stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
chem exam fall review Flashcards | StudBud
Explore
/
chem exam fall review
chem exam fall review
94 terms
·
StudBud Administration
·
112 plays
Imported from external platform
Flashcards
94 cards
F
Practice quiz
P
Host live
L
Questions
94
Answers
1
_____________ is the % that the actual yield differs from the theoretical yield.
experimental error
actual error
upps I did it again
percentage yield
2
This term refers to the size of an atom from its nucleus to its valence electrons
Atomic radius
first ionization energy
electronegativity
3
The reactivity of halogens decreases down the group because...?
Easier to gain 1e- because it is further from the nucleus
Harder to gain 1e- because it is further from the nucleus
Harder to lose 7e- because they're further from the nucleus
Harder to gain 7e- because they're further from the nucleus
4
Which has a larger radius: magnesium or calcium?
calcium
magnesium
5
What is true about the burning of paper?
some of the mass is converted into heat, some into a gas
most of the mass is converted into heat energy
most of the mass is converted into light
most of the mass is converted into a gas
6
The
2
in 3s
2
stands for
who cares
energy level
orbital blocks
electrons
7
A chemical change occurs when a piece of firewood is
split
cut
decayed
painted
8
Which substance can be separated by chemical change?
heterogeneous mixture
element
homogeneous mixture
compound
9
What group can you find Lithium in?
alkaline
halogens
alkali
transition metals
10
Which has a higher electronegativity: sulfur or phosphorus?
phosphorus
sulfur
11
E-80 has an abundance of 25%, E-81 has an abundance of 75%:: Average Mass is:
161
80.75
81.25
80.25
12
Iron is in which group?
halogens
transition metals
alkaline
alkali
13
Which of the following is a chemical property?
ability to rust
sublimation
melting
burning
14
Which of the following element(s) forms an ion with a 3- charge?
B
N
Br
Al
15
Physical changes can be either reversible or irreversible.
True
False
16
The
letter
stands for
energy level
orbital block
more stuff
number of electrons
17
P-orbitals can accommodate up to ___ electrons.
14
6
10
2
18
As you move down alkali metals the reactivity...?
Decreases
Increases
Stays the same
19
Which part of the atom has a neutral charge?
electron
neutron
atomic mass
proton
20
Which group is represented in this image?
metalloids
halogens
noble gases
nonmetals
21
Repeatable results are...
extensive
precision
accuracy
intensive
22
Why does radius decrease from left to right on the periodic table?
It doesn't; radius increases from left to right
Fewer electron shells make smaller atoms
More protons mean increased force on the valence electrons
Decreased electron-electron repulsions
23
Complete the electron configuration for calcium:
1s
2
2s
2
2p
6
3s
2
3p
6
...
4s24p1
4s2
3d14s1
3d1
24
What element is this the Bohr model of? (3P, 4N, 3e)
Neon
Lithium
Beryllium
Sodium
25
How can you determine how many energy levels (shells) there are when drawing the Bohr diagram?
block letter
period number
atomic number
group number
26
Rows are called?
Periods
Groups
Rows
Columns
27
This type of property depends on the amount of matter present.
physical
extensive
intensive
chemical
28
Which group is represented in this image?
nonmetals
Alkali metals
Alkaline earth metals
halogens
29
How many neutrons a Li-8 isotope?
5
9
3
4
30
How many protons are there in Potassium?
39
15
56
19
31
How many total electrons can be in the D block
2
6
14
10
32
rule stating that the electrons will disperse in an energy level?
hund's rule (guy rule)
Aufbau (lowest first)
Pauli exclusion (cs/ccs)
Kardashian rule
33
Who came up with the idea of Energy levels
Bohr
Schroedinger
Rutherford
Thompson
34
What does the atomic number of an element
directly
relate to?
number of protons
number of neutrons
atomic mass
number of electrons
35
with sig figs figure: 2.025 + 1.2
3.225
3
3.22
3.2
36
1s
2
2s
2
2p
6
3s
2
3p
1
Al
B
Si
Mg
37
True or false: Electronegativity increases as you move down the periodic table
false
true
38
True or false: Ionization energy increases as you move to the right on the periodic table.
true
false
39
Period number (for the s and p orbitals) is equal to...
Total # neutrons
# energy levels
# valence electrons
Total # electrons
40
Which state of matter is the most abundant in the universe?
solid
gas
liquid
plasma
41
How can you determine the number of electrons in each of the elements?
Same as the number of protons
Subtracting protons from mass
Same as the number of neutrons
Adding protons and neutrons
42
What element group has the most similar properties?
Lithium and Sodium
Lithium and Beryllium
Carbon and Boron
Hydrogen and Helium
43
the charged spots on a polar molecule are called
crystals
extinsives
dipoles
adjents
44
What is the maximum number of electrons that the
3rd
shell can hold on the Bohr diagram?
2
32
18
8
45
Which state of matter is easiest to compress?
liquid
gas
no states of matter are easy to compress
solid
46
Which scientist placed the nucleus at the center of the atom and electrons around in orbitals?
