لارا عامر الجارحي
نتيجة الإختبار - Grade 7 I U1 L1 GE
اسم الطالب : لارا عامر الجارحي
المدينة : كفر الشيخ
Monday , 30 September 2024 - 10:45 PM13 من 20
السؤال - 1
What is the subatomic component that has the smallest mass?
Proton.
Neutron.
Electron.
Nucleon.
إجابة صحيحة
السؤال - 2
Which of the following subatomic components has a mass of 1 u ?
Proton only.
Electron only.
Each of neutron and proton.
Each of neutron and electron.
إجابة خاطئة
السؤال - 3
The nucleus of potassium atom contains 19 protons, then the electron with the highest energy in this atom is found in the.............
first energy level.
second energy level.
third energy level.
fourth energy level.
إجابة صحيحة
السؤال - 4
What is the number that is the same in all the atoms of the same element ?
Mass number.
Number of electrons.
Number of neutrons.
Number of nucleons.
إجابة خاطئة
السؤال - 5
The electrons of an atom of an element are distributed in 3 energy levels, and the outermost energy level contains 3 electrons, while its nucleus contains 14 neutrons, its mass number is
3
13
14
27
إجابة صحيحة
السؤال - 6
Which of the following is a characteristic of the nucleus of an atom?
Positively charged.
Negatively charged.
Contains negatively charged electrons.
Contains negatively charged protons.
إجابة صحيحة
السؤال - 7
The mass of the atom is approximately equal to the sum of masses of ……..
the electrons and the protons.
the protons and the nucleons.
the neutrons and the electrons.
the protons and the neutrons.
إجابة صحيحة
السؤال - 8
Which of the following groups of elements has chemical symbols starting with the letter A?
Aluminum, Silver and Lithium.
Gold, Mercury and Silver.
Gold, Aluminum and Sodium.
Aluminum, Silver and Gold.
إجابة صحيحة
السؤال - 9
Which of the following represents an element and its correct symbol ?
Potassium P
Phosphorus F
Nitrogen Ni
Chromium Cr
إجابة خاطئة
السؤال - 10
What are the elements which compose glucose C6H12O6?
Carbon, Helium and Water.
Carbon, Hydrogen and Oxygen.
Calcium, Hydrogen and Oxygen.
Copper, Hydrogen and Oxygen.
إجابة صحيحة
السؤال - 11
In the relation (2n2), the symbol (n) refers to……..
energy level number.
number of electrons.
number of protons.
element's symbol.
إجابة صحيحة
السؤال - 12
The number of negatively charged particles in aluminum atom (13Al) is……
13
14
20
27
إجابة صحيحة
السؤال - 13
The energy level L in silicon atom,Si contains…..
2e-
3e-
8e-
18e-
إجابة صحيحة
السؤال - 14
The last energy level contains 7 electrons in the atom of……
7N
9F
11Na
15P
إجابة صحيحة
السؤال - 15
The isotopes of the same element have all the following in common, except……
the atomic number.
number of protons.
number of neutrons.
number of electrons.
إجابة صحيحة
السؤال - 16
The atomic number of an element equals the mass number when the atom does not contain….
electrons.
protons.
neutral particles.
positive particles.
إجابة خاطئة
السؤال - 17
What is the number of nucleons in the nucleus of the element (92U) atom?
92
143
235
327
إجابة خاطئة
السؤال - 18
Among the isotopes of carbon are: Carbon-12 and Carbon-14,Which of the following is correct?
The two isotopes have the same number of neutrons.
The two isotopes differ in the number of nucleons.
The two isotopes have the same mass number.
The two isotopes differ in the number of protons.
إجابة خاطئة
السؤال - 19
A fertilizer package contains the two compounds (NH4)2SO4 and K2SO What are the elements essential for plant growth in this package?
Nitrogen and Hydrogen.
Sulphur and Oxygen.
Potassium and Nitrogen.
Potassium and Sulphur.
إجابة صحيحة
السؤال - 20
The number of electrons that can saturate each energy level in an atom equals ……
three times the energy level number.
twice the square of the energy level number.
twice the energy level number.
twice the cube of the energy level number.
إجابة خاطئة