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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.
oxygen and carbon dioxide.
table salt and flour.
2
The property of electric conduction is a distinguishing factor between..........
iron and wood.
no correct answer.
iron and copper.
wood and plastic.
3
The taste property is a distinguishing factor between..........
silver and gold.
wood and plastic.
oxygen and nitrogen.
milk and honey.
4
The smell property is a distinguishing factor between...........
silver and iron.
wood and plastic.
vinegar and perfume.
iron and copper.
5
The density of a substance is a........... property.
biological
chemical
no correct answer
physical
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
density ÷ mass
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 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).
equal to
more than
less than
double
10
The density of a substance whose mass is 15 gm and occupies 30 cm³ is........... the density of water.
no correct answer
more than
less than
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.
equal to
less than
no correct answer
more 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).
dissolve.
sink.
suspend.
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
280
2.8
28
16
The density of petroleum oil is.......... that of water.
more than
less than
no correct answer
equal to
17
The balloons that are filled with helium gas in celebrations, rise up in air. because..........
density of helium equals that of air.
density of helium is more than that of air.
density of helium is less than that of air.
no correct answer.
18
............ gas is used in filling balloons of celebrations.
Oxygen
Hydrogen
Neon
Nitrogen
19
Heating coils are made up of.......... alloy.
chrome-copper
nickel-iron
iron-copper
nickel-chrome
20
.......... Used for fast cooking
Hearing coil
Electric screwdrivers
Pressure pans
Electric wires
21
Separation of components of petroleum oil depends on the difference in their............
densities.
all of them.
melting points.
boiling points.
22
All of the following substances conduct electricity except..........
aluminum.
iron.
copper.
wood.
23
Metals are characterized by their.........
high melting point.
conductivity of electricity.
conductivity of heat.
all of the previous answers.
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.
acidic
sugary
alkaline
salt
26
Among elements which has a great difficulty to react with oxygen of air is............
sodium.
aluminum.
chromium.
potassium.
27
The metal used to cover other substances which rapidly rust is..........
copper.
iron.
silver.
lead.
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