7/28/2019 Chemistry Peka

1/2

sKilff,";

i

ffi;;

jlf:.

,

14+

(

rr

t1,

I

rtlelt.

(

a

n,n,ot

')

i.ri

q,k

boleh,

(

q,tt

|

,tl,,lt

1

Fill in

the blanks with the

correct

words

for the

following:

Isi tempat kosong dengcln

perkataan

yang

betul

bagi

)totlg

beri.ku.t:

(a)

Melting

point

of

the

substancelTalzat

lebur

hahan

(b)

Electrical

conductivity

of

ionic substance#(ehottdu.hsi,an,

elehtri,h hagi

bah.o.n

ion

charges.

r

.

tt.dUlt

,1'tt.l,tt

t

'

ron-Lon

-

tiduh

ti

,-''

ecls-ecls

elektrik..

Zarah-zarah d,itarik

bersama

oleh,

,l 1,,)'

t,y_'j'l:g l

lg_, 8

lgytyy/r,

-

-

bergero,le beba

s

trons

eQ,ll,

move

freely

to carry

electri.:al

charges.

Ion-ion

bergerah

bebas

eas-eds

elektrih,.

substance conduct

electricity?

moleleul

meng

lzondule

s

ilzan

e

d.

s

-

c

a

s

e

I,e k

tr ilz

?

2

(a)

Can

molecular

Dapatlzah

bahan

No

lTidale

ft)

State

one inference

for

2(a).lBerikan

satu inferens

bagi 2(a,).

Molecular

substance

consists

ofl

Bahan molehul

tercl

i.r'i

clari,pad,o.

mol,ecules

lnzolekul

Atomic and ionic

Atom

d,an

ion

Molecule

Molekul

lrr

solid form

I)nlam

bentuk

l,epejaI

Itr

rnolten

(l{quid)

form

l)aiam

betulz

I

nhuran

(cecair)

Does

not conduct

electricity.

Tidak

m,en,gkondrt

ksikan

elektrik,

conducts

electricity.

Mengkondulzsikan

ekktrik

u.ntu.h

nt etn

bausa

unttr,lz m

emhawa

'tl,

_

g.g,h

7/28/2019 Chemistry Peka

2/2

PROBLEM

STATE}'IENT

f

YFor

]{Ests

Can

the

electric

current

flow

through

substances

made

up

of atoms,

molecules

and

Bolehhah

arus elehtrik mengalir

melalui

bahan atom, bahan molehul

d.an

bahan ion?

The

electric

current

can

flow

through

atomic

substances

and in

molten

form

substances

but

not

for molecular

substances.

Arus

elektrih

dapat mengalir

m,elalui

bahan

atom,

dan dalam

kead.aan

leburan

bagi

bahan

tidah

dapat mengalir

rnelalui

bahan

rnolekul.

(a)

that

is kept

constant:

Qu.antity

of

substance

yang

dimalarkan:

-

Kuantiti

bahan

(b)

that is

manipulated:

y

ang ditna,nip

ulasih.an :

Tlpe of

substance

(c)

that

responds:

----

-

Itrlectrical c:onductiuity of

substance

yang

bergerak

balCI,s.'

-

h,ekonduksian

elektrik

bahan

ions?

of ionic'

ion

tetepi

YARIABLES

Jenis bahan

Lead

powder,

sulphur

powder,

lead(Il) bromide

powder

r{/trFBrALs

Serbuk

plumbutn,

serbuk

sttlfur,

serbuk

plumbum(Il)

bromid,a

A PPAR'\TI

JS

Dry cell,

wire,

ammeter,

crucible, carbon

electrodes,

fireclay

triangle,

tripod

burner, spatula, holder, crocodile clips

SeI hering,

wd.ydr,

ammeter,

manghuh

pija4

elehtrod harbon, alas

segi

tiga

tanah

liat,

penunu

Bunsen,

spatula,

pengapit,

klip

buaya

stand,

Bunsen

tungku kaki

tiga,

I

I

Fn ")cFlrt

lrl,E

l

1

Connect dry

cells

to the

wires

which are

connected

at

both

ends

to the

carbon

electrodes with

crocodile clips,

as

shown

in

the

diagram.

Pasangkan

sel-sel

kering

pada

wayar

yang

kedua-

dua

hujungnya disantbung kepada

elektrod

karbon dengan menggunakan klip buaya, seperti

yeng

ditunjukkan

dala

nt

rajah.

Place

a

few

spatulas of

lead

powder

in

the

crucible.

Letakkan

beberapa

spatula

serbuk

plumbu,m

dalam

mangkulz pijar,

Turrr on the switch

and observe the

deflection

of

the

needle on

the

ammeter.

Hiduph,an suis

dan

perhatikan

pemesongan

jarum

pada

ammeten

3

crocodile

clips

klip

buaya

carbon electrodes

elektrod

karbon

crucible

mangkuk

pijar

lreat

panaskan

-

b

ffIfi

J[:li5';:lf#:"jnT:

[?:""",':?'"iHlltr J:,*5,,^

_,

r,

.h

tltnrrr

ffiffi

powdery

substance

serbuk

bahan

Repeat the

experiment using

(a)

sulphur

and

(b)

lead(Il) bromide

powder

Ulang ehsperimen

dengan menggunahan

(a)

serbuk

sulfur

dan

(b)

serbuk

plumbum(Il)

bromida.

Heat the substances

until they

melt

(if

possible)

in the crucible and test their

electrical

conductivity

in

the molten state.

Panashan bahan-bahan

sehingga

lebur

(jika

boleh)

dalarn

manghuh

pi.iar

dan

uji

kekonduhsian

elektrik

dalarn

keadaan lebun

6 Record

your

observations

in

the

table

provided.

Catat

pemerhatian

anda

dalam

jadual

yang

disediahan.