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Unit 1 - Lesson 1: Matter and its Characteristics
Unit 1 - Lesson 1: Matter and its Characteristics
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تكرار
اختبار خاص بالمعلم:
Amany Zidan
إسمك
صفك
مدة الاختبار:
0:20:00
الوقت المتبقي:
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1
The colour property is a distinguishing factor between..........
iron and gold.
oxygen and nitrogen.
oxygen and carbon dioxide.
table salt and flour.
2
The property of electric conduction is a distinguishing factor between..........
wood and plastic.
iron and wood.
iron and copper.
no correct answer.
3
The taste property is a distinguishing factor between..........
milk and honey.
oxygen and nitrogen.
wood and plastic.
silver and gold.
4
The smell property is a distinguishing factor between...........
vinegar and perfume.
iron and copper.
wood and plastic.
silver and iron.
5
The density of a substance is a........... property.
no correct answer
chemical
biological
physical
6
Density of matter =.............
Mass + Volume
Volume ÷ Mass
Mass ÷ Volume
Mass x Volume
7
The volume of liquid is calculated from the relation..........
density ÷ mass
mass + density
mass × density
mass ÷ density
8
Density of red copper is 8.8 gm/cm³ means
the mass of the volume unit of red copper does not equal 8.8 gm.
the mass of 10 cm³ of red copper equals 8.8 gm.
the mass of the volume unit of red copper equals 0.8 gm.
the mass of the volume unit of red copper equals 8,8 gm.
9
The mass of water in gm is always....... its volume in cm³ (knowing that the density of water is 1 gm/cm³).
less than
more than
equal to
double
10
The density of a substance whose mass is 15 gm and occupies 30 cm³ is........... the density of water.
equal to
no correct answer
less than
more than
11
Equal masses of different substances have........... volumes.
equal
similar
constant
different
12
........... is from the substances that float on water surface.
Iron
Cork
Copper
Aluminum
13
When a substance sinks in water, this means that its density is......... the density of water.
no correct answer
less than
more than
equal to
14
A piece of metal, whose mass is 25 gm and its volume is 10 cm? When it is placed in water it will......... (water density I gm/cm³).
suspend.
dissolve.
sink.
float.
15
The mass of a piece of rock whose density is 2.8 gm/cm³ is 28 gm, so the density of 280 gm of it is......... gm/cm³
28.5
2.8
28
280
16
The density of petroleum oil is.......... that of water.
no correct answer
more than
less than
equal to
17
The balloons that are filled with helium gas in celebrations, rise up in air. because..........
density of helium is less than that of air.
no correct answer.
density of helium equals that of air.
density of helium is more than that of air.
18
............ gas is used in filling balloons of celebrations.
Hydrogen
Oxygen
Neon
Nitrogen
19
Heating coils are made up of.......... alloy.
nickel-iron
chrome-copper
nickel-chrome
iron-copper
20
.......... Used for fast cooking
Hearing coil
Pressure pans
Electric wires
Electric screwdrivers
21
Separation of components of petroleum oil depends on the difference in their............
densities.
melting points.
boiling points.
all of them.
22
All of the following substances conduct electricity except..........
aluminum.
iron.
wood.
copper.
23
Metals are characterized by their.........
all of the previous answers.
conductivity of electricity.
conductivity of heat.
high melting point.
24
All of the following substances are bad conductors of heat except...........
plastic.
No correct answer
iron.
wood.
25
All of the following solutions conduct electricity except.......... solution.
sugary
alkaline
acidic
salt
26
Among elements which has a great difficulty to react with oxygen of air is............
potassium.
aluminum.
chromium.
sodium.
27
The metal used to cover other substances which rapidly rust is..........
lead.
iron.
copper.
silver.
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