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