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Chemistry Midterm Review
Chemistry Midterm Review
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#Chemistry
Flashcards
50 cards
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Questions
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Answers
1
In Group 2 elements, valence electrons are in sublevel(s)
s
d
p
s&p
2
Protons in the nucleus are attracted to each other by
VSEPR
nuclear forces
their energy levels
opposite charges
3
An atom is electrically neutral because
nuclear forces stabilize the charges
the number of protons and electrons is equal
the number of protons and neutrons is equal
neutrons balance the protons and electrons
4
Name the compound SO
2
silver dioxide
sodium bioxide
sulfur dioxide
sulfur bioxide
5
In what sublevels are valence electrons found?
s&d
p&d
s,p,d&f
s&p
6
Which part of an atom has a mass around 1/2000 the mass of a common hydrogen atom?
proton
neutron
electron cloud
electron
7
The symbol for the metric unit for mass is
g
mm
m
L
8
An example of a chemical change is
burning paper
melting polar caps
vaporizing gasoline
grinding metal
9
If, after drawing a Lewis structure, there are too many electrons, the molecule probably has
too many unshared pairs
too many atoms
an ionic bond
multiple bonds
10
According to VSEPR theory, the structure of the methane molecule, CH
4
, is
bent
linear
pyramidal
tetrahedral
11
All isotopes of hydrogen contain
one neutron
two neutrons
one proton
two electrons
12
As you move right in a period, atomic radius generally
remains constant
increases
becomes unmeasurable
decreases
13
The name of Al
2
(SO
4
)
3
is
aluminum sulfate
dialuminum sulfur tetroxide
aluminum sulfite
aluminum sulfur oxide
14
A formula that shows the simplest whole-number ratio of the atoms in a compound is the
structural formula
ideal formula
empirical formula
molecular formula
15
The energy required to remove an electron from an atom ______ as you move left to right.
generally increases
does not change
varies unpredictable
generally decreases
16
The chemical formula for calcium phosphate is
Ca3(PO4)2
CaPO4
Ca3PO4
Ca2(PO4)3
17
If the s & p orbitals of the highest main energy level of an atom are filled, the atom has a(n)
circle
electron pair
octet
ellipsoid
18
The empirical formula is always the accepted formula for a(n)
ionic compound
molecular compound
molecule
atom
19
The forces of attraction between molecules are
weaker than ionic bonding
about the same as ionic bonding
zero
stronger than ionic bonding
20
To which block do the alkali metals belong?
p
d
s
f
21
The quantity of matter per unit volume is
weight
density
inertia
mass
22
The symbols for length from smallest to largest are
mm, m, cm, km
cm, km, m, mm
mm, cm, m, km
m, cm, mm, km
23
If two covalently bonded atoms are identical, the bond is
nonpolar covalent
nonionic
polar covalent
ionic
24
The numbers of electrons that can be held in each sublevel are
s:2, p:6, d:10, f:14
s:1, p:2, d:3, f:4
s:2, p:4, d:8, f:10
s:1, p:3, d:5, f:7
25
The atomic number of Neon is 10; this means there are 10
energy levels in the nucleus of neon
protons in the nucleus of neon
nuclides of neon
neutrons outside the nucleus of neon
26
What's the best reason the atomic radius generally increases with atomic number in each group?
The nuclear charge increases.
The number of neutrons increases.
The number of energy levels increases.
A new octet forms.
27
The total number of protons and neutrons in the nucleus of an atom is its
atomic number
Avogadro's number
mass number
purple number
28
Elements in a group in the periodic table can be expected to have similar
atomic numbers
numbers of neutrons
atomic masses
properties
29
The electrons involved in the formation of a bond are called
s electrons
Lewis electrons
dipoles
valence electrons
30
A measurement that closely agrees with accepted values is said to be
significant
precise
reliable
accurate
31
The attraction between ____ forms an ionic bond
dipoles
electrons and nuclei
electrons
ions
32
As light strikes the surface of a metal, the electrons
absorb and re-emit light
become attached to particular ions
fall to lower energy levels
allow light to pass through
33
A measurement is said to have good precision if it
agrees closely with an accepted standard
agrees closely with other measurements of the same quantity
has a small number of significant figures
has a large number of significant figures
34
A chemical bond formed by the attraction between positive ions and mobile electrons is
ionic bond
metallic bond
nonpolar covalent
polar covalent
35
The symbol for the metric unit for volume is
mm
mg
cm
mL
36
A horizontal row of blocks in the periodic table is called a(n)
octet
group
period
family
37
The atomic number of carbon, 6, indicates that there are six
neutrons outside carbon's nucleus
protons in the nucleus of carbon
energy levels in carbon's nucleus
carbon nuclides
38
Ionization energy is the energy required to remove ______ from an atom of an element.
the nucleus.
an ion
an electron.
the electron cloud.
39
2.2L of water is equivalent to
2200mL
220mL
.022mL
.0022mL
40
Because most particles fired at metal foil passed straight through, Rutherford concluded that
atoms contained no charged particles
atoms were mostly empty space
atoms were indivisible.
electrons formed the nucleus.
41
Compared with metals, ionic crystals are
brittle
mealleable
lustrous
ductile
42
A nuclear particle that has about the same mass as a proton, but with no charge, is an
nuclide
isotope
neutron
electron
43
A vertical column in the periodic table is called a(n)
octet
group
period
property
44
malleability and ductility are properties of compounds with
resonance structures
metallic bonds
ionic bonds
covalent bonds
45
How many electrons can occupy the s-sublevel at each energy level?
6
2, if they have the same spin
2, if they have opposite spins
1
46
The chemical bond formed when two atoms share electrons is called a(n)
Lewis structure
covalent bond
orbital bond
ionic bond
47
If the atoms that share electrons have an unequal attraction for the them, the bond is
dipolar
ionic
nonpolar
polar
48
The set of orbitals that are dumbell shaped are called
d orbitals
s orbitals
f orbitals
p orbitals
49
The electrons available to be lost, gained, or shared when atoms form molecules are called
valence electrons.
electron cloud
ions.
inner-shell electrons
50
A chemical bond results from the mutual attraction of the nuclei of atoms and
protons
neutrons
electrons
dipoles
