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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..........
iron and gold.
oxygen and carbon dioxide.
table salt and flour.
oxygen and nitrogen.
2
The property of electric conduction is a distinguishing factor between..........
wood and plastic.
iron and copper.
no correct answer.
iron and wood.
3
The taste property is a distinguishing factor between..........
wood and plastic.
milk and honey.
silver and gold.
oxygen and nitrogen.
4
The smell property is a distinguishing factor between...........
iron and copper.
vinegar and perfume.
wood and plastic.
silver and iron.
5
The density of a substance is a........... property.
chemical
no correct answer
biological
physical
6
Density of matter =.............
Volume ÷ Mass
Mass + Volume
Mass x Volume
Mass ÷ 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 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 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).
double
equal to
more than
less than
10
The density of a substance whose mass is 15 gm and occupies 30 cm³ is........... the density of water.
less than
no correct answer
more than
equal to
11
Equal masses of different substances have........... volumes.
similar
equal
constant
different
12
........... is from the substances that float on water surface.
Aluminum
Iron
Cork
Copper
13
When a substance sinks in water, this means that its density is......... the density of water.
more than
no correct answer
equal to
less than
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).
float.
dissolve.
sink.
suspend.
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
28.5
280
16
The density of petroleum oil is.......... that of water.
more than
equal to
less than
no correct answer
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.
density of helium equals that of air.
density of helium is more than that of air.
no correct answer.
18
............ gas is used in filling balloons of celebrations.
Oxygen
Neon
Hydrogen
Nitrogen
19
Heating coils are made up of.......... alloy.
nickel-chrome
iron-copper
chrome-copper
nickel-iron
20
.......... Used for fast cooking
Electric screwdrivers
Hearing coil
Electric wires
Pressure pans
21
Separation of components of petroleum oil depends on the difference in their............
densities.
melting points.
all of them.
boiling points.
22
All of the following substances conduct electricity except..........
aluminum.
wood.
copper.
iron.
23
Metals are characterized by their.........
conductivity of electricity.
all of the previous answers.
high melting point.
conductivity of heat.
24
All of the following substances are bad conductors of heat except...........
iron.
No correct answer
wood.
plastic.
25
All of the following solutions conduct electricity except.......... solution.
acidic
alkaline
sugary
salt
26
Among elements which has a great difficulty to react with oxygen of air is............
sodium.
potassium.
chromium.
aluminum.
27
The metal used to cover other substances which rapidly rust is..........
lead.
copper.
silver.
iron.
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