·七國民華中
日七初月十年巳己曆夏
報日僑
̇六期星 日四月一十(九八九一年八十七國民華中(30)
there are
0) = .94.
following
fH}
1990:中學會考預習專欄
-明選出版社
MILE & DALE PRESS
Chemistry(5)
Unit 3: Preparation, Physical Properties and Tests of Common Gases
Name
Chlorine
C12
Laboratory Preparation
Physical Properties
1. By oxidation of conc. 1. Greenism-yellow, heving a choking HOT using KMnO4(no heating), unpleasant smell, Extremely Müz, Pb02 or Pb304 (all with neating).
24C1+(0) - H2O+C12'
2. By heating a mixture of
sodium chloride,
Icone. H250a-
Na2S04+2HC1
4HC1+Mn02 NaC12+2H2C+C]2}
nanganese(IV) oxide and
| NaC1+H2SO4
Hydrogen
2
Jabove hydrogen in the
Aitrogen
rray of 10
彎
ontains 20
L
GHE
Cxygen
02
poisonous..
12. Acidic to litmus land bleaching
white).
3. Ayout 21 times denser than air.
4. Fairly soluble in water.
15. Does not burn.
6. Easily Fiquefied under pressure.
By action of a dilute acid, 1. Colourless, odourless, tasteless, (except HNO3) on a meta!
JActivity Series.
3.g. 2n+12504 - ZnSO4+H2
By heating a mixture of sodium nitrite and jammonium chloride solutions,
Pleating NH4NOg alone is explosiva.)
||NaNO2+NitqOL → NH&NOq+N&C!
NHLNO2 N2+2H20
1. By catalytic
fecomposition of hydrogen peroxide, using Mroz as
itne catalyst.
¡2H202 - 2H20+02
2. By Heating potassium
ichiorate with Moog las
the catalyst).
(2KC103 KC1+3C
3. By heating potassium
nitrate or sodium nitrate
|2KV03.— 2KNO2+02
Ammonid By heating armonium
salt with an alkali e.
NH4Cl with Ca(OH)2.
2NH4C1+C6 (CP)2
→ DaC12+H2D+NH3
|ren-poisenous,
2. Neutral to litmus.
13. The lightest gas known.
4. Insoluble in water.
5. Burns with a pale-blue flame in
air to give Hg0.
6. Forms explosive mixture with
lain or oxygen.
Tests
Name
Laboratory preparation
Carbon cioxide
1. By action of a dilute
acid eig. HC), one metal
2
carbonate e.g.limestone,
R. Chu
1. 8y its characteristic
choking smell.
12. By its greänish-
it
yellow colour.
3. By its turning wat blue litmus paper red
and then bleaching it' jwhite.
It gives a "pop" sound
on applying a flame to it.
1. Colourless, odourless, tasteless, It gives negative nen-poisonous.
2. Meutral to liteus.
|3. Slightly canser than air.
4. Slightly soluble in water.
15. Does not purn nor support.
combustion.
1. Colourless, odourless, tasteless, non-poisonous.
2. Neutral to Jitnus.
3. Slightly denser than air,
14. Slightly soluble in water.
15. Supports combustion.
1. Colourless, having a (characteristic pungent choking
smell. Poisonous at high concentration.
2. Alkalne to litmus.
3. Less dense than
4. Very soluble water
|
tests towards litmus:
limewater, and a lighted splint.
It re-kind as a glow ng spint.
Physical properties
Tests
(1. Colourless, odourless, tasteless. By its turning limewater
milky.
2. Weakly acidic to Fitmus.
3. About 1 times heavier than air,
[CaCO3+2HCl - CaCl2+H2C+Cl2:14. Slightly. solubie in water.
2. By heating a metal
hydrogen carbonate, or a metal carbonate except NagCO3. and K2C03.
| 2NaHCO3 - Na2CO3+H2O+CO2
CUC03 → CuO+CO2
5. Does not burn ner support combustion,
16. Easily sodified under pressure.
Carbon 1. Ry reduction of CO2 by mcnoxide |red-hot charocal.
[0 CO2+CCO
2. By dehydrating oxalic lacid, using conc. H2S04.
(002 is removed by JQ. Nao-)
1. Colourless, odourless, tasteless. By its burning quietly Extremely poisonous.
2. Neutral to limes.
3. Slightly less dense than air.
|4. Insoluble in water.
5. Burns with a blue flame in air
to give C02.
ip air with a blue
flame to form 002 which
turns linewater milky.
401
itmus.
Hydrogen By adding conc. H2504 to chlorice
to common. salt.
1. Colourless, having a sharp taste
j and a choking, irritating smell. (Poisonous.
2. Acidic to
|3. Slightly denser than air,
4. Very so?uble in water.
5. Does not burn nor support combustion.
11. By its forming in
mcisted air.
2. By its forming dense
white fumes with NH3.
Vitrogen (By action of moderately monoxice conc. HNO3 on copper
NO turnings
30+BHNO3 - 3Cu(NO3)2+420
+2N0
[(N.B. N20 can give the (same resuit.j
-Nitrogen (1. By action of conc. *NG
eoxice fon copper turnings.
