真二第張六第日十初月正年酉己瑟夏 WAH KIU YAT PO.
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三期星二日六廿月二年九六九一曆公年八十五國民華中 育 教僑華
上九九中学入学部の題預習
Me
顯履
文中學會考試題預習
Cold water: very slow
aven if the metal
英文科
(十七)
劉士俊
化學科
(十六) 王道
Le in the schwader Comm
Steam: burn
Normally protected
by surface film of oxide.
Steam: fairly fast Steant reversible:
Moderate reaction giving off hydrogen, the action becoming gradually slower from magnesium to irani
Put a tick (V) against the word or group of words which beat.comnletes each sentence
gets
(a) Soɑnatne sun
- is setting
will set
I has settea
STOLEN
had been stealing
myring.
was being stolen
has stolen
has started Btarta
*Theitram
will start
at seven o'clock
has been started
CHEMISTRY (16)
The chemical reactions which take place in a blast furnace in the production of pig iron from iron ore might be summed up as follows.
(1) The oxygen in the air blast combines with the
coke in the hottest part of the furnace forming garbon monoxide.
2002 200
(ii) This carbon monoxide rises and reduces the iron
oxides to iron
Fe202 *300
гозой
LCO
3002
LGO
every morning.
"Gone With "me,!
To come with me
(d)incoming with me
"Cane with me.”
[e) which
ara
shali
„said the policeman.
DUGLUTATñas one or that
WAB
19
oner
does she live-
did she live
-11ve yeaSH ALOT
was she ved were ahe living
fæ) Re didn't do it.
does did didn't
(h). What is the
(1).One haraly
was known knows
TAB
four o'clock.
shall be will be
what to do.
is known
has known
(i) He made me
going go gone
∙to go
home
In each of the following put a tiek (against the word which best completes the meaning of the passage,
People may enjoy
himself itself. themselves herself
if they
go I18ninÁT
et with
to
rod and lina, buz
method'
Tay road
or catening
Üne oan
thing
within
caten only one
time.
It 18 muon
slower
quickly
to use nets. and Th18 15.
quicker best
what how Way"
fishermen do when they
in out off
in. boata
len in the sea;
Soretimea 80.
more, much many. most
Brian
get into the net that
opena breaks broken opened
and then
and sometimes the fishermeni
They all
come
ಕಲಿ such( all
a lot of Tian that they can't
mich
buy
take.
Bell
them all and they have to
give
throw give
Ret
bring
then back into the sea
Write the missing woras in the Diank spaces. Examples: 1'm a teacher, am 1 not? Yes, you are a
It's hot to-day, isn't it? Yes, it is.
(a) We've finished it,
? Yes, you've.
(b) She isn't very thin, is she? No,
(0) They like riding.
When the Limestone is heated to a temperature. above 550°C, it decomposes to form quicklime and barbon dioxide, most of which is reduced by the hot coke to form more carbon monoxide, which in turn reduces more iron ore to iran.
JCU2
cao 60,
C- 200
(iv) une quicklime reacts with une sand unu vuner
earthy material in the ore to form the molten slag, calcium silicate, which floats on the surface of the molten iron.:
Cão
$10
Ca$103
When a stream of dry chlorine gas is passed over some hot wire in a combustion tube, the wire glows and black crystals of ferric chloride are collected in the cooler parts or the tuba.
2F0 3012
2FeCl3
(The valency or iron in ferric chloride =
(b) Iron dissolves readily in cold dilute
sulphuric acid. Iffervescence occurs and hydrogen gas is evolved, Ferrous sulphate remins as a pale green solution.
Te
H2SO - FeSO, • H2f
(The valency of iron in ferrous suzma të.
∙2)
Iron does not react with cold, concentrated sulphuric acid, but it will reduce the hot concentrated acid to sulphur dioxide,
In order for iron to rust, air (oxygen), water and carbon dioxide are essential. When iron rusts, ferrous carbonate is probably formed at first..
Fe H20 002 = FeCO3 + H2
The ferrous carbonate is then probably oxidised by the air to ferric carbonate,
4FeC02 + 02 + 2002 2Fe2(CO3)
The ferric carbonate is finally hydrolysed iron rust...
2Fe2(CO3)3 3H20 280202.3820 60021
When old rust is analysed, it is shown to hydrated ferric oxide,
2. (a) The metals arranged in their correct order are.
potassium, sodium, calcium, magnesium, aluminium, zinc, iron, lead, copper.
