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Chemistry 100 Questions final
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100 cards
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Questions
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Answers
1
What law states that pressure, volume and temperature together create a constant?
Ideal Gas Law
Boyle's Law
Combined Gas Law
Charles's Law
2
balance this equation... KClO3 --> KCl + O2
KClO3 --> KCl + O2
already balanced
7
3
Convert 100C to Kelvin
300 Kelvin
100 Kelvin
370 Kelvin
373 Kelvin
4
Concrete is a element, compound, homogeneous, or heterogeneous
homogeneous
element
compound
heterogeneous
5
How many protons are in Argon?
23 Protons
18 Protons
6
A non metal and a metal make a...
Material
Covalent Bond
Ionic Bond
7
Convert 10 dm to Dm
.001
1
.1
.01
8
If gas is held at a constant pressure, its volume is directly proportional to the temperature?
Charles’s Law
Boyle’s Law
Graham's Law
9
What is considered the "Universal solvent"
Acid
Poison
Water
Gas
10
What is the fourth element on the periodic table?
Gold
Copper
Ununquadium
Boron
11
Name the following chemical compound: NaBr
Sodium bromide
Sodium barium
12
What is the third most common gas found in the air we breathe?
Oxygen
Nitrogen
Helium
Argon
13
Which Gas Law is V1/N1=V2/N2
Sir Issac Yee law
Avogadro's Law
Ideal gas law
14
The luster of a metal is due to
presence of free electrons
Electromagnetic pulses
Polish
15
What orbits the nucleus of an atom?
Electrons
Neutrons
Protons
16
The first metal used by man was....
Yee
Carbon
Iron
Copper
17
The nucleus of an atom consists of...
electrons and neutrons
electrons and protons
protons and neutrons
All of the Above
18
Atoms of the same chemical element that have different atomic mass are known as?
Ionic bonds
Cuntriboiions
Isotopes
Poly-Atomic Ions
19
Balance: NH3 + CuO = Cu + N2 + H2O
2 NH3 + 3 CuO = 3 Cu + N2 + 3 H2O
C3H8 + 5 O2 = 3 CO2 + 4 H2O\
20
balance this equation... C3H8+O2-->H2O+CO2
C3H8+O2-->H2O+CO2
C3H8+5O2-->4H2O+3CO2
C3H8+5O2-->6H2O+3CO2
21
A 4 g sugar cube,C
12
H
22
O
11
is dissolved in a 350 mL cup. What is the molarity of the solution?
M = 1.133 mol/L
M = 0.533 mol/L
M = 0.033 mol/L
22
Name the following chemical compound: HCl
Hydrogen Chloride
Hydrochloric acid
23
What is an example of a chemical reaction
Cracking an egg
Photosynthesis
24
Convert 4568 centimeters to kilometers
0.04568
45.68
4.568
25
What is the second element on the periodic table?
Hydrogen
Oxygen
Ununquadium
Helium
26
Where is the emergency shower located in chemistry room?
Inside the room
Outside the room to the left
Outside the room to the right
27
The hydronium ion is...
H3O+
H304-
What is hydronium?
28
3.5 moles of calcium=_______grams
135 grams
140 grams
145 grams
29
What is the center of an atom called?
A nucleus
An Element
30
The absolute pressure and the volume of a gas are inversely proportional is who's law?
Avogadro's law
Boyle’s Law
Charles’s Law
31
Whose law said that the rate of effusion of a gas is inversely proportional to the square root.
Ideal Gas Law
Graham's Law
Charles's Law
Boyle's Law
32
When electrons in an atom in an excited state fall to lower energy levels, energy is
both released and absorbed
released, only
absorbed, only
neither released nor absorbed
33
Compared to the charge and mass of a proton, an electron has
n opposite charge and a smaller mass
the same charge and the same mass
an opposite charge and a smaller mass
the same charge and the same mass
34
How many grams of carbon dioxide are there in a container with a volume of 4.50L at STP?
213415g
2.401g
2.41g
23g
35
sample contains 27.1 g of calcium oxide. How many moles of calcium oxide are in the sample?
2 moles
.634 moles
Chem is try
.483moles
36
Whose law said the principle that, for relatively low pressures, the density of an ideal gas...
Gay-Lussac’s Law
Avagadro's Law
Combined Gas Law
Boyle's Law
37
What is di-hydrogen monoxide
Cancer
Flammable Liquid
Poison
Water
38
Express 1,000,000 m to scientific notation
1.0x104
1.0x106
1.0x105
39
Balance: C3H8+ O2 = + CO2 + H2O
2 NH3 + 3 CuO = 3 Cu + N2 + 3 H2O
C3H8 + 5 O2 = 3 CO2 + 4 H2O\
40
The number of protons that an atom has is known as the atom’s...
Atomic Mass
Atomic Number
41
Convert to Celsius 273K
1 c
273 c
0 c
42
Identify the type of reaction: 2H2 + O2→
Single Replacement
Double Replacement
Synthesis
43
A chemical can be defined as…
any gas that has an indefinite composition
any substance that has a definitive composition
any substance that has an indefinite composition
44
balance this equation... F2 (g) + NH3 (g) --> N2F4 (g) + HF (g)
Unbalance-able
5F2 (g) + 2NH3 (g) --> N2F4 (g) + 6HF (g)
F2 (g) + NH3 (g) --> N2F4 (g) + HF (g)
Already Balanced
45
Is burning paper a physical or chemical reaction?
