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Chemistry Review
Chemistry Review
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1
What happens to the electronegatively when going left to right periodic table?
stays the same
increases
decreases
2
Chemistry is a science that deals with what?
materials from earth that undergo changes
rocks
materials that undergo chemical changes
chemicals
3
Why is a hydrogen bonding different from a dipole-dipole bonding?
hydrogen bonds start weak and become strong
hydrogen bonds start strong and become stronger
hydrogen bonds start weak and become weaker
hydrogen bonds start strong and become weak
4
Rutherford's model had scientific proof of how electrons moved.
False
True
5
The shorter the wavelength, the lower the energy of its corresponding photons.
True
False
6
What is the process of distillation?
mixture separated by particle size
mixture separated by water
mixture separated by boiling into steam
7
What is the formula for the Ideal Gas Law?
P1V1=P2V2
V1/T1 = V2/T2
V1/n1 = V2/n2
PV=nRT
8
What is a saturated solution?
too much solute in the solution
less than maximum solute dissolved in solution
the maximum amount of solute in solution
9
What element did Bohr's Model work with only?
Oxygen
Carbon
Hydrogen
Nitrogen
10
What is the formula for Avogadro's Law?
(P1)(V1) = (P2)(V2)
V1/n1 = V2/n2
PV=nRT
V1/T1 = V2/T2
11
What is filtration?
separation of mixture by particle size
separation of mixture by boiling
separation of mixture by water
12
Chemical characteristics
burn, odor
burn, freeze
odor, volume
color, melting
13
What is Charles Law relate with?
volume & pressure
volume & moles
volume & temperature
pressure & temperature
14
Dilution is a relatively large amount of dissolved solute.
False
True
15
What is a barometer?
measures matter
measures temperature
measures atmospheric pressure
measures atmospheric matter
16
What happens to the atomic size when going left to right on the periodic table?
stays the same
increases
decreases
17
If you have 78 grams of oxygen, how many moles of oxygen do you have? (atomic mass= 15.999)
4.80 moles
4.88 moles
4.90 moles
4.86 moles
18
Reactants makes the products.
True
False
19
What two classes are the binary compounds classified in?
1. contains a metal 2. contains nonmetal
1. contain metal and nonmetal 2. contains two nonmetals
1. contains two metals 2. contains 2 nonmetals
1. contains two metals 2. contains metal and nonmetal
20
What is the process of the formation of a solid called?
precipitation
precipitate
reaction
electrolyte
21
You balance a chemical equation by making both sides equal.
False
True
22
What is a matter?
only certain materials
Stuff the composes the universe & has mass, occupies space
matter
23
What is Dalton's Law formula?
P1 + P2 + P3 = P(total)
V1/P1 = V2/P2
V1/n1 = V2/n2
V1/T1 = V2/T2
24
What is an example of an equality?
Atomic mass in AMU= 1 atom
Atomic mass in grams= 1 mole
Molar mass in grams= 1 mole
All the above
25
Which of these is KOH?
Potassium Nitrate
Potassium Oxide
Potassium Carbonate
Potassium Hydroxide
26
An alloy is not a substance that contains a mixture of elements and has metallic properties
True
False
27
What is a unit conversion?
1 atm= 101.325 Pa
All of the above
1 atm= 12.69 psi
1 atm= 101, 325 kPa
28
Name this acid H2SO4
phosphoric acid
sulfuric acid
acetic acid
29
Add water to acid, not acid to water.
True
False
30
Why do scientists use Scientific Notation?
helps calculate chemicals
Helps with calculations to use really large & small numbers
too make things more scientific
31
Convert 30 degrees Celcius to Kelvin
293K
300K
313K
303K
32
What is a mixture?
variable composition
pure composition
same composition
mixture composition
33
Find the molar mass of KLi. (atomic mass of K= 39.10/ atomic mass of Li= 6.941)
46.043 grams/moles
46.041 grams/moles
46.051 grams/moles
46.012 grams/moles
34
What are photons?
"particles" of energy
"particles" of electromagnetic energy
"particles" of light
"particles" of heat
35
Label electromagnetic wave.
1. Wavelength 2. Trough 3. Peak
1. Trough 2. Peak 3. Wavelength
1. Wavelength 2. Peak 3. Trough
1. Peak 2. Trough 3. Wavelength
36
What is an example(s) of a physical state?
matter
All of the above
solid
chemical
37
What happens to the electronegatively when going down the periodic table?
decreases
stays the same
increases
38
What is a slightly soluble solid?
doesn't dissolve in water
dissolves in water
tiny amount dissolves in water
39
What is the Lewis Diagram made of?
a dot, element
lines, elements
dots, elements
a line, element
40
What is happening to the ionization energy when going down the periodic table?
stays the same
decreases
increases
41
What is an insoluble solid?
tiny amount dissolves in wiater
doesn't dissolve in water
dissolves in water
42
What is molar heat of fusion?
energy required to melt 1 mole of substance
energy required to change 1 mole of vapor into water
energy required to change 1 mole of liquid to vapor
43
The anion is first and the cation is second.
False
True
44
In the equation, the identities of the compounds....
some change, some don't
change
stay the same
45
What is a pure substance?
mixture composition
same composition
variable composition
pure composition
46
Example of an Element
Carbon
Water
Air
Fire
47
What is a soluble solid?
solid that dissolves in water
tiny amount dissolves in water
solid that doesn't dissolve in water
48
Transfer of water molecule forms hydroxide ion & hydronium ion is called ionization of water
False
True
49
What is molar heat of vaporization?
energy required to change 1 mole of vapor into liquid
energy required to change 1 mole of liquid into vapor
energy required to melt 1 mole of substance
50
What are the types of bonds?
