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