Ernest Rutherford
JJ Thomson
Albert Einstein
Niels Bohr
47
When an electron drops back back to the ground state it releases what?
radiation (light)
power
Electricity
Heat
48
_____________ is
the difference between a measurement and the true value or between two measured values
.
experimental error
actual error
percentage error
upps I did it again
49
Which noble gas has the largest radius?
Radon
Neon
Helium
Krypton
50
How many elements are in the diagram?
2
5
3
1
51
Which group is represented in this image?
metalloids
noble gases
nonmetals
halogens
52
Which has a larger radius: oxygen or fluorine?
fluorine
oxygen
53
Which greek philosopher pondered the smallest small? Determined that there had to be an atomos.
Democritus
Aristotle
Socrates
Plato
54
Hydrogen is a member of which group?
Alkaline earth metals
Noble gases
Nonmetals
Alkali metals
55
When an electron has absorbed energy and goes to a higher energy level it is called:
Ground
absorbed
Excited
exposed
56
The same elements that make up our Earth are the same as the universe.
False
True
57
The 3 in 3s
2
stand for what
number of electrons
stuff
energy level
orbital
58
Which alkali metal has the smallest radius?
Hydrogen
Francium
Lithium
Sodium
59
Substances include
compounds and mixtures
anything that can be separated physically
homogeneous and heterogeneous mixtures
elements and compounds
60
This term refers to the amount of energy required to remove an eletron from a neutral atom
electronegativity
ionization energy
Atomic radius
61
The majority of the elements in the periodic table are...?
Metalloids
Not elements
Metals
Non-metals
62
How many orbitals (zones not electrons) can be in the P block
5
3
1
7
63
Which part of the atom does not contribute (significantly) to the atoms mass?
proton
electron
neutron
atomic mass
64
Which of the following is NOT a property of metals?
gaseous at room temperature
Malleable
Conducts heat and electricity
Ductile
65
This term refers to an atom's ability to pull on electrons that are shared with another atom
electronegativity
Atomic radius
first ionization energy
66
What is the maximum number of electrons that the 1st shell can hold on the Bohr diagram?
18
32
2
8
67
Which element is this?
C
O
N
P
68
Which group is represented in this image?
Alkali metals
metalloids
halogens
Alkaline earth metals
69
What is a common property of the Noble gases?
The do not react
the can't exist on their own
their valence electrons split
they are highly reactive
70
Elements in the same group/family in the periodic table:
have different numbers of valence electrons
have the same atomic radius
chemically react the same
are always gases
71
Which group is represented in this image?
halogens
metalloids
nonmetals
noble gases
72
The reactivity increases down the group because...?
s-orbital electron is further from the nucleus and so easier to lose
They only have to lose one electron
They only have to gain one electron
Their 1e- is closer to the nucleus and so easier to lose
73
Which group is represented in this image?
post-transition metals
Transition metals
lanthanides
metalloids
74
What state of matter has particles that are very close and can move freely?
liquid
plasma
gas
solid
75
N and O make this type of bond
ionic
nonpolar covalent
metallic
polar covalent
76
a region of space that is described by shape that shows where the Electron is at
address
orbital
photon
electron cloud
77
What type of chemistry is used when people use medicine to control asthma?
organic
physical
analytical
biochemical
78
The rule/principle stating that the lower energy level must fill up first
aufbau principle (lowest first)
Newton's 2nd law of motion
Pauli exclusion principle (cw/ccw)
hund's (guy rule)
79
Which group is represented in this image?
actinides
post-transition metals
transition metals
lanthanides
80
True or false: Radius increases as you move down the periodic table
false
true
81
Solve: 333/3 in the correct amount of sig figs.
100
3
111
30
82
Na and Cl make this type of bond
polar covalent
ionic
metallic
nonpolar covelent
83
Which part of the atom has a positive charge?
electron
atomic mass
proton
neutron
84
Alkali elements react by...
Gaining one neutron
Losing one electron
Gaining one electron
Losing one neutron
85
Which part of the atom has a negative charge?
neutron
atomic mass
electron
proton
86
True or false: Radius increases as you move to the right on the periodic table.
true
false
87
What family would you find Silicon in?
Metals
Non-Metals
California
Metalloids
88
How many atoms are in the diagram?
5
3
1
20
89
Which element has only 5 electrons in its 3rd energy level (shell)?
Silicon
Nitrogen
Phosphorous
Arsenic
90
What element is this the Bohr model of? (6P, 4N, 6e)
Boron
Carbon
Beryllium
Sodium
91
When water is decomposed into hydrogen and oxygen, what is/are the reactant(s)?
water
hydrogen and oxygen
hydrogen
oxygen
92
Which group is represented in this image?
actinides
lanthanides
post-transition metals
transition metals
93
How many electrons in an atom with the electron configuration of 1s
2
2s
2
2p
6
3s
1
6
11
12
4
94
True or false: Electronegativity increases as you move to the right on the periodic table.
true
false
