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Chemistry Midterm
Chemistry Midterm
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#ChemistryMidterm #Chemistry #Midterm
Flashcards
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Questions
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Answers
1
What is chemistry?
the difference between a chemical and physical property
matter, volume, and length
the study of the composition, structure, & changes in matter
something that has mass and volume
2
What happens to the mass and identity of atoms undergoing beta decay?
there is no such thing as beta decay
mass decreases by four & the atomic number decreases by two
mass does not change & the atomic number does not change
mass does not change & the atomic number increases by one
3
What is the relationship between particles in a gas?
particles are loosely packed
particles are rigidly packed together
particles can be very far apart
particles are packed closely together
4
What is velocity?
speed of the wave
amount of mass in a wave
distance between waves
number of waves per second
5
What does the atomic number tell you about an atom?
number of protons and neutrons in an atom
number of electrons in the electron cloud
number of isotopes created by the atom
number of protons and electrons in an atom
6
What are cations and which atoms make them?
positive ions formed by the lose of electrons
negative ions formed by the gain of electrons
negative ions formed by the lose of electrons
positive ions formed by the gain of electrons
7
How many orbitals are in the s sublevel?
7
1
3
5
8
What is the charge, mass, and location of the proton?
positive, 1 amu, nucleus
neutral, 1 amu, nucleus
positive, 0 amu, nucleus
negative, 0 amu, cloud
9
What is matter?
how much space an object takes up
something that has mass and volume
the molecules in a substance
how long an object is
10
Find an atom that forms an ion with +3 charge and has the smallest ionization energy
Tl
Pb
B
Si
11
How many neutrons does an atom with a mass of 37 and 15 protons have?
15
12
37
22
12
What is an isotope?
different number of neutrons
different number of protons
different number of electrons
another word for an atom
13
How does Carbon form an ion and what ion does it form?
+2
-4
-3
+4
14
Who is John Dalton and what did he do for the atom?
He discovered electrons and their negative charge
He proved that the positive nucleus was in the atom
He created a theory consisted of four simple parts
He found out what the location of electrons was based on
15
Find an atom that is an alkali metal with the greatest ionization energy
Fr
Be
H
Li
16
What is the metric unit for volume?
miliLiters
centimeters cubed
meters
grams
17
What do you do with excess chemicals?
ask if any other table needs the chemicals
pour any and all chemicals down the sink and wash the beaker
put the chemicals back where you found them
dispose of the chemicals properly
18
How do you heat a test tube with a bunsen burner?
point the test tube away from other people
move the test tube back and forth
keep the test tube pointed towards the room
hold the test tube steady over the fire
19
What is the metric unit for mass?
meters
Kilograms
grams
liters
20
What is the trend of ionization energy down the periodic table?
decrease
increases on the left then decreases on the right
decreases on the left then increases on the right
increase
21
What is the trend of atomic radius down the periodic table?
increase
decrease
decreases on the left then increases on the right
increases on the left then decreases on the right
22
What are anions which atoms make them?
negative ions formed by the lose of electrons
positive ions formed by the gain of electrons
negative ions formed by the gain of electrons
positive ions formed by the lose of electrons
23
Who is Rutherford and what did he do for the atom?
He created a theory consisted of four simple parts
He discovered electrons and their negative charge
He found out what the location of electrons was based on
He proved that the positive nucleus was in the atom
24
What is the relationship between particles in a solid?
particles can be very far apart
particles are packed closely together
particles are loosely packed
particles are rigidly packed together
25
What is the metric unit for length?
meters
miliLiters
grams
Kilograms
26
Find an atom that is the most reactive element with 6 valence electron
F
S
N
O
27
What is accuracy?
the measurements are very close to each other
the measurements are based on senses
the measurements are spaced out and wrong
the measurements are close to the correct value
28
What is a physical property?
changes in color, odor, or energy
can be observed or measured without changing the matter
changes that affect the form of a chemical substance
any of the properties that become evident after a reaction
29
What is the trend of atomic radius across the periodic table?
decrease
decreases on the left then increases on the right
increases on the left then decreases on the right
increase
30
What is a heterogeneous mixture?
a mixture where the solutions are uniform in composition
a mixture where you can see the individual parts
the difference between a physical and chemical property
data that uses numbers
31
Find an atom that is the largest metal
Ta
Fr
F
Ra
32
Which of the following is an example of a heterogeneous mixture?