(1)
Action of water on
metal
Cold water: violet
flaze
Cold water: rast Cold water: slow
Action of dilute hydrochloric acid on metal.
Violent reaction: ziving off hydrogen.
David Brown 18 now seventeen. He ne.g been at the Bishopton Grammar School for six years, since he was eleven. Now he is at the top of tha school, studying English and Languages. He he- worked hard during the past two years and the masters at the school think very well of him. Now, if he passes his examinations, he will go to a university where he will be a student for three or four years. He hopes to go to Oxford nevt October, at the beginning of the new term.
Last week David went to Oxford to take an entrance examination at one of the colleges, out he does not know yet whether he has passed. Thile he was in Oxford he was walking down the High Street, the most important street in Oxford, when he met a school-friend, whose name is Geoffrey. Dixon, Geoffrey Dixon went to Oxford last year. He showed David all the interesting places and, told him aboutlife in college.
Here are ten sentences about the passage. Some of them are true and some are untrue. Put a tick against the ones that are true.
a) David 18 now at the Bishopton Grammar School,
? Yes, they do.
b) He is a very lazy student,
(a) we are living in Hong Kong now, aren't
Yes,
(e) He is going to London tomorrow
Yes, he is.
4. Read the following passege Carefully
માં
His teacher's like him very much.
He will not go to a university next year.
He took an entrance examination at a colle last week.
(
He passed the entrance examinatión”,
The High Street is the most important street in
Fe
Na
Metals unaffected
hy pure water or steam
Action with
mxxygen
Burn brilliantly
in oxygen
giving a mixture
Exceedingly glow action with the concentrated acid giving off hydrogen
No action with. hydrochloric acid: hydrogen not given off!
Stability of
oxide's
of the peroxide Not reducea and the monoxide! even by
Ca Burn brilliantly
in oxygen forming the
His oxida
Al Burns brilliantl
de the metal is
heated sufficientAY 20
a finely divided condition
Burrs with a bluish white.
flame when he heated to over 1000°C.
If finely
divided burns
vorously
giving off
carbon
Reduced by carbon but
not hydrogen
peculiar branched reduction.
gparks
Reduced by
hydrogen,
becoming more
rapid from
Fe to Gu
Fo
Do not burn
Cu
heated metal
gradually
converted to the
oxide
Solubility of Carbonates
K
Na
Soluble -in. water
Ca
3213223
Solubility of Hydroxides
Very soluble
in water
Sparingly soluble in water
Insoluble an water
Action of heat Action of heat on carbonates on nitrates
Not decomposed by Decompose to heat
Decomposed by heat to give the
insoluble in axide of the metal
and carbon
dioxide
e.g. Caco
+ CO2 Carbonates:
decompose more easily from Ca to Ch
give the nitrite
and oxygen
9.g. 2KNO
2KNO2+
Decomposed by
heat to give the oxide of
the ustal. nitrogen dioxide and. oxygen
e.g. 2Pb(NO3)2 2PbQ+LNO2+02 Nitrates:
decompose more easily from Ca
to Cu.
Zn
wate)
Fe
Ca
Questions for next week (17)
Next week we shall look into a number or multiple choice questions covering the course in general.
Oxford.)
(h) Geoffrey is his good friena
Geoffrey in his school-friend. ( Geoffrey is now at a college in Oxford.
Underline the correct word in the brackets
word
(a) our aide (beat, won the other team. (b) He(took, brought) my books here this morning. His later always (ware, dressed) quickly. (a) I am (feared, frightened) of this man- (e) He (burned, fired) all his papers. (f) She (told, talked) some stories, (g) He did not answer, reply) to me when spoke. (h) She cannot (cure. recover), from this disease.
Answers to Test 16
(a) 100, 2. A, 3. B, (b) 1. D, 2. B, 3.0, 4. A (c) 1.0, 2. B, 3. D. 4. A, (d) 1. D. A,
4. B, (e) 1. B, 2. D, 3., 4. C.
2. (a) if, (b) which, (c) which, (d) when, (e) and
• (1) for, (g) which, (h)
but,
(1) As soon as.
(a) Eow do you do? (b) No, not yet. (c) Oh, it's
a good idea. (4) Yes, they are, (e) I am going to play with Joan,
4. (a) Is the lady going to sing for us?
(b) Are they playing football in the fielar
(c) Did the manager buy any goods?
(d) Shall we pay your aunt a visit?
(e) Is he found in the forest?
5. (a), (b), (d), (g), (1), (3).
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