Chemical
Phisical
46
Density=______
mass/volume
volume * heat
volume/pressure
47
balance this equation... NO + Cl2 --> NOCl
Already Balanced
2NO + Cl2 -->2 NOCl
NO + 2Cl2 --> 2NOCl
48
Which is larger
10 km
10 dm
49
Will Potassium(K) react with Calcium(Ca)
Maybe So
Yes
No
50
How many atoms are in 0.652 mol of iron?
6g
4 atoms
Africa
3.93x10^23
51
How many moles of nitrogen are there in a 7.45 mol sample of ammonium phosphate?
22.44 Mol
0.324 Mol
22.4 Mol
37.13 Mol
52
Write the chemical equation for potassium oxide...
K3O2
K2O
KO2
53
What elements are found in the chemical compound sucrose? (Alphabetical order)
Carbon, Helium, Oxygen
Carbon, Hydrogen, Oxygen
54
What is the charge of an electron
Negative
Postive
No charge
55
What is chemistry
Failing
Lyfe
It is try fam
Crying in a corner
56
The most malleable metal is
copper
Magnesium
gold
silver
57
Energy is...
The capacity to do some kind of work
Chemistry
The darkside
The force
58
Who started the creation of the periodic table?
Ms. Johnson
Boyle
Avagadro
Mendeleev
59
Which Gas Law is P1xV1=P2xV2
Derek's Law
Charles' law
Boyle’s law
60
What is the chemical equation for ammonia
NH3
N3H
NHO3
61
What is the charge of a proton
Negative
No charge
Positive
62
Find the number of moles in CO2 that weighs 454 grams.
7.3 moles
1 mole
10.3 moles
63
What is the charge of a Neutron
No charge
Negative
Positive
64
Groups 3-12 on the periodic table are referred to as the _________ metals
heavy
transition
light
65
Group 2 on the periodic table is referred to as the______ _____ metals
light metals
alkaline earth
solid metals
66
Define heterogeneous…
composed of dissimilar components
unified structure or composition throughout
67
Convert 23 C to kelvin
211k
296k
400k
68
Which of these is an element
Zcn
W
Cu
America
69
The molar mass of an element is…
Only amount of Neutrons
The mass in grams of one mole of the element
Only amount of Protons
70
what is the percent yield if the theoretical yield is 100g and actual yield is 46g
64% yield
46% yield
141% yield
71
What is the third element on the periodic table?
Boron
Ununquadium
Calcium
Lithium
72
What is an example of physical reaction
Painting a fence
Photosynthesis
73
which poly-atomic Ion has a positive charge of 1
Ammoniya
Cibrit
Ammonium
74
What is the symbol for the element Potassium
P
Ta
Po
K
75
What law states that, “the equation of state of a hypothetical ideal gas?”
Combined Gas Law
Boyle's Law
Ideal Gas Law
76
Which element has the largest molar mass
Li
F
Rb
Na
77
What is the one hundred fourteenth element on the periodic table?
Ununbium
Hydrogen
Boron
Ununquadium
78
Write the formula the following compound: silicon dioxide
Si2O
SiO2
79
NaOH
Calcium Cloride
Undefined
Pi
Sodium Hydroxide
80
Which element is a transition metal
Oxygen
Copper
Chemistry
81
Identify the type of reaction:NaCl→
Combustion
Decomposition reaction
82
Convert -12 C to kelvin
1000K
300K
261K
400K
83
Where are the noble gasses located on the periodic table?
The right side of the periodic table
The middle of the periodic table
The left side of the periodic table
84
balance this equation... KClO3 --> KCl + O2
2KClO3 (s) --> 2KCl (s) + 3O2 (g)
KClO3 (s) --> 2KCl (s) + 3O2 (g)
85
Convert to Kelvin 34c
34c
345k
12k
307k
86
Write Bromine Pentafluoride
FeF5
Bromine
BF5
BrF5
87
balance this equation... NaCl+F2 --> NaF + Cl2
KClO3 (s) --> 2KCl (s) + 3O2 (g)
2NaCl+F2-> 2NaF + Cl2
Already balanced
88
Is Limestone (CsCO
3
) a Pure Substance or Mixture
Mixture
Pure Substance
89
Define homogeneous…
unified structure or composition throughout
Separated structure or composition throughout
90
Is CaCl2 a Ionic or Covalent compound
Ionic
Covalent
Neither
91
The mass number of an atom is equal to....
Atomic weight
The molar mass
the number of nucleons
Dr.Pepper
92
Is Concrete a Pure Substance or a Mixture
Mixture
Pure Substance
93
A chemical is...
Something magical :)
Any substance that has a definite composition
94
The molecular formula of phosphorus is....
P4
P2
K
95
What is the correct form of Advogados number
6.03x1023
6.02x1023
7x10
4
96
true or false Acids have a pH level below 7.
True
False
97
The rarest gas in the atmosphere is
HCL
Argon
Desium
98
How many moles of nitrogen are there in a 7.45 mol sample of ammonium phosphate?
22.4mol
27.13mol
99
Which element is a noble gas
Copper
Copper (II) sulfate
Hydrogen
100
Equal volumes of all gases, at the same temp. and pressure, have the same number of molecules?
Boyle's Law
Avogadro's law
Gay-Lussac’s Law