02 [Cu+4:NO3 - Cu(NO3)2+28p0
+2N02
12. By hnatory lead{{f)
:trate crystals.
i1. By its characteristic
pungent smell.
By its turning yet
2Pb(NO3)22PbQ+ANO2+02
1. Colourless, small unknown. 2. Neutrd to litmuse
3. Slightly less dense than air. 4. Insoluble in water.
5. joes not burn nor support combustion.
1. By its turning brown
on contact with air/ (oxyger.
2. By its turning aqueous FeSO4 dark- brown.
1. Reddish-brown, having a pungent, irritating smell, Poisonous.
2. Acidic to litmus.
3. About 1 times censer than arr. 4. Very soluble in water.
15. Does not burn nor support
combustion.
6. Easily 1:quefies at room temperature and one pressure.
By its characteristic reodish-brown colour
jor pungent, choking
smell.
dioxide
retmus paper
502
Qua
CuSO4+2H21)+SO2
s the only compon
13. About 24 times denser than air.
2衛 7n of dil iClo
alkatane gas.
刺By its forming dense
ish-
white fumes with C: gas.
sodium sulphite. Heiply is after required Na 503-2HC1
財團高價收購
5. Burns in oxyssen wathy
yellow flame but got int
6. Readily liquefiedal S1146
財團徵求
by heating conc. HpSÉg 1. Colourless, with a choking small,
Poisoncus.
12. Acidic to lithus.
4. Very soluble ir air.
15. Does not burn nor support
combustion.
1. By its pungent.
|choking, sharp aerid
smell.
2. By its decolourizing
purple acidified [KMnO4(aq).
3. By its turning crarge|
acidified K2Cr207iac) tol green.
財團徵求 財團高價收購 分類廣告
number of
就
be the
不交吉樓或交吉樓舖 全幢或一批·大小樓舖
港九均合·無須睇樓 | 即日成交·免費估價,歡迎查詢
1)
3-928102沙龍地產
「九龍旺角洗衣街117號A地下、水務局對面
貨倉旺舖出租
●廠房平租
金馬倫道19-21號D. 七百伍拾尺有益?
CTX + 1455,2 **+**/** [9:
你,酒介貨倉及工場。有意請電
EMERSONA
旅遊介紹 專種廣金
台電阻會源
加啾日现3-7212956
即時付款免徴 酒店式樓
即不交吉樓毋 交吉亦可 公 付款 全幢分層程
不交吉樓舖 交吉亦可 「全幢或大批更佳 無需看樓
價合成交 港九均合
大字四個小字卅四個
不交吉樓或交吉樓舖
照榮投資公司
全幢或分層·大小樓舖體遊
港九均合·無須睇樓
每天二十元
每不增多:
即日成交,免費估價,歡迎查詢
3.7809676
免費估值港九均合 金山行
3-631815(專綫)
04762175 4776771
藍地屋租
20-6790982 S
東莞廠房
門] 蟲銀行大廈寫字樓韞
中環銀行大廈寫字樓招租建築面積498 | 1頒料中環: 帆中央冷氣系統管理完善交通方便有 意請電:5-231637區先生治 ******************
專欄廣告
博覽旅遊|泰國•清邁•布吉島|泰星馬•星馬•泰星日本・韓國 台灣 :
