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Structure Of The Atom 8
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) For X (Z,A), Z is the:
A
Atomic mass.
B
Atomic number.
C
Mass number.
D
Number of neutrons.
2) The main subatomic particles are:
A
Protons and Neutrons.
B
Electrons, Protons and Neutrons.
C
None of the choices
D
Protons and Electrons.
3) The charge of the nucleus is equal to:
A
Number of protons × relative charge of a proton.
B
None of the choices
C
Number of electrons × relative charge of an electron.
D
Number of neutrons × relative charge of a neutron.
4) The number of electrons can be determined by:
A
Number of electrons = Z – N.
B
Number of electrons = A + Z
C
Number of electrons = Z - A
D
Number of electrons = A – N.
5) The neutral particles are called:
A
Positrons.
B
Proton
C
Electrons.
D
Neutron
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
Electrons balance Neutrons.
B
Protons balance Neutrons.
C
Protons balance Electrons
D
Protons exceed Electrons
8) Isotopes are:
A
None of the choices.
B
Atoms that have different number of neutrons and protons.
C
Atoms that have the same atomic number but different mass numbers.
D
Atoms that have the same atomic number but different number of electrons.
9) Cl(Z=17, A=35) and X(Z=18, A=35) are:
A
Different elements.
B
Allotropes.
C
Isomers.
D
Isotopes
10) The number of elements in this set V(Z=7, A=14), W(Z=7, A=13), X(Z=6, A=12), Y(Z=7,A=13) and Z(Z=6,A=13) is:
A
2
B
5
C
3
D
4
*select an answer for all questions
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