checkpoint sains paper 2
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8/10/2019 Checkpoint SAINS Paper 2
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lltnttrinnltniluiiliilfifiilntttlnl
1
There
are seven
haracteristics
f
l tving
rganisnts.
One
of
these
characteristics
s sensitivity nd
reacting
o the
surroundings.
(a)
Why
s
t mportant
or animals
o be sensitive
o
their
surroundings?
(b)
Ella
and
Mia est
heir
eactions.
Here
s how hey
do
the exPeriment.
Mia
drops
the
ruler.
t1l
Ellacatches
he
ruler etween
er
fingers
nd
humb.
Theydo it againbut his ime
Here
are
heir
esults.
El ladrops he rulerandMiacatchest.
Mia 's humb
Ella's
humb
I
9_r".ur
n.o
i113 t02 la lN14
g,t,i
C z
ep
cg
\ :
a) -
G=
GH
sg
C z
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8/10/2019 Checkpoint SAINS Paper 2
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I iltlr
lrttllrilfr
iiiiiti
tttltlt tlttl
tl
Who has he
aster eaction?
(i)
Complete
he sentence.
ffi
has
he
faster eaction
ecause
t1l
( i i )
Describe
owEllaand
Miacouldmake
heir
esults
more el iable.
t1 l
( i i i )
El la's nd
Mia's r iends
want
o
measure heir
eactions
Mia ells
hem o be careful.
Writedownone
riskor hazard hevshould
nowabout.
t1 l
I
ouc l r szo ta
1*g
X F : I
Kn.,
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u:l
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8/10/2019 Checkpoint SAINS Paper 2
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inlttliilltililfrlfriiiiilililililltilulnllltt
2
Baking
owder
s
used
o
help
akes
ise.
The
chemical
ame
or baking
powder
s
sodium
ydrogencarbonate.
When
heated,
odium
ydrogencarbonate
orms
odium
arbonate,
ater
and
carbon
ioxide.
(a) Writea word equation or thisreaction.
Hld
Cz
e9
rg
Cp
G=
H
E5
E
g8
sl
.9"
cI
f r '
bi;
sl
c|l
bd
f
ffi
f
{
f
' l
il
h
ffi
a]
9i
t)l
rl
9l
R]
H
tr
6r
p:
e,
H
F;
$
F
$J
a
H
r
B
$
G
r
(
u
(
I
'7.
w
tzl
t2l
(b)
The
gas
hat
orms
helps he
cake
o
rise.
Which
of
these
sentences
re
rue?
Put
icks
/)
in
the boxes
next o
the correct
entences.
The
particles
n
gases
are
packed
lose
ogether.
a
The
particles
n
gases
il lal l
he
space
available.
Gases
urn
nto
iquids
when
hey'evaporate.
The
particles
n
gases
move
n random
irections.
n
T
n
T
l,--g-r.,"
o'o
11r /0 : r i
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8/10/2019 Checkpoint SAINS Paper 2
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tzl
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tr
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T
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s482568405
iliililtitiilllllllllllllllllllllllllllllllllllllllllllllll
(c)
Sodium
ydrogencarbonate
s a so l id .
Whichof thesesentences
re
rue?
Put icks
'/)
in
the
boxes
next o the correct
entences.
Solidsdiffuse eryrapidly.
. , ie
par t ic les
n so l idsi l la l l
hespace
vai lab le .
The
particles
n sol ids re
packed
lose ogether.
The
particles
n
solids
ibrate.
[rurn
""g_j
:r..u.
r.,.
ffi
1113io2tottrt14
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nilttlllnnillililfritillililffillillllulllll
3
A student
rows
ots
of
different
lantsn his
garden'
His
plants
re
being
aten
y
nsect
ests'
These
re
some
f
he
pests
e
inds
n
his
garden'
Heuseshis
keY
o
identify
hese
Pests.
KeY
o
insect
Pests
Cydia
Lilioceris
LePtinotarsa
Myzus
q
c
M
A
%
F
#
c1
c i
b' l
p-t
c,l,
FI
ot
di
Ff
gI
c1
pi
9l
et
ifi
9r
f,i
el
e
br
gi
s t
ir;
i
(.:
l-
t.
(
("
has
arge
antennae
and
six
ointed
eg s
'worm
like'bodY
ith
no
antennae
wrng
ases
are
small
or
absent
wings
are
covered
by
arge
wingcases
smooth
segmentecl
body
with
no hairs
segmented
odY
covered
n
hairs
long
body
with
curved
ail
pieces
rounded
odY
with
straight
ail
Pieces
wing
cases
ar e
not
patterned
kr. t t t
rot .
