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Atomic Structure and the Periodic Table Flashcards | StudBud
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Atomic Structure and the Periodic Table
Atomic Structure and the Periodic Table
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A #quiz to review #atoms and the periodic table
Flashcards
28 cards
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Questions
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Answers
1
An atom has 10 protons and electrons, and 2 neutrons. What is the mass number of this element?
12
10
20
22
2
Which particles account for most of the mass of an atom?
protons and neutrons
protons and electrons
neutrons and electrons
protons only
3
Which element is represented by the following Bohr (shell) model?
Beryllium
Lithium
Helium
Hydrogen
4
Ben learned that H-2 and H-1 each had 1 proton. Are H-2 and H-1 the same element?
yes: the number of neutrons determines the element
no: the mass determines the element
yes: the number of protons determines the element
No: the number of neutrons determines the element
5
If an atom loses an electron, what charge will it have?
neutral
positive
negative
cannot be determined
6
What particles are found in the nucleus of an atom?
protons and electrons
protons and neutrons
protons only
electrons only
7
How many protons and neutrons are there in the following atom?
6 p and 8 n
6 p and 14 n
14 p and 6 n
14 p and 8 n
8
What is the electron configuration for Li?
1s2
1s22s22p3
1s22s22p63s1
1s22s1
9
Which characteristic is different between Ca-40, Ca-42, and Ca-43?
the number of neutrons in the nucleus
the number of protons
The position in the periodic table
the net charge of the nucleus
10
What is the mass number of an element with 5 protons, 5 electrons, and 1 neutron?
5
11
6
10
11
Which scientist described a model of the atom that included energy levels?
Mendeleev
Bohr
Dalton
Thomson
12
An element with an atomic number of 10 and an atomic mass of 40 would have how many neutrons?
40
30
10
50
13
What are the differences between these isotopes of H?
the number of protons and the atomic number
the number of electrons and protons
the number of electrons and the atomic number
the number of neutrons and the mass number
14
Whose model of the atom is depicted in the following diagram?
Bohr
Aristotle
Thomson
Dalton
15
How do the atoms of H-1 and H-2 differ?
number of protons
number of neutrons
atomic number
number of electrons
16
Which of the following are isotopes?
O-16 and S-32
O-16 and F-19
H-1 and H-3
K-40 and Ca-40
17
Is the following diagram of an electrically neutral atom?
yes: protons and neutrons balance out
yes: protons and electrons balance out
no: protons and electrons don't balance out
no: protons and neutrons don't balance out
18
Which of the following did Rutherford state as a result of his gold foil experiment?
the nucleus is small
the mass of the atom is concentrated in the nucleus
all of these
the + charge of an atom is concentrated in the nucleus
19
Which of the following atoms has eight valence electrons?
Ca
Si
Mg
Ar
20
Which of the following describes the correct change from a neutral atom to its ion?
Na forms Na +1 by losing two electrons
F loses an electron to become F-1
F gains an electron to become F-1
Mg gains 2 electrons to become Mg+2
21
An element has 3 protons, 4 neutrons, and 1 electron. What is its charge?
positive
neutral
cannot be determined
negative
22
Which statement correctly describes subatomic particles?
neutrons are negative and have a mass smaller than a proton
neutrons are neutral and have a larger mass than electrons
electrons are negative and have a larger mass than protons
protons are positive and have a mass smaller than electrons
23
Which part of Dalton's theory was disproved by further research?
all elements are made of atoms
atoms are indivisible particles
compounds are made of 2 or more elements
atoms of different elements are different
24
Atoms with different numbers of ___ are called isotopes.
electrons
neutrons
orbitals
protons
25
Which particle(s) distinguishes an atom of one element from an atom of a different element?
the number of neutrons and protons
the number of neutrons
the number of protons
the number of electrons
26
Which best describes the current atomic theory?
atoms consist of an electron cloud around a + nucleus
atoms consist of electrons in orbits around a + nucleus
atoms can be split easily and become radioactive
an atom's mass is determined by the mass of its neutrons
27
Which best describes an atom?
protons and electrons grouped randomly
protons and electrons grouped alternately
a core of protons and neutrons surrounded by electrons
a core of electrons and neutrons surrounded by protons
28
Which element would have the same Lewis dot structure as silicon?
Al
Ga
As
Ge
