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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 atom
a molecule
an ion
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
50
48.8
30
4
The intermolecular spaces among the molecules of........... are very small.
water
mercury
nitrogen
iron
5
The liquid matter is characterized by all of the following except..........
the intermolecular distances among its molecules are intermediate.
the motion of its molecules is more free.
the intermolecular force among its molecules is very small.
it takes the shape of the container.
6
The intermolecular spaces among the molecules of oxygen gas is ...........
medium.
very small.
very large.
no correct answer.
7
The attraction force among solid molecules is..............
large.
very small.
small.
no correct answer.
8
The attraction force between water molecules is............. that between water vapor molecules.
equal to
less than
more than
no correct answer
9
The.......... matter doesn't take the shape of the container.
no correct answer
liquid
gaseous
solid
10
On heating a solid substance............
the intermolecular spaces among its molecules increase.
the speed of its molecules increases.
all of the previous answers.
the attraction force among its molecules decreases.
11
On heating a liquid substance, an..........
the attraction force among its molecules decreases.
the intermolecular spaces among its molecules increase.
all of the previous answers.
the speed of its molecules increases.
12
The molecule is composed of very small particles called...........
compounds.
cells.
atoms.
elements.
13
It is the simplest pure form of matter which can't be analyzed chemically into simpler form by simple chemical methods.
The element.
an atom.
a molecule.
The compound.
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.
a molecule.
no correct answer.
The compound.
The element.
15
Molecules of nobel gases are composed of........... atom(s).
one
one or two
three
two
16
From inert gases is.........
hydrogen.
oxygen.
helium.
nitrogen.
17
........... is the monoatomic liquid molecule.
Mercury
lodine
Chlorine
Bromine
18
The intermolecular force among the molecules of water is...........
large.
medium.
no correct answer.
small.
19
All of the following are diatomic gaseous molecules except..........
chlorine..
argon.
hydrogen.
nitrogen.
20
Water molecule is composed of........
one hydrogen atom and two nitrogen atoms.
one oxygen atom and two hydrogen atoms.
one hydrogen atom and two oxygen atoms.
two hydrogen atoms and two oxygen atoms.
21
The molecule of oxygen is composed of.......... atom(s).
two
three
one
Four
22
............ molecule is composed of two atoms of two different elements.
Ammonia
Hydrogen chloride
Water
Chlorine
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?...........
Water
Ammonia
Hydrogen chloride
Bromine
25
Ammonia and water molecules participate in the presence of.......... atoms.
nitrogen
oxygen
hydrogen
chlorine
26
One gram of....... contains one type of atoms.
water
iron.
hydrogen chloride
Ammonia
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