Ch6 Matter of States 1 Oxf

8/22/2019 Ch6 Matter of States 1 Oxf

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1

Hot pot Hot pot is verypopular in winter.


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2

1 Why is there lessand less soup when it

keeps boiling?


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2 If we put a lid on the pot,the lid will make a clinking

sound when the soup

is boiling. Why?


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3When we add meatballsand vegetables into the

soup, meatballs sink

but vegetables float.

Why?


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4 Why do meatballsfloat after they are

done?


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6

Matter6.

1

6.1 Matter


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7

Matter

6.1 Matter

Do you know what

matter() is?


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Matter

6.1 Matter

Matter is anything

which has mass and

takes up space.


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Matter

6.1 Matter

trees

basketball

cloud

air

Examples of matter


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Matter

6.1 Matter

sound

light

heat

Examples of non-matter


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The three states of matter

6.1 Matter

states of matter

()

solid ()liquid ()

gas ()


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6.1 Matter

pot

water

steam

gas

solid

liquid


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136.1 Matter

6.1

Identifying the three states of matter

helium

oil

guitar

ice

alcohol

steam

sand

town gaswater

wooden

cube

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146.1 Matter

6.1

Solid Liquid Gas

guitar, ice,

sand,wooden

cube

oil, alcohol,

water

helium,

steam,town gas

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The three states of matter are__________, __________ and

__________.


solid liquidgas

6.1 Matter

16


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Properties of solids, liquids

and gases

6.1 Matter

Lets study their

properties in thefollowing activity.

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http://localhost/var/www/apps/conversion/tmp/scratch_7/expt_video0601_e.wmv


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176.1 Matter

Comparing the properties of solids,liquids and gases

6.1 Experimentvideo

I Properties of solids

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http://localhost/var/www/apps/conversion/tmp/scratch_7/expt_video0601_e.wmvhttp://localhost/var/www/apps/conversion/tmp/scratch_7/expt_video0601_e.wmvhttp://localhost/var/www/apps/conversion/tmp/scratch_7/expt_video0601_e.wmvhttp://localhost/var/www/apps/conversion/tmp/scratch_7/expt_video0601_e.wmvhttp://localhost/var/www/apps/conversion/tmp/scratch_7/expt_video0601_e.wmv


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186.1 Matter

6.1

1 Press as hard as you can.

wooden cube

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196.1 Matter

a Does the shape of the

cube change?

No.

6.1

wooden cube

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206.1 Matter

b Does the volume of the

cube change?

No.

6.1

wooden cube

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21

Solids have fixed _________and _________.

shapevolume

6.1 Matter

6.1

22


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226.1 Matter

6.1

II Properties of liquids

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236.1 Matter

2

6.1

syringe

water

25 cm3 ofwater

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246.1 Matter

3

6.1

cap

plungerpush

256 1 M tt


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Does the volume of the water

change?

6.1 Matter

3

6.1

No.

266 1 M tt


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266.1 Matter

4

6.1

200 cm3

of water

276 1 M tt


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a Does the shape of the water

change?

6.1 Matter

6.1

Yes.

286 1 M tt


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86.1 Matter

b

6.1

296 1 Matter


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Does the volume of water the same

as before?

6.1 Matter

6.1

Yes.

b

306 1 Matter


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6.1 Matter

6.1

Liquids have fixed ________

but no fixed ________. Theytake up the shapes of the

containers.

shape

volume

316 1 Matter


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6.1 Matter

6.1

III Properties of gases

326 1 Matter


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6.1 Matter

5

6.1

pull to fill 25 cm3

of air

336 1 Matter


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6.1 Matter

5

6.1

cap

346 1 Matter


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6.1 Matter

5

6.1

What is the shape of the air in the

syringe?

It takes the shape of the syringe.

356 1 Matter


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6.1 Matter

6

6.1

push

366 1 Matter


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Does the volume of the air change?

6.1 Matter

6

6.1

Yes.

376 1 Matter


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6.1 Matter

7

6.1

pull to fill another

25 cm3 of air

386.1 Matter


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6.1 Matter

7

6.1

balloon

396.1 Matter


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6.1 Matter

8

6.1

balloon

push

406.1 Matter


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Does the shape of the air change?

6.1 Matter

8

6.1

Yes.