Pizza
Blood
Milk
Kool-Aide
33
What is frequency?
number of waves per second
speed of the wave
distance between waves
amount of mass in a wave
34
Which of the following does not affect an atom's ionization energy?
oxidation number
atomic radius
nuclear charge
shielding effect
35
What happens to the mass and identity of atoms undergoing alpha decay?
there is no such thing as alpha decay
mass does not change & the atomic number increases by one
mass decreases by four & the atomic number decreases by two
mass does not change & the atomic number does not change
36
What is the trend of electronegativity down the periodic table?
decreases on the left then increases on the right
increase
increases on the left then decreases on the right
decrease
37
Who is Bohr and what did he do for the atom?
He found out what the location of electrons was based on
He proved that the positive nucleus was in the atom
He created a theory consisted of four simple parts
He discovered electrons and their negative charge
38
Find an atom that is the metalloid with the smallest electronegativity and 5 energy levels
Sb
B
Te
Pb
39
How many valance electrons are in carbon?
2
6
4
3
40
What is precision?
the measurements are very close to each other
the measurements are observations based on senses
the measurements are both wrong and very spaced out
the measurements are close to the correct value
41
What is the trend of electron affinity down the periodic table?
increases on the left then decreases on the right
decrease
increase
decreases on the left then increases on the right
42
Is light matter?
Yes
No
43
What is the trend of ionization energy across the periodic table?
increases on the left then decreases on the right
increase
decrease
decreases on the left then increases on the right
44
What is the mass of an atom with 12 protons, 15 neutrons, and 10 electrons?
10
22
15
27
45
What is the charge, mass, and location of the neutron?
negative, 0 amu, cloud
neutral, 1 amu, nucleus
positive, 1 amu, nucleus
positive, 0 amu, nucleus
46
What is the charge, mass, and location of the electron?
negative, 0 amu, cloud
neutral, 1 amu, nucleus
positive, 1 amu, nucleus
positive, 0 amu, nucleus
47
What is wavelength?
distance between waves
number of waves per second
speed of the wave
amount of mass in a wave
48
What is electronegativity?
the change of an atom when electrons are added/lost
the tendency of an atom to attract electrons when bonding
how reactive an element is
the energy it takes to remove an electron
49
What is a chemical property?
any of the properties that become evident after a reaction
can be observed or measured without changing the matter
changes in color, odor, or energy
changes that affect the form of a chemical substance
50
What is the trend of electronegativity across the periodic table?
decrease
increase
increases on the left then decreases on the right
decreases on the left then increases on the right
51
What happens to the mass and identity of atoms undergoing gamma decay?
mass does not change & the atomic number does not change
there is no such thing as gamma decay
mass decreases by four & the atomic number decreases by two
mass does not change & the atomic number increases by one
52
What is the most reactive nonmetal?
Iodine
Fluorine
Francium
Lithium
53
How many orbitals are in the p sublevel?
3
5
1
7
54
What does the atomic mass tell you about an atom?
number of isotopes created by the atom
number of electrons in the electron cloud
number of protons and electrons in an atom
number of protons and neutrons in an atom
55
How many orbitals are in the d sublevel?
7
3
1
5
56
Who is JJ Thompson and what did he do for the atom?
He discovered electrons and their negative charge
He proved that the positive nucleus was in the atom
He created a theory consisted of four simple parts
He found out what the location of electrons was based on
57
What is ionization energy?
the energy it takes to remove an electron
the tendency of an atom to attract electrons when bonding
the change of an atom when electrons are added/lost
how reactive an element is
58
Find an atom that has valance electrons in the 4p subshell and the greatest electronegativity
Pr
Kr
Br
Ar
59
What is the shape of the d sublevel?
complex
dumbell
sphere
clover
60
What is a homogeneous mixture?
the difference between a chemical and physical change
a mixture where you can see the individual parts
data without using numbers
a mixture where the solution is uniform in composition
61
What is the relationship between particles in a liquid?
particles are rigidly packed together
particles can be very far apart
particles are packed closely together
particles are loosely packed
62
Which of the following is not evidence of a chemical change?
production of a gas
separate mixtures
change in energy
change in color
63
What is the most reactive metal?
Lithium
Iodine
Francium
Fluorine
64
What is the trend of electron affinity across the periodic table?
increase
increases on the left then decreases on the right
decrease
decreases on the left then increases on the right
65
What is the shape of the p sublevel?
complex
clover
dumbell
sphere
66
What is an ion?
another word for an atom
different number of electrons, causing a charge
different number of protons, causing a charge
different number of neutrons
67
What is the shape of the s sublevel?
dumbell
sphere
clover
complex
68
How do you light a bunsen burner?
light the match slowly, then turn on the gas
turn on the gas and the match at the same time
turn on the gas then light the match quickly
keep the match right above the gas, then turn the gas on
69
Is air matter?
Yes
No
70
What color should the bunsen burner flame be?
bright yellow
blue
orange
light pink
