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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) For X (Z, A) Z is the:
A
Number of neutrons.
B
Atomic number.
C
Mass number.
D
Atomic mass.
2) The main subatomic particles are:
A
Protons and Electrons.
B
None of the choices.
C
Electrons, Protons and Neutrons.
D
Protons and Neutrons.
3) The charge of the nucleus is equal to:
A
None of the choices.
B
Number of neutrons × relative charge of a neutron.
C
Number of protons × relative charge of a proton.
D
Number of electrons × relative charge of an electron.
4) The number of electrons can be determined by:
A
Number of electrons = A – N.
B
Number of electrons = A + Z
C
Number of electrons = Z – N.
D
Number of electrons = Z - A
5) The neutral particles are called:
A
Neutrons.
B
Electrons.
C
Protons.
D
Positrons.
6) The mass of the atom is concentrated in:
A
The Nucleus.
B
The Energy Levels.
C
The Electron Cloud.
D
Outside the Nucleus.
7) The atom is electrically neutral since:
A
Protons balance Electrons
B
Electrons balance Neutrons.
C
Protons balance Neutrons.
D
Protons exceed Electrons
8) Isotopes are:
A
Atoms that have the same atomic number but different number of electrons.
B
None of the choices.
C
Atoms that have the same atomic number but different mass numbers.
D
Atoms that have different number of neutrons and protons.
9) Cl (Z=17, A=35) and X (Z=18, A=35) 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=7, A=13), X (Z=6, A=12), Y (Z=7, A=13) and Z (Z=6, A=13) is:
A
4
B
3
C
2
D
5
*select an answer for all questions
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