neils bohr discoveries: (1)

electrons orbit the nucleus in paths called orbitals

how to recognize chemical change

transfer of energy,change color,gas production,precipate formed

what was daltons findings? (2)

atoms of the same element are identical

when all the points are next to eachother

when all the points are centered

anything with mass or volume, you

What was daltons finding? (1)

elements are made of particles called atoms

modern research which allows new discoveries using specific methods

what does quantum mean?

the amount of energy needed to jump from one level to the next

what was daltons findings? (3)

atoms of dif elements can combine to form a compound with whole num ratios

the smallest particle in nature

filtration and distillation are…

methods developed in ancient alchemy

2+ elements with the same # of protons and electron but dif # of neutons

how did Rutherford go about his experiment

he shot alpha rays through a gold foil

shrodinger discovered:

the math for shape of protons and electrons - the quantam mechanical number

what is inorganic chem?

chem that does NOT involve carbon

lord Rutherfords conclusions: (2)

a nucleus of an atom is positivly charges

what was daltons findings? (4)

chemical reactions happen when dif elements join, seperate, etc. x j happen

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Chem Midterm Review Chapter 1 & 2

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Questions 76

Answers

1
the 2 major classes of research in chem are 1: Organic Chemistry and Inorganic Chemistry
False
True
2
what is a plasma
rebbetzin victor e
an irreversable change
vapor
super heated gas
3
neils bohr discoveries: (1)
isotopes
protons orbit the nucleus in paths called orbitals
electrons orbit the nucleus in paths called orbitals
atomic number formula
4
how to recognize chemical change
transfer of energy,change color,gas production,precipate formed
you drink it
transfer of energy,change in flavor,gas production,precipate formed
transfer of energy,change color,gas production,potatos formed
5
what was daltons findings? (2)
plum pudding model
atoms of the same element are identical
the electron
all elements are made of molecules
6
what is precision?
when all the points are next to eachother
when the point are all NOT next to eachther
when all the point are centered
when all the points are scattered
7
Density forumla: D=M/V
False
True
8
What is accuracy?
when all the points are centered
When all the points are NOT next to each other
When all the points are next to eachother
when all the point are scattered around
9
who came up with scientific meathod?
newton
joe biden - he’s certainly old enough
boyle
lavosier
10
what are the 2 major classes of research?
organic and inorganic
rishonim and acharonim
mrs. swerdloff and mrs. herzog
pure and applied
11
Which is NOT one of the 5 basic areas of chemistry
Biochemistry
Organic
Analytical
Pure
12
percent error is trying to figure out if ur mistake was a big deal or not
False
True
13
what is matter?
a hard solid
a thought
anything with mass or volume
you
14
what is a bose condensate?
a vapor
silent but deadly
a super cooled gas
a super heated gas
15
the atomic number of an atom is the sum of Protons + Neutrons
False
True
16
What was daltons finding? (1)
lead doesnt ever change into gold
H2O is a ratio of 2 hydrogens to 1 oxygen atom
elements are made of particles called molecules
elements are made of particles called atoms
17
Who did the gold foil experiment
Mordy Shap
Lord Rutherford
Boyle
Dalton
18
what is the relative mass of an electron
1/1890 of a proton
1
-1
0
19
what is technology?
figs and apples
the newest smartphone
enough data to predict what happens next
modern research which allows new discoveries using specific methods
20
what does quantum mean?
the weight of an item
the amount of energy needed to jump from one level to the next
the max number of electrons
the number of orbitals
21
celsius to kelvin
K = C
K = C - 273
k = c + 436
k = C + 273
22
what was daltons findings? (3)
atoms
chemical reactions can just happen
disporoved plum pudding model
atoms of dif elements can combine to form a compound with whole num ratios
23
experiment is the 2nd step to the scientific meathod
False
True
24
an atom is:
something with a negative charge
multiple molecules put together
the smallest particle in nature
the first human
25
filtration and distillation are…
the conservation of mass
methods developed in the middle ages
methods developed in ancient alchemy
how to make poland spring water good
26
what is an isotope?
2+ elements with the same # of protons and electron but dif # of neutons
the reason that the color changes as you heat it
toxic chemicals
Beryllium
27
how did Rutherford go about his experiment
he shot plum pudding though alpha rays
he shots plum pudding though gold foil
he shot alpha rays though a plum pudding
he shot alpha rays through a gold foil
28
Lord Rutherford expected the electrons to shoot back, proving the plum pudding idea
False
True
29
what is a homogeneous mixture
a rainbow
completely uniform
completely un-uniform mixture