1113i02/o/f'.1/
1
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8/10/2019 Checkpoint SAINS Paper 2
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H
+ F \ ^
U t g
mat(
' s
A '
tcts
iliiriilil||iill
(a)
(b)
^ ^ + ^
r u 5
t 5 .
e
nan
in he
letter
you
c
the
F in
S I X
:h
tf
t oF
l
I
I
l
I
T
l
that
names
pest
hen
l3l
letter.orrect
of
h its
ram
th
wit
rces.
d iag
pest
$
space
'
thedia
ch
eacn
empty
ee
on
of
i x t
can
me
F q
E A A
the et
es
of ir
name
of
pest
letter
"r*_
forficula
leptinotarsa
lilioceris
myzus
pieris
t2)
:'
:i
.--:r
r ' ]-ss
or.r
ff i
11
3i02lo/N/1{
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ovei
I
4
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8/10/2019 Checkpoint SAINS Paper 2
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ttttililfifi
iililiiflttt
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ttr
ltt
4 Sofia
heats
water
n a
Pan.
( a) Na me
the
thermal
heat)
energy
ransfer
processbeing
shown
by
the
diagram.
arrows
on
the
t1 l
9]t
z
tg
c5
L :
(r
ez
GF
g
E
GIR
gl
c"l
ai
6i
ffi
el
@1
H
ffi
GI
trl
el
K\-,
|{,'t
ffi
H
f
ffi
ff
H
H
r
G
u
H
G
d
ir
G
H
o
a
s
G
r
c
6
$
s
"G
s
e
e
(
c
t
(
(
(
i
t
(
I
tzl
(b)
i , ' 1
Complete
he
sentences.
Choose
rom
he
ollowing
ords.
cooler
does
not
move
hotter
rises
sinks
The hot
water
rom
he
bottom
of the
pan
water
at the
op
of the
Pan.
1,,,,"?,".,''o'o
1113i 02/O;'li/'1
1
.t
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8/10/2019 Checkpoint SAINS Paper 2
8/15
E
l2l
S?
t1 l
I1 l
t1l
m into
hree
solutions.
llilllllllll
c
I
, -=uc
l*-
' 5 4 8 2 5 5 8 4 C 9
illlllllllllllllilllllllilliiilltiiililillililile
Charl ie ndEmma
make nd icatorss ing
r imula
They ake hree
differenl oloured
petals
and dip
t
Their
esults re
shown n
the able.
flower
petals.
hem nto
solutions ith
different
Hs.
makean
ndicatoro test or
acids
and alkal i
put
he
(a)
(i)
Whichcolour
etals
ouldnot
be used o
(i i)
Which
olour
etals
ouldbe used
o tesl
(b)
The red
petals
re
put
ntoa
solution
f citr ic
Predict he colourof the
petals.
(c)
Charl ie nd Emmaused he
purple
etals
n
Completehe able.
LES2011
F" l f i
1113 i12 to i
lj}
1 4
I I r i r r i
ove r
i
*-"J
colour of f lower
petals
colour n solut ion
of
pH2
colour n so lu t ion
of
pH7
colour n so lu t ion
of
pHl
1
purple
pink
purple
blue
red
red
reo
green
yellow yellow yellow
yellow
solut ion
colour
of
purplepetals
when added
o
solution
salt
olution
lemon
uice
vinegar
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8/10/2019 Checkpoint SAINS Paper 2
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Iuril
lur
tttilffilfriliiliilm
tuttnttl
tl l
tt
A teacher
ses
an osci l loscope.
10
cr
Cz
c3
c:
Cc
i l
c=
IH
(
gr
c:
6s
F]
ei
F,I
S
g ,
bi
iti
c,
pri
cx
0:
el
Oi
iid
r}J
y.$
e
u
bi
H
H
g
$
gl
$i
e
U
c
u
u
u
fT
a
a
c
p
g
s
G
$
g
s
H
g
6
G
d
I
s
p.
c
c
c
c
f
{
f
H
l1 l
l1 l
t1 l
I1 l
She
makes
ourdifferent
ounds,
,
B,
C and
D.
She
hows
erclass
hese
ounds
n
he
oscilloscope
Which
ound
s he
quietest?
