what happens when materials are heated or cooled? what are ... class: date: states of matter:...

Name: Class: Date:

States of Matter: Melting and Freezing

Consolidation Worksheet 1What Happens When Materials Are Heated or Cooled?What Are Permanent and Temporary Changes?What Happens When Solids and Liquids Are Heated or Cooled?

Fill in the blanks with the words provided in the box below.

Freezing

Melting

Permanent

State

Substance

Temporary

1. When paper burns to become ash, the change is .

2. When plastic burns, a new is formed.

3. is a process by which a solid changes into a liquid.

4. Liquid wax is in a different from solid wax.

5. is a process by which a liquid changes into a solid.

6. A change is when no new substances are formed.

© 2012 Alston Publishing House Pte Ltd Science SMART Teacher’s Guide Grade 4 285

Fill in the blanks in the table below by identifying the process that is taking place and stating whether the change is temporary or permanent.

Process What process is taking place?

Temporary or permanent?

286 © 2012 Alston Publishing House Pte LtdAdditional Teacher’s Resources

Name: Class: Date:

Fun and Games


What’s the Word?

Complete the grid below using the words in the box. Two letters have been filled in for you.

FreezingPermanent

LiquidsSolids

MeltingTemporary

N

M

a. The shaded word will spell out the physical conditions in which matter can exist.

The word is .

b. Unscramble the letters in the boxes outlined in blue. You will find a word meaning the matter from which a thing is or can be made.

The word is .


Name: Class: Date:

Exam Practice


Process skills: Observing, Contrasting, Inferring

Rita wanted to test which substance, ice or butter, has a higher melting point. She placed a cube of butter and a cube of ice on wooden trays as shown below.

After 30 minutes, Rita observed the following.

a. Based on her observation, which substance has a higher melting point? [1 mark] b. State two things that Rita must keep the same in order to make it a

fair test. [2 marks]

Hint:Which of the substances melted

first? Which of them melted later?


Ans

wer

s to

Add

ition

al T

each

er’s

Res

ourc

esA

nsw

ers

to A

dditi

onal

Tea

cher

’s R

esou

rces

Name: Class: Date:

Exam Practice


Process skills: Observing, Contrasting, Inferring

Rita wanted to test which substance, ice or butter, has a higher melting point. She placed a cube of butter and a cube of ice on wooden trays as shown below.

After 30 minutes, Rita observed the following.

a. Based on her observation, which substance has a higher melting point? [1 mark] b. State two things that Rita must keep the same in order to make it a

fair test. [2 marks]

Hint:Which of the substances melted

first? Which of them melted later?

Fill i

n th

e bl

anks

in th

e ta

ble

belo

w b

y id

entif

ying

the

proc

ess

that

is

taki

ng p

lace

and

sta

ting

whe

ther

the

chan

ge is

tem

pora

ry o

r pe

rman

ent. Pr

oces

sW

hat p

roce

ss is

ta

king

pla

ce?

Tem

pora

ry o

r pe

rman

ent?

Mel

ting

Tem

pora

ry

Free

zing

Tem

pora

ry

Mel

ting

Tem

pora

ry

Burn

ing

Perm

anen

t

Nam

e:

C

lass

:

Dat

e:

Sta

tes

of

Mat

ter:

Mel

tin

g an

d F

reez

ing

Co

nso

lid

atio

n W

ork

shee

t 1W

hat

Happen

s W

hen

Mate

rials

Are

Hea

ted

or C

oole

d?

Wha

t A

re P

erm

ane

nt a

nd T

empor

ary

Cha

nges

?W

hat

Happen

s W

hen

Solid

s and

Liq

uids

Are

H

eate

d o

r Co

oled

?

Fill i

n th

e bl

anks

with

the

wor

ds p

rovi

ded

in th

e bo

x be

low

.

Free

zing

Mel

ting

Perm

anen

t

Stat

e

Subs

tanc

e

Tem

pora

ry

1. W

hen

pape

r bu

rns

to b

ecom

e as

h, th

e ch

ange

is

.

2.

Whe

n pl

astic

bur

ns, a

new

is

form

ed.

