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