Circlehecorrect nswer.
c
Which
one
of the
ollowing
makes
ound
quieter?
Tick
(r')
the
correct
nswer.
D
D
(br
T
n
D
(d)
n
n
'fl-
'.
r.ru.
roto
/ /
\
\
I
t
\
\
I
I
A
n
A
\
\
I
\
\
\ l
V
\
\j
increasinghe requencY | |
increasing
heamPlitude
I I
(c)
Which
sound
has
he
lowest
pitch?
.",,'cie
he correct
nswer.
increasing
he
frequencY
increasing
he amplitude
decreasing
he
frequencY
decreasing
he
amPlitude
decreasing
he
requencY
decreasing
he
amPlitude
Which
one
of
the
ollowing
ecreases
he
pitch of a sound?
Tick
(z;
the
cprrect
nswer.
T
n
1
1
3102/0 /N/14
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8/10/2019 Checkpoint SAINS Paper 2
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' 5 4 8 2 5 6 8 4 1
1
I iiiti
liltiill
ltililllllllllllllltill
fililltlll
7 Camels
ive n desert
ab i ta ts .
L:r.rrr
ro,o
M
1
Deserts
reveryhot
and dry.
Winds
blow he sandaround.
Camels
avespecial daptationso thishabitat.
Describe
oweachadaptationhown
n
hedrawings elowhelps
he camel.
\Nrite
your
answers
n he
boxes.
The irstone
hasbeendone or
vou.
Large
hick
ipsso hecamelcaneat
prickly
plants
without
hurting tself.
Large yelashes
Nostri ls
hat
close
Wide
eet
Fat
i l led
umP
i',
Lt:4.r
Fe{
f i
1310'2iAl l i l14
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c,, 'er
I
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illliillllllltililllll
lllllilllllillllillllllllil
lllllll
n
I
Ceri
laces
n
ron
nail
n copper
ulfate
olution'
The
nail
becomes
overed
n a brown
olid.
rR
ig
iron
nail
:he
brown
olid
s an
element.
What
s
the
nameof
this element?
(b)
Ceri
places
piece
f si lver
nto
opper
ulfate
olution.
There
s
no
reaction.
Explain
hy here
s
no eaction.
l1 l
^ l
C=
d
.
Ce.
r I
r Z
CH
cg
Cx
cz
c9el
9;t
9r
c'
.cl
al
gJ
c"t
9-t
g
9J
gl
Q'l
G. l
gil
sn
9J
ffi
ffi
GJ
ffi
G I
e,i
c l
di
J
p.l
g1
bI
el
1^-I
v
c;
a l
YJ
Cl
0i
bx
bl
SJ
,c"J
9l
"q;
;
G
Ol
Pi
p;
gi
a:
c:
v;
n'
C
C
L
C,
( .
l1 l
(c)
Ceri
places
piece
f
copper
nto
silver
itrate
olution
This
ime
here
sa
displacement
eaction.
Complete
he
word quation
or he
displacement
eaction'
copper
+
silver
nitrate
-r
t1l
ii
I
o t - ,cLeszotq
&*.-,,"
i
I i . i r 02 rC r l l i
4
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8/10/2019 Checkpoint SAINS Paper 2
12/15
E
3
I
iirri
ltttl
lilniiliiilnil
uru
tl
t
9
The
Earth s alwaYs
moving
(a)
Look
at the
diagram.
The
movement
f the
Earth
auses he apparent
ai ly
movement
f
the Sunand
stars.
Complete
he
sentences.
The
Earth
on tsownaxis.
, ' l
At
any
ime,
half
he
Earth s n
Look
althe
diagram.
and
half he
Earth
s n
.
I2l
[TL:rn
over
iu
6ffii*a
The
Earth
akes
around
he
Sun.
days
o
do his.
l2l
t-.rr.
ro,o
@
1r'
Sun
@
-tF
---@-
The
movement
f
the Earth auses
he
apparent
nnual
(yearly)
movement
f the
Sun and
stars.
Complete
he sentences.
The
Earth
I t s ; } :
G+r j
iC
1113l02lol"
'' 4
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lllllillill
lffiilI|
lil
lllullilllllllllltlllil
illlll
M
1ti
,-ci lpv
o
preparingbeans
on
toast.
The
label
^n
his
t in
of beans
shows
this
information.
g l
=
cp
cg
(o o
7T .
