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Structure Of Atoms
Test Description: Structure and Properties of Atoms 8.5A, 8.5B
Instructions: Answer all questions to get your test result.
1) According to the periodic table, which of the following best represents a Nitrogen atom?
A
Protons = 7; Neutrons = 7; Electrons = 6
B
Protons = 14; Neutrons =7 ; Electrons = 14
C
Protons = 7; Neutrons = 7; Electrons = 7
D
Protons = 7; Neutrons = 14; Electrons = 14
2) What is the atomic number of Silicon? How many valence electrons?
A
14;4
B
28;4
C
42;14
D
4;14
3) Which of the following gives the correct number of each subatomic particle that make up a neutral Chlorine atom?
A
Protons = 17; Neutrons = 35; Electrons = 18
B
Protons = 8; Neutrons = 9; Electrons = 17
C
Protons = 17; Neutrons = 18; Electrons = 17
D
Protons = 7; Neutrons = 10; Electrons = 7
4) If an atom has an atomic mass of 101 and an atomic number of 44, how many neutrons would it have?
A
57
B
44
C
145
D
101
5) Which of the following determines an atom’s reactivity?
A
# of Protons
B
# of valence electrons
C
# of Photons
D
# of Neutrons
6) Which of thèse best describes one of the subatomic particles that could be found in the center of the atom?
A
It has a mass but no charge.
B
It has a large mass and a negative charge.
C
It has no mass and an equal number of positive and negative charges.
D
It has no mass and a positive charge.
7) Which of the following statements regarding electrons is true?
A
Electrons have a high probability of being found in an area called the electron cloud.
B
Electrons and protons are the same size and have the same mass.
C
Electrons are the largest particle and are found in the electron cloud.
D
Electrons are negatively charged and found in the nucleus of the atom.
8) Which two subatomic particles contribute the most to the mass of an atom?
A
Protons and neutrons
B
Neutrons and electrons
C
Electrons and the nucleus
D
Protons and electrons
9) There are three main types of subatomic particles in an atom. Which of these particles balance the charge of the atom?
A
protons and neutrons
B
protons, electrons, and neutrons
C
electrons and neutrons
D
protons and electrons
10) What is the charge of the electron, the neutron, and the proton?
A
Electrons are negative, neutrons are positive, and protons are positive
B
Electrons are negative, neutrons are positive, and protons are positive
C
Electrons are negative, neutrons are neutral, and protons are neutral
D
Electrons are negative, neutrons are neutral, and protons are positive
*select an answer for all questions
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