GENERAL REVISION.
on unit One.
For Fourth Prim.
I-Complete the following sentences:1-Matter has ……………and ………….
2-The …………..is used for measuring small masses.
3-…………unit is used in measuring small lengths.
4- The volume of the book can be calculated by multiplying
………… ………….. ……………
5-The kilogram is the measuring unit of …………,while cubic
centimeter is the measuring unit of …………..
6-………is the tool that is used for measuring the volume of an
irregular piece of rock.
7- The liter unit is used for measuring the …………of liquids.
8-Common balance is used for measuring ………….
9- Meter is the unit of measuring…………..
10- Oxygen gas occupies a space , so it has a …………..
11- …………...is the amount of matter that the object contains .
12-Everything occupies a space and has amass is called ………..
13- States of matter are ………,………….and ……………
14- Water is a matter in ………..state , while water vapor is a matter
in …………..state .
15- The ……………substances have definite shapes and volumes.
16-Matter that has a definite volume and indefinite shape is known
as …………
17- Both liquids and gases have not definite ……………
18- Matter can be pressed in case of …………….state .
19- Matter changes from one state to another by the effect of
……………and …………….
20- If a solid substance melts , it becomes a ………….
21- The change of matter from a solid state to the liquid state is
called ……………..
22-By heating , water changes into …………
23- ……………..is the change of matter from ………..state
to the gaseous state .
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24- Evaporation is the changing of matter from ………………state
to ……………state .
25- Condensation is the change of matter from the ………..state
to the ………..state .
26-Water can be changed into ice by ………….
27-Changing of ice into water is considered a …………process.
28- Elements are classified into ………..and ………….
29- At the room temperature , all metals are solids except ………..
which is a………..
30- Carbon and ………..are solid non- metals, while oxygen and
……………are gaseous non-metals.
31- ……………is a liquid non-metal.
32-Iron is considered a ………..,while sulphur is ………..
33- …………is a good conductor of electricity, while sulphur
is …………..
34- All non- metals are ……………conductors of electricity
except …………..
35- Graphite is a form of …………which is a good conductor of
…………….
36- ………….can be bent or hammered , but …………..can not be.
37- Metals have ………..boiling points ,but ………..have low
boiling points .
38- The positive poles of the dry cells are made up of ………….
elements .
39- Iron is used in making …………..
40-Cooking pots are made of …………..
41- We use …………..and …………..in manufacturing of jewels .
42 The electric wires are made up of …………….
43- The two kinds of changes that may occur to matter are ……….
Change and ……….change .
44- The dissolving of sugar in water is a………..change .
45- Melting of ice is considered a …………change.
46- The chemical change is a change in the …………of matter .
47- Iron rust is a………….change ,while dissolving of table salt
in water is considered a…………change .
48- Burning of wood is considered a ,,,,,,,,,,,,,,,change .
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49- The freezing of molten wax drops is considered a…… change,
while burning apiece of paper is considered a………change.
50- Iron rusts when it is exposed to …………and …………..
51- Ductility of copper into wires is considered a……….. change ,
while iron rusting is considered a …………..change.
52- Rotten of fruits and their fermentation is considered as
a …………….change .
53- Burning of a candle is a…………..change .
54- Adding yeast in baking is considered a …………change .
55- Production of yoghurt from milk is a ………..change .
II- Write the scientific term :1- Everything that occupies a space and has amass.
2- The amount of matter that the object contains.
3- It is the space that is occupied by that object.
4- It is anything that has mass and volume.
5- Tools used for measuring the length of objects .
6- A tool used for measuring the mass of gold.
7- A tool used for measuring the mass of any object.
8- A unit used in measuring the small lengths.
9- A unit used in measuring the large masses as fruits and vegetables.
10- A state of matter that has a definite shape and volume.
11- A state of matter that has indefinite shape and volume.
12- A state of matter that is characterized by having a definite
Volume and takes the volume of its container .
13- The change of water into water vapor.
14- The transfer of water into ice by cooling .
15- The transfer of ice into water by heating.
16- A change of matter from the gaseous state to the liquid state.
17- An element that is used in manufacturing of foil paper.
18- A metallic element used in making statues and metallic coins.
19- Elements that do not have metallic luster.
20- A non-metal that is used in making the positive pole of dry cell.
21- The only liquid metal at room temperature.
22- A liquid non-metal.
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23- Elements that can be bent.
24- Elements that have low melting and boiling points.
25- A change in the structure of the substance that gives a new
Substance with new properties,
27-A change in the appearance or the shape of matter without any
change in its structure .
28-A change occurs during paper recycling.
29-Achange occurs when iron reacts with oxygen and water.
30-A change occurs when apiece of sugar is burned.
III- Choose the correct answer:1-Every matter has ………….
(volume only-mass only –mass and volume )
2-The measuring unit of mass is ………..
