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