stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Chem 5, 6, 7 Flashcards | StudBud
Explore
/
Chem 5, 6, 7
What is the proper formula for calcium phosphate?
What is a compound?
Chem 5, 6, 7
53 terms
·
StudBud Administration
·
5 plays
#chemistry
Flashcards
53 cards
F
Practice quiz
P
Host live
L
Questions
53
Answers
1
What is a compound?
mixture of elements that can be separated into simpler parts
two or more elements held together by chemical bonds
two or more elements held together by a super bond
2
What is the proper formula for calcium phosphate?
Co3(PO4)2
Ca3(PO4)2
Ca2(PO4)3
Ca3P2
3
What is the name of this organic functional group? ---> -CHO
Alcohol
Aldehyde
Aldeheyde
Alkene
4
What is ionic bonding?
electrostatic attraction between particles w/ opp charges
electronic charge of a nuclear atom
CO2
electron in shared pair is attracted to nuclei of both atoms
5
What is a polyatomic ion that has 1/more oxygen atoms and 1 atom (central) of another element?
Oxoacid
Oxoloanions
Oxoanion
Oxenanions
6
Is the central atom typically the most or least electronegative in a compound?
neutral
least
most
what is a central atom
7
Which of these is not a molecular geometry of an octahedral molecule?
square pyramidal
square planar
seesaw shaped
8
Which is dinitrogen pentoxide?
NO5
N5O2
N2O5
N2CO2
9
If atoms bonded together have EN's that differ by less than .5, they are considered:
nonpolar
ionic
dipoles
polar covalent
10
Are the formulas for ionic compounds usually empirical or molecular?
both
neither
empirical
molecular
11
What is covalent bonding?
two atoms sharing a pair of electrons
division of electrons between four carbon atoms
one atom that gives up all its electrons for another atom
12
What is a lone pair?
a single val e- that isn't involved in covalent bonding
pairs of val. e- that aren't involved in covalent bonding
a pair of e- floating around in the nuclei
13
What charges can an iron ion form?
2+ only
4 + only
2+ and 4+
2+ and 3+
14
What is molar mass?
the mass of 1 mole of a substance, usually given in grams
the total mass of a family of moles
the mass of 1 mole of a substance, usually given in pounds
the total mass of all the atoms in a molecule
15
Formula for dichromate?
CrO4-2
Cr2O7-2
Cr2O5-1
Cr7O2-2
16
As the distance between 2 opp. charged ions increases, lattice energy _______.
increases
decreases
remains constant
17
What does it mean if an acid is polyprotic?
acid has more than one ionizable hydrogen atom
acid has one ionizable hydrogen atom
acid has no ionizable hydrogen atoms
18
A qualitative measure of the polarity of a bond is its _______.
ionicness
polarity
dipole moment
19
____ formulas show the elemental composition, and general arrangement of atoms in the molecule.
empirical
molecular
structural
20
Put in order of
increasing
lattice energy: KI, LiI, NaI
KI < LiI < NaI
KI < NaI < LiI
NaI < LiI < KI
LiI < KI < NaI
21
What is the name of this: H
2
S
(aq)
Hydrosulfuric acid
Hydrogen sulfurate
Two hydrogen one sulfur
Hydrogen sulfide
22
What is an ionic bond?
oppositely charged ions held together by attraction
neutral atoms held together by equally shared e-
partially charged atoms held together by unequally shared e-
23
What is a molecule?
neutral comb of 2 or more atoms held together by chem forces
a charged compound
a negatively charged comb. of atoms held by chem forces
a cool mole
24
A ______ shows the exact # of atoms of each element in a molecule.
molecular formula
structural formula
empirical formula
25
What is an ionic compound made up of?
cations and neutrons
cations and anions
quarks
cations and cations
26
What is a polar covalent bond?
oppositely charged ions held together by attraction
neutral atoms held together by equally shared e-
partially charged atoms held together by unequally shared e-
27
Which compound is ionic?
H2
NaCl
CO2
28
What is a free radical?
a communist
a molecule with an odd number of electrons
Harambe
Donald Trump
29
molecules containing more than two atoms are called ______.
neuatomic molecules
polyatomic molecules
variable molecules
multiatomic molecules
30
Name this: N
2
O
4
dinitrogen tetroxate
tetroxide dinitrogen
tetroxide nitrogen
dinitrogen tetroxide
31
What does the octet rule state?
atoms make new e- to achieve noble gas config.
atoms give up all 8 of their e- because altruism
atoms will lose/gain/share e- to achieve noble gas config.
atoms never want to be at a noble gas config.
32
If atoms bonded together have EN's that differ by 2.0 or more, they are considered:
polar covalent
purely covalent
positively covalent
ionic
33
What is the name of this: HIO
hypoiodous acid
hyperiodic acid
hyperiodine oxide
hydroiodious acid
34
What does VSEPR stand for?
Violent Seals Eat Pink Rice
Valence Shell Electron Pair Repulsion
Valence Shell Electron Particle Repulsion
Valence Shell Electron Particle Rates
35
Fe2+ is the ____ ion, while Fe3+ is the ____ ion.
ferrous, ferrous
ferric, ferrous
ferrous, ferric
ferrous, ferrets
36
"different samples of a given compound always have the same elements w/ the same ratio"
law of multiple proportions
law of definite proportions
law of proportion
law of indefinite proportions
37
What is the equation to calculate formal charge?
formal charge = valence electrons - associated electrons
formal charge = associated electrons - valence electrons
formal charge = associated electrons + valence electrons
formal charge = valence electrons + associated electrons
38
Is this the correct Lewis dot structure for Aluminum?
No
Maybe so
Yes
39
What is the formula for Perchlorate?
ClO-3
ClO3-1
ClO4-1
Cl2
40
What is a pure covalent bond?
neutral atoms held together by equally shared e-
partially charged atoms held together by unequally shared e-
oppositely charged atoms held together by attraction
41
If atoms bonded together have EN's that differ by the range of .5-2.0, they are considered:
none of the above
purely covalent
nonpolar covalent
polar covalent
42
Name this: NF
3
nitrofluoride
nitrogen trifluoride
nitrogen three-fluoride
nitrogen fluorine
43
If a compound contains a metal and a nonmetal it is likely _____.
metalloid
ionic
covalent
44
What is the name of this: SCN
-1
thiocyanide
cyanate
thyrocyanide
sulfuric cyanide
45
What does lattice energy depend on?
the distance between charges
both
magnitude of the charges
46
_____ is the amount of energy reqd to convert 1 mol of ionic solid to its ions in the gas phase
lettuce energy
covalent energy
lattice particles
lattice energy
47
Is the square planar molecular geometry octahedral or tetrahedral?
tetrahedral
octahedral
48
What is the electron-domain geometry of this?
tetrahedral
square pyramidal
octahedral
trigonal bypyramidal
49
Formula for bicarbonate?
H2C2O-1
HCO2-1
HCO3-1
HCO2-2
50
How many lone pairs does this type of molecule have?
1
2
0
1.5
51
What is the electron-domain geometry of this?
trigonal bipyramidal
trigonal planar
octahedral
tetrahedral
52
What is a true characteristic (typically) of electronegativity (EN) ?
all of the above
EN increases from left to right across a period
EN increases with increasing atomic number
EN decreases from left to right across a period
53
What is an allotrope?
one single distinct form of a compound
one of two or more distinct forms of an element
two different forms of an element
two different forms of a compound