416.1 Matter


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6.1

Gases _____________ fixed

volume and shape. They takeup the volumes and the shapes

of the closed containers.

do not have

426.1 Matter


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Change of states

After taking out from a freezer

ice liquid water

436.1 Matter


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Change of states

Putting a lid on a pot with boiling water

steam liquid water

446.1 Matter
http://localhost/var/www/apps/conversion/tmp/scratch_7/expt_video0602_e.wmv


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Observing the change of states ofwater

6.2 Experimentvideo

I Melting

456.1 Matter
http://localhost/var/www/apps/conversion/tmp/scratch_7/expt_video0602_e.wmvhttp://localhost/var/www/apps/conversion/tmp/scratch_7/expt_video0602_e.wmvhttp://localhost/var/www/apps/conversion/tmp/scratch_7/expt_video0602_e.wmvhttp://localhost/var/www/apps/conversion/tmp/scratch_7/expt_video0602_e.wmvhttp://localhost/var/www/apps/conversion/tmp/scratch_7/expt_video0602_e.wmv


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6.2

1 Put some crushed ice into afunnel.

466.1 Matter


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6.2

2 thermometer

crushed icefunnel

476.1 Matter


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6.2

3 Record the temperature of the iceevery half minute for 5 minutes.

Time (min) 0 0.5 1

Temperature (C)

Does the ice turn

into liquid water?

486.1 Matter


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6.2

3 At what temperature does the iceturn to liquid water?

About 0 C.

496.1 Matter


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6.2

4 Plot the temperature of the iceagainst time in a piece of graph

paper.

506.1 Matter


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Does the temperature change whenthe ice melts?

6.2

4

No.

516.1 Matter


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6.2

Melting () is the processin which a substance changes

from solid into liquid state.

526.1 Matter


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6.2

When ice is heated to a fixed

temperature, it melts and

turns to _____________.This temperature is called the

melting point () of ice.The melting point of ice is

______.0

liquid water

536.1 Matter


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6.2

II Boiling

546.1 Matter


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6.2

5thermometer

100 cm3 of water

heat with Bunsenburner

556.1 Matter


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6.2

6 Record the temperature of waterevery half minute for 5 minutes.

Time (min) 0 0.5 1

Temperature (C)

Does the water

turn to steam?

566.1 Matter


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6.2

6 At what temperature does the waterturn to steam?

About 100 C.

576.1 Matter


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6.2

7 Plot the temperature of the wateragainst time in a piece of graph

paper.

586.1 Matter


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Does the temperature change whenthe water boils?

6.2

7

No.

596.1 Matter


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6.2

Boiling () is the processin which a substance changes

from liquid into gas state.

606.1 Matter


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6.2

When water is heated to a fixed

temperature, it boils and turns to

________.This temperature is called the

boiling point () of water.The boiling point of water is

________.100

steam

616.1 Matter


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6.2

III Condensation

626.1 Matter


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6.2

8

100 cm

3

of water

heat until thewater boils

636.1 Matter


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6.2

9

mirror to catch

the steam

646.1 Matter


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6.2

9 What do you observe on the mirror?

Steam condenses on the mirror to

form water droplets.

656.1 Matter


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6.2

Condensation () is theprocess in which a substancechanges from gas into liquid

state.

666.1 Matter


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Change of states

Freezing ()

liquid statecooled to a

fixed temperature

solid state

freezing point ()

676.1 Matter


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Change of states

solid gasliquid

temperature increases

temperature decreases

melting

freezing

boiling

condensation

686.1 Matter


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Change of states

For the same substance,

melting

freezing

solid liquid

same temperature

696.1 Matter


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Change of states

Different substances

have different melting

points and boilingpoints.

706.1 Matter


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Change of states

Meltingpoint

Boilingpoint

State at roomtemperature

Tungsten 3422

C 5555

C solid

filament

716.1 Matter


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Change of states

Meltingpoint

Boilingpoint


iron

Iron 1538C 2861

C solid

726.1 Matter


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Change of states

Meltingpoint

Boilingpoint


mercury

Mercury 39C 357

C liquid

736.1 Matter


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Change of states

Meltingpoint

Boilingpoint


ethanol

Ethanol 114C 78

C liquid

746.1 Matter


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Change of states

Meltingpoint

Boilingpoint


nitrogen

Nitrogen 210C196

C gas

756.1 Matter


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Melting, freezing and boiling

take place at fixed temperatures.During melting, freezing and

boiling, the state of the matter

changes.

Change of states

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1

6.1 Matter


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1melting

1

boiling

freezing condensationsolid gasliquid

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1

6.1 Matter


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2 Which process takes place in eachexample?

1

78

1

6.1 Matter


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a

1

Heating metal at ahigh temperature

in order to shape

the metal

melting

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1

6.1 Matter


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b

1

Making ice cubes

freezing

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1

6.1 Matter


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c

1

Water droplets formingon the surface of a can

of cold drink

condensation

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1

6.1 Matter


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d

1

Boiling soup

boiling

Ch6 Matter of States 1 Oxf

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