Ionic, Covalent, Polar
Ionic, Covalent, Polar Ionic
Ionic, Covelent, Polar
Ionic, Covalent, Polar Covalent
51
What are the STP?
0 degree C & 0 atm
0 degree C & 1 atm
1 degree C & 0 atm
1 degree C & 1 atm
52
What is the difference between qualitative and quantitative?
qualitative is how it looks, quantitative is how much
qualitative is the same as quantitative
qualitative is how many, quantitative is how it looks
53
Without consuming catalysts, it speeds up the reaction anyway.
False
True
54
Two substances related to each other by one single proton is called?
conjugate base
conjugate acid
conjugate acid-base pair
55
What is the ground state?
the lowest possible energy state of an atom
the highest possible energy state of an atom
the constant energy state of an atom
56
The Wave Mechanical Model can determines the exact position of electrons.
False
True
57
What's an example of Scientific Notation?
10 x 7.6
10^7.6
7.6^9 x 10
7.6 x 10^9
58
What are the features that make gases different?
No defined shape but defined volume
Defined shape or volume
No defined shape or volume
Defined shape but no defined volume
59
A compound is bonded together.
False
True
60
Physical characteristics
melting, color
odor, color
volume, vaporizing
burn, freeze
61
Molarity is...
number of moles of solute per volume of solution in mL
number of moles of solvent per volume of solution in mL
number of moles of solute per volume of solution in L
number of moles of solute per volume of solution in mL
62
What is the Law of Conservation of Matter?
matter can't be created, destroyed, or rearranged
matter can be created or destroyed not rearranged
matter can be created but not destroyed
matter can't be created or destroyed only rearranged
63
What is a joule?
SI unit of work or energy
Kelvin unit of work or energy
Metric unit of work or energy
64
The Wave Mechanical Model can predict where electrons might be.
True
False
65
The Ideal Gas Law deals with pressure, volume, moles, and temperature.
True
False
66
If I have 291 AMU of carbon, how many atoms of carbon do I have? (atomic mass= 12.011)
24.1 atoms
214.3 atoms
24.2 atoms
24.5 atoms
67
What does the Avogadro's Law relate with?
pressure & volume
moles & volume
moles & pressure
moles & temperature
68
Elements can be broken down
True
False
69
Why are Significant Figures important?
All of the Above
Precision
Helps with experiment
Quantity needs to be certain amount
70
A dipole-dipole attraction is 2 molecules that are dipole and have + and - charge that attract
false
true
71
A calorie raises the temperature by 1 degree C for 1 gram of water.
True
False
72
List 3 states of matter
solid, liquid, & gas
earth, fire, & water
solid, water, & dirt
73
What does Boyle's Law deal with it?
pressure & volume
temperature & volume
pressure & temperature
volume & moles
74
What is the steps for Scientific Method?
Recognize problem, possible solutions, best solution
solutions, look at the issue, best solution
experiment, question, hypothesis, solve the issue
solve the problem, experiment, question
75
What is the formula for Boyle's Law?
(P1)(V1) = (P2)(V2)
V1/T1 = V2/T2
PV=nRT
V1/n1 = V2/n2
76
What does the Dalton Law deal with?
temperature
volume
moles
pressure
77
Polyatomic Ions are charged entities composed of atoms bound together.
True
False
78
What are the Principal Energy Levels?
#3- s, p, & d
All of the above
#1- s
#2- s & p
79
What can mixtures be classified as?
homogeneous
homogeneous or heterogeneous
heterogeneous
80
What is Density?
Amount of matter present in a given volume of substance
Amount of water in a given volume
how much matter weighs
81
A ____ produces hydrogen ions in an aqueous solution.
base
element
solid
acid
82
What happens to the ionization energy going left to right on the periodic table?
increases
decreases
stays the same
83
Find Density: M: 8 V: 2
41
8
4
2
84
What is 1 AMU equal to?
1.77 x 10(-23)
1.66 x 10(-24) g
1.66 x 10(-21) g
1.77 x 10(-20)
85
Gases take up a lot of space.
False
True
86
When going down a group of a periodic table, what is happening to the atomic size?
stays the same
gets bigger
gets smaller
87
What is the formula for Charle's Law?
P1 + P2 + P3= P(total)
V1/T1 = V2/T2
V1/n1 = V2/n2
V1/P1 = V2/P2
88
Electromagnetic Energy is energy being transported by light.
False
True
89
An equilibrium is exact balancing of two processes, one of which is the opposite of the other.
False
True
90
What are the three measuring systems?
English, Metric, and SI
Metric, SI, and European
English, Metric, and European
English, SI, and European
91
A solution is a homogeneous mixture, which it is not consist throughout.
True
False
92
Where are the metals and nonmetals located on the periodic table?
Metals- bottom Non-metals- middle
Metals- left side Nonmetals- right side
Metals- middle Nonmetals- bottom
Metals- right side Nonmetals- left side
93
What is the mole equal to?
6.022 x 10(23)
6.022 x 10(22)
6.022 x 10(21)
6.022 x 10(24)
94
What is condensation?
energy required to change 1 mole of vapor into liquid
energy required to melt 1 mole of substance
energy required to change 1 mole of liquid into vapor
95
Define specific heat capacity
energy to change 1 mole of substance to 1 degree C
energy to change temp of 1 g of substance to 1 degree F
energy to change 1 mole of substance to 1 degree F
energy to change temp of 1 g of substance to 1 degree C