有限公司
旅行社牌照 No.350090
*行程種類全港最多*
泰星馬九天 $6190
| 華欣七岩東芭五、六、七天 由$3390起 馬星檳城、馬六甲)泰九天$6190
尖沙咀星光行1427-1428室
3-7151661 3-7351031
【本州七天豪華團
名古屋博賢合金沢東京六天、七天由 $6390起 多壇:(一)秀姑巒溪(二)台東(三)楓港
由$ 5390起
(四木柵動物園五孔雀園 【馬泰(布吉島、星七天、八天由 $5499起
六九族文化村 馬星(檳城,馬六甲)六天$4840
·中医皇后大道中48萬年大厦11室,京華酒樓擇上
1 A and B is.
5-217235 5-268305
九龍馬頭圍道76號
3-7826933 長江地產
【招 上環寫字樓
招 租
•本五天、六天
·清邁、金三角、曼谷四、六、七天由$3290起
「九州本州廸士尼聯頭七天、八天
布吉島四、五、七天
由$3500起 需星(檳城、怡保,邦喀島)七天$5190 東北日光迪士尼六天、七天
馬來亞(檳城、怡保,邦喀島六天$4100 東北 北海道廸士尼七天
日本北海道六天、七天
泰星六灭 $5140
[ 移民急頂
位於東聯慶己七星小利豪華酒店 (從業中)急頂或承包,另有深項市 橫: 3500平方米,有望請電 0-4792156 Fax : 0-4744679
選擇旅遊
*獨衆安排藏古烤攤 *台北往最高級之統一大飯店|
台北四天 $ 2820 環島阿里山六天 $3660| 申$7190起 台北花蓮四天 $2820 環島阿里山七天$4080 | $7190 · 台北花蓮五天 $3240 環阿里山八天$4500 *早機去,晚機返。
*純粹旅行團,不是帶貨團、 天天出發(回程可停留台北,台證收50元
律賓、宿霧
由 2490起 高級四天、五天、六天、七天 宿霧五天、七天
多增遊:1 碧桃冯
由 3350起
淸灣、百島嶼
(2)紅磨坊夜總會
(3)餐膳於中國城酒家 (4)獨家安排品瞎
中菲式火焗 馬尼拉住六星之巴拉沙,碧瑶伷凱悅 乘搭國泰,早機去,晚接返
天天出發,可延期返港
4733617--1161|
31336P
備身份 )
代舊新界
(法律性廣告、海携
愛料辭址,撰 ,又號619
、酒店及港澳
租賃
不折不扣,上期散費,
每日下午五時半球稿
首利大厦
(大字四個· 小字
各界來稿惠登,每段 本報分類廣告;歡迎
增計算,長期照計・
多出字數按一個位短
字如超過一個位- 即
-3167633-7352530
0-1718037 12
|永久屋售
方便讀者
菲
$6590
由$7490起
由$6290起 $7190
钢鐵為恒隆中心201宴!忪坜用很止:
5-8907133
£ 30 2018 636241R <72-903—4%
3-325655
[荃灣地鐵站南理中心721 室
54920248 0 4150806
「清邁、曼谷、布吉島九天
$ 5050
「密塘地指紲站寫情溜进下邃137142室
3-7973023
票務專線:3-7302372 3-7356817 星期一至五 朝九晚七辦公 末週日及假期朝九晚五
(2)模型绒 增加成本免費增迦“人妖歌舞表演”: 布吉島住宿兩晚或三晚新行程、任君選擇 乘搭國泰、泰航、天天出發. 可延期返港,
行程種類最多、成本最高
乘國泰、馬航、星航、早去晚返 逢一、
四、五、六出發
「韓國本州迪士尼凡天.
韓國九州八天
由$3580起 韓國溫陽四天、五天 天天出發,回程可停東京、大阪或台北
$7390
菲律賓
馬星泰
北京、西安R
中國
= 400
馬尼拉、碧桃源五天 豪華團
布吉島四天豪華團
北京六天
$2,790
= 0
天天出發
there is
...
馬尼拉、碧桃源、碧瑤 七天豪華團
00) = 0
000 = 0
$3,290
馬尼拉、宿霧五天
逢星期一出發
$3,590 布吉島、曼谷、蔥堤雅七天 豪華團 天天出發: $4,490起 曼谷、華欣、七岩、芭堤雅 八天豪華團 $4,290
逯一、五出發
馬星泰九天
豪華直航團 $ 3,890
天天出發
天天出發
豪華團 $6,190起
逢一、二、五、六出發
北京六天 $ 3.690 直航團
桂林五天豪華直航團
$ 1,890 to 華東七天豪華 直航團
澳門旅游及其他服務
澳門兩天超值 豪華團
每位430 粒
$3.290
天天出發
(Ans - }
豪華團 R
曼谷、華欣、七岩·芭堤雅 $3,350 七天豪華團 $3.990
透二、四、日出發
遙星期日出發
曼谷、華欣、七岩、
菲泰七天豪華團
逢四、六出發
北京五天豪華 直航團 逢星期三、六出發
$3.590
}
芭堤雅
八天豪華團
$.3,990.
"}
逢一、五出發 $4,290
西安、洛陽、鄭州八天 直航豪華團 $3.090
濠三、四、五出發
昆明石林五天豪華 直航團 $2,090 起 逢二、五、六、日出發 海南島五天豪華蕸航團 读一、三、五、六出發$1,690
中山珠海兩天遊 天天出發
.....(3)
$328起
天天出發
【澳門酒店+船票
每位 370 .起
代訂澳門凱悅、文華、藥方
!皇都酒店,請查詢13-7300411
代訂世界各地機票及酒店、 請查詢:3-7350333 獨立包團·請查詢:3-7353438
牌照編號 35001话
星晨旅遊
MorningSho
九龍尖沙阳光砖29-1532年,由廣東出口人, 3-7368268/9JR
•*******@+#1701-3
5-7181612
• JMU 25 TÁL, 2017070-4165473 6* 九瞍彌羚的636个中心170805室旺魚油珧酒 3-320955 847
5-8907733 58
5-8054481 617
• RAKAN NYANGASGASFORMASI TA—(136A141 F 3-4120014
· „90 105 109°14 ¿#† 73-7531203 339172
:0
圖文傳眞
:0
(-20
5-594238
(-5 (Ans.)
· 熱線電話 熱誠服務 ♦
5-462583 5-464459
● 每日下午五點半截稿 •
(告類)
(廣分)
報日僑華
(明)
(HF)
]]]
(廣分)
(告類)
]]
Page 30Page 31