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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 number.
B
Number of neutrons.
C
Mass number.
D
Atomic mass.
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
None of the above.
B
Positive
C
Neutral.
D
Negative.
4) The number of neutrons N can be determined by:
A
A = Z – N.
B
N = A – Z.
C
N = A + Z
D
N = Z - A
5) The neutral particles are called:
A
Protons.
B
Neutrons.
C
Electrons.
D
Positrons.
6) The mass of the atom is concentrated in:
A
The Nucleus.
B
Outside the Nucleus.
C
The Electron Cloud.
D
The Energy Levels.
7) The atom is electrically neutral since:
A
Electrons balance Neutrons.
B
Protons balance Electrons
C
Protons exceed Electrons
D
Protons balance Neutrons.
8) Isotopes are:
A
Atoms that have the same atomic number.
B
Atoms that have different number of neutrons
C
Atoms that have different mass numbers
D
All of the above
9) Cl (Z=17, A=35) and Cl (Z=17, A=37) are:
A
Isotopes.
B
Isomers.
C
Allotropes.
D
Different elements.
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
3
C
5
D
4
*select an answer for all questions
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