a change that is not reversable
30
compounds are substances with…
short people genes
2 or more elements
a precipatate
3 or more elemtns
31
Ice has more mass than water
True
False
32
shrodinger discovered:
neutrons
the nucleus is nearly empty
the math for shape of protons and electrons - the quantam mechanical number
each orbital has a dif energy level
33
what is inorganic chem?
chem that does NOT involve carbon
chem with carbon
chem with bugs
chem for money
34
in 2N^2, what is “n”
the number of orbitals
the max number of electrons
the 14 number in the alphabet
the principal quantam level
35
in 2N^2, what is “n^2”
the 28th number in the alphabet
the max number of electrons
the number of orbitals
the principal quantam level
36
percent error = experimental value - accepted value
False
True
37
who said that atoms cant be broken
Lord Rutherford
Democritus
J. J. Thompson
Dalton
38
What is Organic Chem
Chem that DOES involve carbon
chemistry lishma
donald trumps hair dye
chem that does NOT involve carbon
39
lord Rutherfords conclusions: (2)
a nucleus of an atom is negatively charged
a nucleus of an atom is positivly charges
the formula for an atomic number
amu = atomic mass unit
40
Chemistry is all abt the electrons
True
False
41
there are 3 reasons to study chemistry
False
True
42
a heterogeneous mixture is un-uniform
True
False
43
diatomic elements are
an element with 3 atoms
an element with 1 atom
an element to hair dye
an atom with 2 atoms
44
what is the relative mass o a neutron
0
1
-1
1/1890
45
J. J. Thompson discovered the proton
False
True
46
what was daltons findings? (4)
lead can change into gold if you wish enough
atoms cant be broken
chemical reactions happen when dif elements join, seperate, etc. x j happen
atoms of them same elements can look dif
47
absolute zero is…
0 degrees Kelvin
all of the above
the coldest temperature possible
when molecules and atoms stop moving
48
the isotope that the atomic mass is closest to hte actual elements AM is LEAST abundant
True
False
49
what is the first step to the scientific meathod?
observation
hypothesis
hakuna matata
lavosier
50
how many electrons are in the d orbital
10
2
14
6
51
what is physical chem?
mechanizms - how things work
chem for money
the science behind gym class
study of life
52
neils bohr discoveries: (2)
a typical atom has mostly empty space
the density formula
protons and nuetrons are in teh nucleus, electrons spin around it
electrons can jump orbitals by releasing or absorbing energy
53
how many electrons are in the s orbital
14
2
6
10
54
what is analytical chemistry?
what things are made up of
what they put in The Pink Drink
matter composed of protons, neutrons, electrons
mechanizms and how things work
55
how many electrons are in the f orbital
2
14
6
10
56
what did lord Rutherford try to prove
that an electron is 1/1890th of a proton
the plum pudding theory
that atoms are indivisble
G-d
57
J. J. Thompson…
discovered protons
Discovered atoms
Shot electrons through gold foil
discovered electron
58
an element is the simplest form of matter which has a unique set of properties
True
False
59
What is 2n^2
the principal quantam level
the number of orbitals
the 28th number in the alphabet
the max number of electrons
60
how many electrons are in the p orbital
10
2
6
14
61
why are some atomic masses not whole numbers?
flambozzles
density
isotopes
plums
62
precision is when the point are next to each other
False
True
63
what are the 3 isotopes of hydrogen
Hydrogen, Deuterium, Tritium
Hylauronic, divissins, beryllim
Hydrogen, Darmastatium, Titanium
H2O, D2O, T2O
64
CHEM IS ALL ABOUT THE PROTONS
False
True
65
CHEMISTRY IS ALL ABT THE PROTONS
False
True
66
Alchemy is…
ancient chemistry which began with trying to turn babies to statues
ancient chemistry which began with trying to turn lead to gold
formation of a precipitate
Mollys golden hour
67
biochemistry is Miri’s future career path
False
True
68
the 5 states of matter: solid, liquid, gas, plasma, and blood
True
False
69
error =
experimental value x accepted value
experimental value + accepted value
experimental value - accepted value
experimental value / accepted value
70
phases are different layers in homogeneous mixtures
False
True
71
how to differentiate between 2 dif elements
if its zen
if its reversable or irreversable
intensive and extensive
color, mass, boiling/freezing point
72
Lord Rutherfords experiement proved the plum pudding theory
True
False
73
lord rutherfords conclusions: (3)
the 3 isotopes of h2o
the definition of insanity
Protons and neutrons are in the nuclues, electrons spin around the nucleus
protons and electrons are in the nucleus, neutrons spin around the nucleus
74
The seven diatomic elements are: Hydrogen, Nitrogen, Oxygen, Florine, Bromine, Iodine, and Chlorine
True
False
75
biochem is the study of rocks
False
True
76
lord rutherfords conclusions: (1)
a typical atom is made of mostly empty space
an atom is composed of protons, neutrons, and electrons
a typical atom has almost no empty space
electrons orbit the nucleus on paths called orbitals

Chem Midterm Review Chapter 1 & 2 Flashcards | StudBud