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Structure Of The Atom
Test Description: Atom is the smallest entity of matter. This game aims to Structure of the Atom course for Grade 8 students.
Instructions: Answer all questions to get your test result.
1) An element is defined by its:
A
Atomic mass.
B
Mass number.
C
Number of neutrons.
D
Atomic number.
2) The main subatomic particles are:
A
None of the above.
B
Protons and Neutrons.
C
Electrons, Protons and Neutrons.
D
Protons and Electrons.
3) The charge of the nucleus is:
A
Negative.
B
Positive
C
Neutral.
D
None of the above.
4) The number of neutrons N can be determined by:
A
N = A – Z.
B
N = A + Z
C
A = Z – N.
D
N = Z - A
5) The neutral particles are called:
A
Electrons.
B
Protons.
C
Positrons.
D
Neutrons.
6) The mass of the atom is concentrated in:
A
The Energy Levels.
B
The Electron Cloud.
C
The Nucleus.
D
Outside the Nucleus.
7) The atom is electrically neutral since:
A
Protons exceed Electrons
B
Protons balance Electrons
C
Protons balance Neutrons.
D
Electrons balance Neutrons.
8) Isotopes are:
A
All of the above
B
Atoms that have the same atomic number.
C
Atoms that have different number of neutrons
D
Atoms that have different mass numbers
9) Cl (Z=17, A=35) and Cl (Z=17, A=37) are:
A
Different elements.
B
Isotopes.
C
Isomers.
D
Allotropes.
10) The number of elements in this set V(Z=7, A=14)- W(Z=12,A=25)-X(Z=6,A=12)-Y(Z=7,A=13) and Z(Z=6,A=13) is:
A
2
B
4
C
5
D
3
*select an answer for all questions
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