L F
a z
H
$5
Fx
c>
$8
P*
EI
el
c'
br
eri
CIi
9r:
&i
$c
p.g
cI
i:d
s*
ed
uI
6ii
bI
ffi
Ei
gr
c l
Qti
8
cl
CI
Url
ql
e l
Ci
c l
e l
P.l
9.1
0,i
iii
e.j
ffi
each
200g
serving
of beans
contains
%
GDA
energy
588kJ
7%
sugar
11 .89
13%
fat
(saturated)
0.6
g
2%
'rt
(unsaturated)
0.6
1%
salt
1 .9g
31%
GDA
=
guidel ine
daily
amount
(a) Use
he
nformation
o calculate
he
guidel ine ai ly
amount
GDA)of
saturated
at.
u ,
, v . ,
, -U f
WOfk ing .
GDA
of
saturated
at
. .--..
. . . . . . . . . .
l2l
(b)
The
nformation
n
the can
of
beans
ncludes
nly
some
of
the
nutrients
eeded
or
a
balanced
iet.
^crrr;c
ne
nutrient
hich
s
missing
rom
he
abel
and
describe
ow
t is
used
n the
human
body.
Name
f
nutrient
How
t s
used
.'
t2l
E
1113 /0 : i ( ) , /N / f
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8/10/2019 Checkpoint SAINS Paper 2
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' 5 4 8 2 5 6 8 4 1 5
i
iil||
liillilililfi
lilt
lilt
ilt
lil
lilt
liltllltl
15
11 Here
s
some
of
the
apparatus
heena ses
o make
he
salt
calcium
hlorioe.
glass
od
acid
and
calcium
beaker
carhonate
Sheena ixes
n
acid
with
alcium
arbonate
n hebeaker.
Themixture
izzes.
C:lcleheacid
he
uses
o make
alcium
hloride.
acetic
acid
hydrochloric
acid
nitr ic
acid
sulfuric
acid
12
f
,ere
s
a diagram
f a l i thium
tom.
- - o - -
\
\
\
(crl
the atom
has
hree
protons.
State
he number
of neutrons
n the
atom.
(b)
Write
down
he
chemical
ymbolfor
i thir"rm.
t11
I
I
t
I
t
t l
t l
O t
t1 l
rl
t
: , . ,
N
g
- . , L E J Z U I J
I
**
1 i 1 3 i A Z i O t i l l i l
Iiurn
r3*fi
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8/10/2019 Checkpoint SAINS Paper 2
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' 5482568416
lllilllllillillilllillllillilllllillllil
illlill
llllll
1
13
Kaito
s a technician
n a
laboratory.
He
does
an experiment
o
find
how he
density
f
water
hanges
ith emperature.
density=mass+volume
To find hedensity,Kaito illsa 250cm3containerwithwater.
(a)
(i)
What
other
measurement
ill
Kaitoneed
o
work out
he
density
of
the water?
\
t1l
( i i)
What
iece
f
equipment
ould
e
use o
make
his
measurement?
t1l
(b)
Kaito inds hedensity f water t ourdifferentemperatures'
Whatapparatus
ill
Kaitouse
o measure
he
emperature?
t1I
cl
C z
.L 9
l d
cg
Cq.
CT
c=
iH
$g
IF
c>
GR
b;
F:t
"ct
l
Ot
R$
err
br,
Hd
8
l
ln
0r
6t
f
fiI
${
cjl
ct
ci
c l
0i
PI
c l
itl
oi
sl
9i
al
ct
iil
cl
pI
c1
b'l
FI
c,
F,j
O'j
ii
G;
F':
c:
H
a,
b
r
e
r'
(c)
Here
re
Kaito's
esults.
Describe
he
pattern
hown
y
Kaito's
esults
temperature
n
oG
density
n mg/cm3
4
1000
20
998
40
992
60
983
t1l
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l"d
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C : : l r : i . c e
i ' : t t - i ' a . i '
; r l ' l r i l i l ' l . : , 1
: r ' , ( r :
"
a - ' :
- ' r , r : '
; '
1 ' : r
;
C : : : l - r ' ' : : ' : " 1 '
1 ;
: : l " l
I
c : , a . .
, l . l ' r a : ;
5 J r , r i , a , i l ' ' : ,1 . , ; L l : - i , ) ,
r i ' l i l ' i s
i i : r i , 3 d a ;
, i i i l i r i ' i c i
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l ' i ' i ' : r : :
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C : n l l
i '
top related