(meter-centimeter-kilogram)
3-The measuring unit of mass is ………..
(liter-meter-gram)
4- One liter equals ………….
(100 cm3-1000cm3-1000cm)
5- The space occupied by matter is the ………..
( shape – mass –volume)
6-………….is used for measuring small mass.
(Graduated cylinder- Sensetive balance- ruler)
7-Matter exists in …………at ordinary temperature.
(One state –two states- three states )
8- Copper and wood are …………
( gases- solids –liquids )
9-If the vapor of a liquid is cooled ,it ………..
( melts -condences –freezes)
10-The change of ice into water is called ………..
( freezing- melting –evaporation)
11-Oxygen is a…………at ordinary temperature .
(gas –solid – liquid )
12- Substances which have no definite shape and no definite
volume are called ………….
(gases –liquids- solids )
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13-The change of water vapour into water is called ………..
(freezing –melting –condensation )
14-……have definite volume but they take the shape of their containers
(Liquids-Solids-Gases)
15-All metals are solids at room temperature except ,,,,,,,,,,,,,,,
(iron-copper-mercury)
16- All the following substances are metals except ………….
(mercury- iron –aluminium)
17-A Metal from which bridges ,car frames and lamp posts
are made is ………….
(gold –aluminium-iron)
18-All non-metals are bad conductors of electricity except……..
( carbon- copper – iron )
19-Electric wires are made up of ………….
( sulphur-carbon-copper)
20-A liquid metal is…………
(mercury- sulphur-carbon)
21-A liquid non-metal is ……………
( phosphorus –bromine-copper)
22-Cooking pots are made up of ………….
(aluminium-iron –sulphur)
23-…………is used in making poles in dry cells .
( Sulphur-Carbon-Oxygen)
24-Both of gold and silver are ………….
(metals- non-metals- compounds)
25- All the following changes are considered physical changes except ..
(freezing of water-melting of wax –burning of wood )
26-The rusting of iron is considered a……….change.
(physical-chemical- both of them )
27-Dissolving of salt in water is considered a………change .
(physical –chemical-both of them )
28-The change in the structure of matter producing anew
substance is called …………..change .
( physical- chemical- appearance)
29-Grinding of sugar is a ………….change.
(physical- chemical-both of them )
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30-All the following are physical changes except ………….
(Dissolving of salt in water- burning of paper- melting of wax)
IV- Correct the underlined words :1-Matter is anything that has volume only.
2-Kilogram is a unit of measuring volumes.
3- The balance is used in measuring the volume of liquids.
4- Volume is the amount of the material inside an object.
5- One kilogram =100 gram.
6-The volume of apiece of a stone is measured with the ruler.
7-The graduated tape is used for measuring volume of liquids.
8-The matter has two states.
9-Water is a solid at ordinary temperature.
10-Liquids have a definite shape and volume .
11-Frrezing is the change of matter from the gaseous state to the liquid
state.
12-If you heat a liquid, it melts.
13-Mercury is a solid non-metal.
14- Non-metals have high melting points.
15-Metals are bad conductors of heat and electricity.
16-All non-metals are bad conductors of electricity except sulphur.
17-Iron rust is considered a physical change.
18-Melting of wax is considered a chemical change.
19-Physical change is the change in the structure of matter.
20-Chemical change is a change in the appearance only.
V- Give reason for each of the following:1- Air is a matter.
-Because it has amass and volume.
2-Salt is a solid matter .
-Because it has a definite shape and volume.
3-Oil is a liquid matter.
-Because it has a definite volume and indefinite shape.
4-Oxygen is a gaseous matter.
-Because it has indefinite shape and indefinite volume.
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5- Air has no definite shape and no definite volume.
-Because air is a gaseous matter.
6-Water has definite volume but no definite shape .
-Because water is a liquid matter.
7-Equal volumes may have different masses.
-Because they are made up of materials.
8-Water freezes when it is put in the freezer.
-Due to decreasing its temperature.
9-Iron and copper are metals .
-Because they have luster, they are good conductors of heat and
electricity, they have high melting points and they are malleable.
10-Cars and bridges are made of iron.
-Because it is malleable.
11-The handles of cooking pots are made up of wood.
-Because wood is a bad conductor of heat .
12- Electric wires are made of copper and aluminium.
- Because they are good conductors of electricity.
13- We must not approach a nail to an electric source .
-Because the nail is made of iron which is a good conductor of electricity.
14- Cooking pots are made up of aluminium.
- Because aluminium is a good conductor of heat.
15- Gold is used in making jewels.
- Because it has luster.
16- The melting of ice is a physical change.
-Because it is a change in the shape without a change in its structure
17- The rusting of iron is a chemical change.
- Because it is a change in the structure producing a new substance
with new properties.
18- Burning of sugar is a chemical change.
-Because it is a change in its structure producing a new substance
with new properties.
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