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Chemistry Review for Exam Flashcards | StudBud
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Chemistry Review for Exam
Chemistry Review for Exam
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A quiz for the reviewing of our exam in chemistry that is coming up soon.
Flashcards
74 cards
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Practice quiz
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Questions
74
Answers
1
Does geometry of molecule affect and determine polarity of a molecule?
Yes, so I should definitely study the geometry of molecules
Neurtal/Can't decide, both options make good claims
No, cause geometry is math, and math is not science
2
What is a steric number of an molecule?
# of pairs of neutrons (bonds and lone pairs)
# of pairs of protons (bonds and lone pairs)
# of pairs of electrons (bonds and lone pairs)
Relating to the spatial arrangement of atoms in a molecule
3
An organic compound is ...
Silcone containing (for the star trek fans)
Hydrogen containing
WHOLE FOOD's food.
Carbon containing, has carbon in it.
4
What is ionization energy?
Engery required to attract electrons
Engery required to remove electrons
Engery required to remove protons
Opposite of Electropositivity
5
What is a polyatomic ion?
a covalent molecule
a covalent molecule with net positive or negative charge
a ionic molecule with net positive or negative charge
An ion made of many atoms
6
Okay. Back to studying. Next Question: What is a hydrogen bond?
Where hydrogen bonds with O, F, or N of another molecule
Governmental bonds given out by hydrogen
Weakest out of all intermolecular forces
A bond of hydrogen
7
What is percent composition?
The percent by mass of a molecule in a compound
The percent of the total mass of an element in a compound
The percent by mass of an element in a compound
The total mass of an element in a compound
8
What is combustion (chemistry definition)?
An explosion (see pic)
the process of burning something
Molecules with C and H react with O2 to produce CO2 and H2O
Molecules with F and H react with O2 to produce SO4 and H2O
9
Why is the Flat Earth idea, presented in the video, not scientific?
No false balance at all in the video
Tons of logical ideas that were put forth
Made by credible scientists, definitely.
Little evidence to back it up :(
10
What is the Mole Method?
coefficients in equation can be interpreted as # of moles
protons in elements can be interpreted as # of electrons
moles in equation can be interpreted as # of coefficients
11
What is an ionic bond?
A giving up of electron(s) from one element to another
A giving up of proton(s) from one element to another
A sharing of electrons between molecules
What is an ionic bond?
12
What is an Intermolecular force?
Forces that are between space and non-space
An organization within molecules
Forces that are within elements
Forces that are between molecules
13
Organic Chemistry is ...
study of structure, properties, & reactions of organic stuff
Organic stuff is organic compounds but ran out of room
Whole Foods!
Stuff for bonus points maybe, not on test so do not care.
14
What is a Lewis Dot Structure?
Way of showing elements and their valence electrons & bonds
A way of showing elements and their valence neutrons & bonds
A dotted potrait of Lewis
A way of showing elements and thier valence protons & bonds
15
What is a valence electron?
The electrons in the innermost shell
An Electron
The electron in the outermost shell
The electron(s) in the outermost shell
16
What is a limiting reactant?
the reactant first used up in a reaction
the reactant NOT first used up in a reaction
Something that limits the reaction
reactant with greater quantities than necessary for reaction
17
What is a mole?
Spy who over a long period has an important position in gov
A unit for conversion
Mexican sauce made from chili peppers, chocolate on meat
A creature that is blind and digs tunnels underground
18
What is net dipole force?
A net used to catch the dipoles
General direction in which electrons are pushed away from
General direction in which the electrons are attracted to
General direction in which the protons are attracted to
19
What is the molar mass of glucose?
123.45
163.07
180.16
74.32
20
Is the geometry of a molecule determined by the steric number of central element?
No.
YES!
Maybe
21
What is the formula for calculating formal charge of an element?
# of valence electrons - # of protons - #of bonds
(Tests) * (Homework) = stress
# of valence electrons - lone pairs - #of bonds
(inverse of matrix A) * (matrix B) = [c]
22
What is synthesis?
a reaction where a compound is made from complex materials
a reaction where a compound is made from simpler materials
a reaction where a compound is made from softer materials
a reaction where a compound is made from harder materials
23
If I disagree with you about gene editing over ethics, this is what type of controversy?
Confict over applications
Confict over ethicality of methods
Secondary scientifc controversy
Confict between scientifc idea and non-scientific viewpoint.
