,逆流冰貌每小時區,求水速度?
解,因水流速流速流速) 2
RÜCKZALOKKA 1.4-TE) + 2
32
·塞看表問題
創業發表問題,必先明亲下面幾個要點:
常用溫度計的分別
「名稱」簡寫「冰點] 沸點 冰點至沸黜的度數
IMEI:C÷470 | 100 | 100%–0–100
肇庆] 32度 | 212
1212 32 - 180
(1980)
8
1
1
(5) 每天須做$1+(
#EE
(100-329)
《正100分320辇-200)
2
1
E
- 220 ×
110
(−22×5 -- 120)
20
2
(前球氏零下12-
(7)相距:(7週-5
(6)相距$(8+12元~ 3) × 4 --- 93
2
-x3-4-
3
3
1
E)
5
5
(例四)表零下10度分散氏她度?......
解3個氏零下10齡,必相當於舉氏冰點以下度數,所以也可照公式用負號計算
-100 × 329
-2x94320
➡180+320
140
(5-10-2)
( -2 × 9 - - 18)
18-3214)
(8): 306 + ( 8~~~~+120 ) − 15 ( /}% )
(9) ZEATHER: (8640+24) - 20———15——
(10) 追及時暕篇上午:10944405x5600) 440718-3
2
5
1
-10149400
(本製逢星期一
、判出
Page 15Page 16