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Chemistry Test 1 Flashcards | StudBud
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Chemistry Test 1
Chemistry Test 1
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Atomic Structure and Periodic Table
Flashcards
22 cards
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Practice quiz
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Questions
22
Answers
1
Which particle has a mass that is approximately equal to the mass of a proton?
beta particle
electron
alpha particle
neutron
2
An ion of which element has a larger radius than an atom of the same element?
Mg
Cl
Al
Na
3
Atoms of different isotopes of the same element differ in their total number of
neutrons
protons
valence electrons
electrons
4
Which atom in the ground state has a stable electron configuration?
C
Ne
Mg
O
5
What is the total number of neutrons in an atom of
7
Li?
7
10
3
4
6
The elements in Group 2 are classified as
noble gases
non-metals
halogens
metals
7
Which Group 14 element is classified as a metal?
Si
Sn
C
Ge
8
The valence electron of which atom in the ground state has the greatest amount of energy?
Na
Rb
Li
Cs
9
As atomic number increases within Group 15 on the Periodic Table, atomic radius
decreases, then increases
increases, only
decreases, only
increases, then decreases
10
Which part of a helium atom is positively charged?
orbital
electron
neutron
nucleus
11
which element is a good conductor of electricity?
Cl
Ag
F
I
12
Which represents the attraction one atom has for the electrons in a bond with another atom?
electronegativity
electrical conductivity
mechanical energy
ionization energy
13
Which is a property of most nonmetallic solids?
high heat conductivity
high electrical conductivity
brittleness
malleability
14
The elements in Period 4 on the Periodic Table are arranged in order of increasing
atomic radius
atomic number
oxidation number
molar mass
15
An atom is electrically neutral because the
number of protons equals the number of neutrons
number of protons equals the number of electrons
ratio of neutrons to the number of electrons is 1:1
ratio of neutrons to the number of protons is 2:1
16
Which list of elements contains a metal, a metalloid, and a nonmetal?
Si, Ge, Sn
Zn, Ga, Ge
Cd, Sb, I
F, Cl, Br
17
The element S is classified as a
Metalloid
Noble Gas
Non-metal
Metal
18
Which Group 14 element is a metalloid?
Sn
Si
C
Pb
19
Which element is a liquid
Fr
I
Cs
Br
20
As a result of the gold foil experiment, it was concluded that an atom
contains protons, neutrons, and electrons
has positrons and orbitals
is a hard, indivisible sphere
contains a small, dense nucleus
21
Which two particles make up most of the mass of a hydrogen-2 atom?
electron and neutron
proton and neutron
proton and positron
electron and proton
22
Which element has chemical properties that are most similar to the chemical properties of Na?
Mg
Be
Ca
Li