24
Memorize this pic --->
How ones uses mass of a compound to find mass of another one
I am the right answer, trust me please*
Pick this option, it is right.
*Remember what happened to Othello when he trusted people
25
What is Avogadro's number?
6.02x10^24
6.02x10^23
6.0.2x10^23
602x10^23
26
What is percent yield?
the percentage of the product after a chemical reaction
a percentage of yield
((mass of actual yield) / (mass of theoretical yield)) * 100
27
What is Double Replacement?
Everyone has a dancing partner, like multiplying matrices
Positive and negative ions in two compounds switch places
A replacement of two things
Single Replacement x2
28
What is an excess reactant?
a reactant that is first used up in a reaction
reactant, where after reaction, has amounts of it left over
a excess reactant (grammar important for deciding if right)
a reaction with excess products
29
Balance The Equation in the pic ---->
3CaSiO3 + 6HF ----> 2CaF2 + 6SiF4 +3H2O
1CaSiO3 + 6HF ----> 1CaF2 + 1SiF4 +3H2O
CaSiO3 + 6HF ----> CaF2 + SiF4 +3H2O
77CaSiO3 + 6HF ----> 123CaF2 + 42SiF4 + 21H2O
30
How many s
I
g figs in 0.00707
6
3
5
2
31
What is decomposition?
When molecule reacts that leads to being broken upside-down
When an element reacts that leads to being broken down
When a molecule reacts that leads to being broken up
When an molecule reacts that leads to being broken down
32
What is a London (dispersion) Force?
Happens to with I(subnote-2)
temporary dipoles occur by random jumps in electron cloud
The force it takes to have London's bridges fall
(not an answer)
33
Hey! Its been a lot of tough questions. So for a break, here is an easy one. What does 42 mean?
42 = 42, It means nothing <- Wrong.
the * which means anything you want it to be
it is a numerical representation to represent 42 things
The ultimate answer to Life, the Universe, and Everything
34
Why are molecules polar?
Elements being more electronegative & attracting electrons
I do not care
Elements being more electropositive & attracting electrons
Molecules being more electronegative & attracting electrons
35
What is the Electron Configuration of No
[Xe]5f^14 6d^1 7s^2
[Rn]5f^13 6d^1 7s^2 <--- LOOK CLOSELY BEFORE YOU PICK THIS
nothing, it is no
[Rn]5f^14 6d^1 7s^2
36
Balance Reaction shown in the Picture --->
CH4 + 2O2 ----> CO2 + 2H2O
2CH4 + 4O2 ----> 2CO2 + 4H2O
CH4 + 3O2 ----> CO2 + 2H2O
CH4 + 3O2 ----> CO2 + 4H2O
37
How many electrons can a d shell hold at max?
10
1
7
2
38
K
alculate: 10.99 x 7.0
77.2
76.93
77
76
39
H
O
w many sig figs in 90
3
1
2
5
40
What is theoretical yield?
total possible amount of product produced in a reaction
the amount of the product produced in a chemical reaction
a theory, a Chemistry theory
A yield of theories
41
What is a covalent bond?
A bond of sharing everything
A bond that shares neutrons
A bond that shares electrons
A bond that shares neutrons
42
1 mole == ?
6.02x10^-23
-602x10^23
6.02x10^23
1 blind brown creature that digs tunnels
43
Do you need to balance equations in order to figure out what type of reaction it is?
No!
Yes!
No? (remember to always be confident in your answers or else
Maybe, both yes and no options make strong cases
44
Atomic Mass is ...
the mass of an atom
Weight of an atom
Average mass of all of that atoms in the world
Average Mass of atom
45
What is single replacement?
A molecule starts out alone, then replaces another element
The replacement of a single electron by a proton
A dance
The getting rid of and replacement of single objects
46
What is VSEPR mean?
Valence Shell Electron Pair Repulsion Theory
misspelled (in question) word meaning evening
misspelled (missing an e) word meaning evening prayer
A drink (also misspelled in question)
47
What is a dipole?
Separation of positive and negative charges
Combination of positive and negative charges
A force of attraction for molecules
Two tadpoles combined
48
What type of compounds do polyatomic ions form?
Ionic compounds
Military compounds
Compound Interest
Covalent compounds
49
What is a resonance structure?
