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