3.

is a

pro

cess

by

whi

ch a

sol

id c

hang

es in

to a

liqu

id.

4.

Liqui

d w

ax is

in a

diff

eren

t fr

om s

olid

wax

.

5.

is a

pro

cess

by

whi

ch a

liqu

id c

hang

es in

to a

sol

id.

6.

A c

hang

e is

whe

n no

new

sub

stan

ces

are

form

ed.

perm

anen

t

subs

tanc

e

Mel

ting

Free

zing

tem

pora

ry

stat

e


Sta

tes

of

Ma

tter

: M

elti

ng

an

d F

reez

ing

Ans

wer

s to

Add

ition

al T

each

er’s

Res

ourc

esA

nsw

ers

to A

dditi

onal

Tea

cher

’s R

esou

rces

Nam

e:

C

lass

:

Dat

e:

Ex

am P

ract

ice

Sta

tes

of

Mat

ter:

Mel

tin

g an

d F

reez

ing

Pro

cess

sk

ills

: Obs

ervi

ng, C

ontr

astin

g, I

nfer

ring

Rita

wan

ted

to te

st w

hich

sub

stan

ce, i

ce o

r bu

tter,

has

a hi

gher

mel

ting

poin

t. Sh

e pl

aced

a c

ube

of b

utte

r an

d a

cube

of i

ce o

n w

oode

n tr

ays

as s

how

n be

low

.

Afte

r 30

min

utes

, Rita

obs

erve

d th

e fo

llow

ing.

a.

Base

d on

her

obs

erva

tion,

whi

ch s

ubst

ance

ha

s a

high

er m

eltin

g po

int?

[1

mar

k] b.

St

ate

two

thin

gs th

at R

ita m

ust k

eep

the

sam

e in

ord

er to

mak

e it

a

fair

test

.

[2 m

arks

]

Hin

t:W

hich

of

the

subs

tanc

es m

elte

d fi

rst?

Whi

ch o

f th

em m

elte

d la

ter?

Butte

r

1. Th

e cu

be o

f ice

and

the

cube

of b

utte

r m

ust b

e of

the

sam

e siz

e.

2. T

he tw

o cu

bes

mus

t be

kept

in th

e sa

me

plac

e.

(Acc

ept a

ll po

ssib

le a

nsw

ers.)

Nam

e:

C

lass

:

Dat

e:

Fu

n a

nd

G

ames

Sta

tes

of

Mat

ter:

Mel

tin

g an

d F

reez

ing

Wh

at’s

th

e W

ord

?

Com

plet

e th

e gr

id b

elow

usin

g th

e w

ords

in th

e bo

x. Tw

o le

tters

hav

e be

en fi

lled

in fo

r yo

u.

Free

zing

Perm

anen

tLi

quid

sSo

lids

Mel

ting

Tem

pora

ry

N

M

a.

The

shad

ed w

ord

will

spel

l out

the

phys

ical

con

ditio

ns in

whi

ch

mat

ter

can

exist

.

Th

e w

ord

is

.

b.

Unsc

ram

ble

the

lette

rs in

the

boxe

s ou

tline

d in

blu

e. Y

ou w

ill fin

d a

wor

d m

eani

ng th

e m

atte

r fr

om w

hich

a th

ing

is or

can

be

mad

e.

Th

e w

ord

is

.

LI

QU

ID

S

ME

LT

IG

TE

PO

RA

RY

PE

RM

AN

EN

T

FR

EE

ZI

NG

SO

LI

DS

S MA

TE

RI

AL

TA

TE

S


Ch

ap

ter 5

Glossary

Chapter 5: States of Matter: Melting and Freezing

Freezing The process by which a liquid changes into a solid

Freezing point The temperature at which a liquid freezes

Melting The process by which a solid changes into a liquid

Melting point The temperature at which a solid melts

Permanent Not temporary; unchanging

Substance A certain kind of material

State Being a solid, liquid or gas

Temporary Not permanent; existing for a limited period of time


Sta

tes

of

Ma

tter

: M

elti

ng

an

d F

reez

ing

what happens when materials are heated or cooled? what are ... class: date: states of matter:...

Documents