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Chemistry
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Chemistry quiz project
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1
A limiting agent is
never happens in chemistry
something that limits how much you can make
having more than needed
2
All of the following are bases EXCEPT
vinegar
KOH
tums
ammonia
3
How many moles of NH3 are produced when 0.06 moles N2 react with hydrogen?
1.2 moles
3.25 moles
0.65 moles
1 mole
4
A balanced equation must
have particles that are destroyed
have the same number of atoms of each element
have particles that are created
have new elements in the end
5
A chemical equation that doesn't indicate relative amounts of reactants and products is a(n)
balanced equation
ghost equation
aqueous equation
skeleton equation
6
ionic compounds consist of
only cations
a cation and an anion
one element
only anions
7
Any substance that interferes with the hydrogen bonding between water molecules
solute
surfactant
solvent
solution
8
What is the calculation of quantities in chemical equations called?
percent yield
stoichiometry
1 mole
perecent composition
9
What is the molar mass of H2O2
37 g/mol
18 g/mol
34 g/mol
25 g/mol
10
Bases must contain
HCL
NO
OH
H
11
Avagadro's number of representative particles is equal to one
kilogram
gram
pound
mole
12
A dipole interaction would occur when
polar nad nonpolar molecules attract
polar molecules repel eachother
polar molecules are attracted to eachother
polar and nonpolar molecules repel eachother
13
What is the number of atoms of He gas in 1.0 L of gas as STP?
2.709 X 10^22 atoms
1.351 X 10^25 atoms
3.5 X 10^23 atoms
2.931 X 10^22 atoms
14
a binary compound can also be called a(n)
cations
polar bond
ionic compound
polyatomic
15
All of the following are anions EXCEPT
iodine
chlorine
cobalt
selenium
16
Formula for molarity
moles/grams
moles/liters
liters/grams
liters/moles
17
Acids
have a ph of over 7
turns red litmus paper blue
are an ionic compound
tastes bitter
18
What will a complete combustion always create?
H2O only
none of the above
CO2 only
CO2 and H2O
19
The prefix hepta- means
7
5
6
4
20
In a combustion reaction one of the reactants is
hydrogen
oxygen
nitrogen
rubber ducks
21
Which of the following is a cation?
sulfate
chlorite
Ca2+
P3-
22
You would predict whether or not a single replacement takes place with a chart that shows
the law of conservation of mass
periodic table
activity series of metals
the law of multiple proportions
23
Aqueous means
dissolves in direct light immediately
is mixed in with gas
dissolves in water
becomes hard
24
Gases are
have little space between the particles
easily compressed
always 90 degrees F
solid at room tempurature
25
conserved in every ordinary chemical reaction
mass
area
volume
liters
26
a suspension
is a heterogenous mixture
a single phase
doesn't have Brownian motion
is a homogenous mixture
27
Which of the following elements MUST always appear in 2s
Br
He
C
Ga
28
A catalyst is
not used up in the reaction
one of the reactants in single replacement reactions
a solid product of a reaction
the product of a combustion reaction
29
What is the correct nam for the compound CoCl2
cobalt II chloride
cobalt I chloride
cobalt I chlorate
cobalt II chlorate
30
Charles' law states
if the tempurature is high, the volume will be too
if the tempurature is low the volume will be high
if the tempurature is high the volume will be low
if the tempurature is high the mass will be low
31
What is the molar mass of NaCl?
58.5 g
92.4 g
103.5 g
56.3 g
32
The suffix that means lower is
-ate
-ous
-ic
-ide
33
Which element combined with Fluorine would form an ionic compound?
sodium
chlorine
carbon
phosphorus
34
Water molecules have a ____ shape
straight
bent
springy
rectangular
35
Number of representative particles of a substance present in 1 mole of substance
percent composition
Avagadro's number
Tungsted's formula
empirical formula
36
Solutions
have large particles
have very small particles
have no particles
have medium particles
37
A balanced question represents
liquids dissolving
a chemical reaction
Avagadros number
solids combining
38
What is the molarity of a solution that has 10.0 grams of NaOH dissolves in 1 L of solution?
0.56
0.25 M
4.5 M
0.356 M
39
The volume of one mole of a substance is 22.4 L at STP for all ____.
gases
polar covalent bonds
liquids
solids
40
what is the molar mass of H3PO4
131 g/mol
80.5 g/mol
98 g/mol
34 g/mol
