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Unit 1 - Lesson 2: Matter Construction
Unit 1 - Lesson 2: Matter Construction
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تكرار
1
The properties of.......... of water is the same properties of 100 ml of it.
a molecule
an element
an ion
an atom
2
The motion of solid molecules is..........
unlimited.
limited.
completely free.
the most.
3
On adding 30 cm³ of water to 20 cm³ of alcohol, the volume of the mixture becomes......... Cm³.
30
54
48.8
50
4
The intermolecular spaces among the molecules of........... are very small.
water
nitrogen
mercury
iron
5
The liquid matter is characterized by all of the following except..........
it takes the shape of the container.
the intermolecular force among its molecules is very small.
the motion of its molecules is more free.
the intermolecular distances among its molecules are intermediate.
6
The intermolecular spaces among the molecules of oxygen gas is ...........
very small.
medium.
very large.
no correct answer.
7
The attraction force among solid molecules is..............
small.
no correct answer.
large.
very small.
8
The attraction force between water molecules is............. that between water vapor molecules.
no correct answer
more than
equal to
less than
9
The.......... matter doesn't take the shape of the container.
solid
gaseous
no correct answer
liquid
10
On heating a solid substance............
the speed of its molecules increases.
all of the previous answers.
the attraction force among its molecules decreases.
the intermolecular spaces among its molecules increase.
11
On heating a liquid substance, an..........
the attraction force among its molecules decreases.
the intermolecular spaces among its molecules increase.
the speed of its molecules increases.
all of the previous answers.
12
The molecule is composed of very small particles called...........
cells.
atoms.
elements.
compounds.
13
It is the simplest pure form of matter which can't be analyzed chemically into simpler form by simple chemical methods.
The element.
a molecule.
The compound.
an atom.
14
It is a substance which is formed from the combination of atoms of two or more different elements with constant weight ratios.
an atom.
no correct answer.
The compound.
a molecule.
The element.
15
Molecules of nobel gases are composed of........... atom(s).
one
two
three
one or two
16
From inert gases is.........
oxygen.
nitrogen.
helium.
hydrogen.
17
........... is the monoatomic liquid molecule.
Bromine
Mercury
lodine
Chlorine
18
The intermolecular force among the molecules of water is...........
medium.
small.
large.
no correct answer.
19
All of the following are diatomic gaseous molecules except..........
chlorine..
argon.
hydrogen.
nitrogen.
20
Water molecule is composed of........
one oxygen atom and two hydrogen atoms.
one hydrogen atom and two oxygen atoms.
two hydrogen atoms and two oxygen atoms.
one hydrogen atom and two nitrogen atoms.
21
The molecule of oxygen is composed of.......... atom(s).
one
three
Four
two
22
............ molecule is composed of two atoms of two different elements.
Water
Chlorine
Ammonia
Hydrogen chloride
23
The number of elements is equal to the number of atoms in......... molecule.
hydrogen chloride
ammonia
water
oxygen
24
Which one of the following molecules contains the largest number of atoms?...........
Hydrogen chloride
Bromine
Water
Ammonia
25
Ammonia and water molecules participate in the presence of.......... atoms.
chlorine
oxygen
hydrogen
nitrogen
26
One gram of....... contains one type of atoms.
Ammonia
hydrogen chloride
water
iron.
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