The structure of a molecule
Stuff needed to know for bonus points for previous tests
The Lewis dot diagram of that molecule
A stucture that is another form of the same molecule
50
Can you Freeze Time? Question number - 7 = ----
R286IGh0dHBzOi8vZG9jcy5nb29nbGUuY29tL2RvY3VtZW50L2QvMWx
pdD91c3A9c2hhcmluZw==
Hmm, where have I seen this before?
HX1RVTE4ya1pMYXY3cEMyZ1M1aE9ORU83Smo5bERyd0FtUjl3MjNCTjgvZWR
51
Who is your favorite teacher?
Just Singleton
Just Singleton
Just Singleton
Just Singleton
52
What are the trends for Ionization energy in the periodic table?
decreases top to bottom and right to left
Same as electronegative trend
increases top to bottom and right to left
decreases bottom to top and right to left
53
If I disagree with the
APPLICATIONS
of the use of the science then this is...?
Secondary scientifc controversy
Confict between scientifc idea and non-scientific viewpoint.
Conflict over applications
Confict over ethicality of methods
54
What is Stoichiometry?
Qualitative study of reactants and products in a reaction
The thing chemistry is infamous for
A horrible, horrible thing. *flees room*
Quantitative study of reactants and products in a reaction
55
Where M is mAss, V is volume, and D is Density. All of these are true except:
D = M/V
V = D/M
M=DV
V = M/D
56
How ma
N
y sig figs in 9310.00
3
6
7
4
57
What are Sig Figs?
Significant Figures
Important numbers
The Most important thing to know for test.
Numbers in a number that important for rounding
58
What is a polar molecule?
A molecule with a net dipole force in any direction
A bond located at the poles of the Earth
A bond with zero/no net dipole force and forces cancel out
59
What is a non-polar (covalent) molecules?
Molecule has no net dipole, & no forces effecting electrons
A molecule that is found at the poles of non-space
Has an aysmmetrical bond
A polar bond
60
What is this?
synthesis
Combustion
Decomposition
An explosion
61
What is order of number of electrons in shell (the simple version)?
8, 8, 2, ...
2, 8, 8, ...
2, 6, 10, ...
1, 2, 3, 4, 5, etc.
62
Memorize This Pic ---->
This tells you how to go from grams, to moles, to # of atoms
Remember do not trust everything you see online kids
This is the right answer*
Please pick me, or you will lose points
63
An isotope of an element is ...?
nothing different from the element
Same number of neutrons, but not electrons
Same number of neutrons, but not protons
Same number of protons, but not neutrons
64
Are you ready for Quiz? MAKE SURE TO PAY ATTENTION TO EVERYTHING! Work Together for puzzle :)
I JUST want to sleep
Wait is something hidden in the kahoot? At the End?
I can't wait to study, so I can get an A!
Lets do this!
65
Electronegativity is ...
An atom's ablity to attract and pull electrons closer to it
Electricity with a neagtive force
Negative electrons
An atom's ablity to push away electrons farther from it
66
What is a dipole-dipole force?
attractive force between polar molecules
attractive force between polar elements
attractive force between non-polar molecules
unattractive force between polar molecules
67
Molar Mass is...?
grams per mole that molecule weighs
Mass of a mole
cm^3 per mole that molecule weighs
liters per mole that molecule weighs
68
What type of bonding is this (see image):
Non-polar ionic
Covalent
Ionic
Polar ionic
69
The trend in the periodic table about atomic radius shows that ...
Atomic radius increases up to down right to left
Atomic radius increases up to down left to right
Atomic radius increases down to up right to left
Atomic radius increases down to up left to right
70
Now, just do some practice of this (actually do problems) and you are all set! YAY!
who cares about this class, not AP credit
Well, this was a waste of time. I do not need to study
Must study all night long, no sleep!!!
Thank you and now I will go study some more problems
71
If I disagree with a major theory that would disrupt the scientific world that would be....?
Confict over ethicality of methods
Confict over ethicality of methods
Fundamental scientifc controversy
Confict over ethicality of methods
72
Rank the intermolecular forces (that we know of) by strength correctly using appropriate sign:
Hyrdogen > dipole dipole <> dispersion
hydrogen = dispersion = dipole dipole
Hyrdogen > dipole dipole >> dispersion
Hyrdogen > london >> dipole dipole
73
What is the misconceived idea of the scientific method?
There is no misconecption of the procedure.
Follows steps: Make observation, hypothesis, and then test
The procedure should be logical/systematic
The procedure is one great flow chart like in the picture.
74
What is the shape of a s orbital?
Squareish
Circle
Spherical
Squarical
