SP19: Mock Exam 1 Chapter 1 and 2 Good Luck! · SP19: Mock Exam 1 Chapter 1 and 2 Good Luck! Just a...
Transcript of SP19: Mock Exam 1 Chapter 1 and 2 Good Luck! · SP19: Mock Exam 1 Chapter 1 and 2 Good Luck! Just a...
SP19: Mock Exam 1 Chapter 1 and 2 Good Luck! Just a reminder, don’t just use this mock exam for studying. This is a resource that will test your knowledge of what you already should know. Please, study note cards, chapter outlines, questions, ppts, and go to the SI room if you have questions. -Suzanne
1. Who proposed the plum pudding atomic diagram?
a. J.J. Thompson
b. Neils Bohr
c. Earnest Rutherford
d. Robert Millikan
e. Antoine Lavoisier
2. Most of the elements on the periodic table are:
a. Gases
b. Nonmetals
c. Metalloids
d. Metals
e. Chalogens
3. What kind of process would we consider burning ethanol to be?
a. Physical change
b. Chemical change
c. Nuclear change
d. Endothermic
e. None of the above.
4. How many significant figures are in 0.0053020?
a. Three
b. Four
c. Five
d. Seven
e. Eight
① - Plum Pudding model
- New : Bohr Model
- Gold foil Experiment
- Oil Droplet Experiment
- father ofModern Chemistry
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-
SsigfigstcpfziieTrailing
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SP19: Mock Exam 1 Chapter 1 and 2 Good Luck! Just a reminder, don’t just use this mock exam for studying. This is a resource that will test your knowledge of what you already should know. Please, study note cards, chapter outlines, questions, ppts, and go to the SI room if you have questions. -Suzanne
5. The data in the box below exemplifies the Law of Multiple Proportions. What is the number that should fit in the blank box?
a. 12 g
b. 19 g
c. 24 g
d. 30 g
e. 57 g
6. Acetone has a density of 0.7857 g/mL. What is the mass of 32.0 mL of acetone?
a. 32.0 g
b. 25.1 g
c. 40.7 g
d. 1.25 g
7. What is the mass, in hg, of an object that has a density of 4.72 g/mL and displaces 4.12 L of water?
a. 19446.4 hg
b. 194.46 hg
c. 194 hg
d. 1.94 x 104 hg
e. 1.944 x 10−4 hg
8. What is a subatomic particle?
a. Gamma radiation
b. Phlogiston
c. Alpha particle
d. Mole
e. Proton
Experiment Mass of Carbon Mass of Fluorine E1 12 g E2 36 g 57 g E3 108 g 171
12g 1997 →
O '
136,30%23*1,9742×3
M
O 1¥ Me 0.785791mix 32.0Mt
= 25.1424g
Ing .
-Tong --4120mF
g m.u.mg/mxxul20mX=
19,446.49×74=194.464
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SP19: Mock Exam 1 Chapter 1 and 2 Good Luck! Just a reminder, don’t just use this mock exam for studying. This is a resource that will test your knowledge of what you already should know. Please, study note cards, chapter outlines, questions, ppts, and go to the SI room if you have questions. -Suzanne
9. ___________ was responsible for discovering protons in 1911 using the Gold Foil Experiment.
a. JJ Thomson
b. Earnest Rutherford
c. Demetri Mendeleev
d. Neils Bohr
e. John Dalton
10. How many significant figures would be represented in your final answer after the calculation 52.67 + 103.2750?
a. Two
b. Four
c. Five
d. Six
e. Seven
11. T or F: A reaction is endothermic.
a. True
b. False
12. The number of significant figures in the number 0.0023404 is
a. 6
b. 5
c. 4
d. 3
e. 2
13. For the isotope Cl-37, the atomic number is?
a. 17
b. 20
c. 37
O
52.67
o sigmas
XDon't answer blowy Reaction type isn't specify
D5 sigfigs
O
O Chlorine is always going to be
atomic number 17 ble q the periodic table.
SP19: Mock Exam 1 Chapter 1 and 2 Good Luck! Just a reminder, don’t just use this mock exam for studying. This is a resource that will test your knowledge of what you already should know. Please, study note cards, chapter outlines, questions, ppts, and go to the SI room if you have questions. -Suzanne
d. 10
e. 11
14. What element is defined by the following information? [protons = 23, neutrons = 28]
a. Scandium
b. Nickel
c. Vanadium
d. Tin
e. Need more information
15. The _____ are vertical and the _____ are horizontal on the periodic table.
a. Metals – Nonmetals
b. Rows - Families
c. Periods – Groups
d. Groups – Periods
e. Rows – Groups
16. What is Avogadro’s Number?
a. 1 b. 1.60 x 10-19 c. 1.67 x 10-27 d. 6.022 x 1023 e. 2.22 x 1024
17. How many moles are in 581 grams of Li? a. 94 mol b. 132 mol c. 83.7 mol d. 591 mol e. 6.94 mol
18. What is the atomic symbol for the element with 20 protons, 25 neutrons, and 18 electrons?
a. 2025Ca18
b. 2045Ca18
c. 2045Ca2+
d. 4520Ca2+
AN
28X① Protons -
123JKatowice
number
:581
grams , # , 83.7 motorO gli 6.941g
, ,
- Be
Atomic Electrons are# aswell negative
SO with less electrons than
20+25 = Atomic Protons , element has a
C) 45%2mass charge .
20
SP19: Mock Exam 1 Chapter 1 and 2 Good Luck! Just a reminder, don’t just use this mock exam for studying. This is a resource that will test your knowledge of what you already should know. Please, study note cards, chapter outlines, questions, ppts, and go to the SI room if you have questions. -Suzanne
e. 2045Ca
19. How many molecules ar in 5 grams of H2O? a. 6.022 x 1023 molecules b. 5 molecules c. 1.67 x 1023 molecules d. 2.0 x 10-23 molecules e. None of the above
20. From the box below, there are three species (atoms and ions), I, II, III. Identify the atom or ion: I:______ II:____ ___ III:______
Atom Protons Neutrons Electrons
I 13 14 10
II 18 22 18
III 8 8 10
a. Al−1327 ; Ar18
40 ; O+816
b. Al−21327 ; Ar18
40 ; O−816 2
c. Al+21327 ; Ar18
40 ; O−816
d. Al−1327 ; Ar18
40 ; O−816
e. Al+31327 ; Ar18
40 ; O−2816
21. Which is NOT a Main-Group element? a. Lithium b. Magnesium c. Mercury d. Arsenic e. Fluorine
22. A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 4.71 g/mL, 4.73 g/mL, 4.98 g/mL, and 4.99 g/mL. IF the “actual value” for density of the sugar solution is 4.40 g/mL, which statement below best describes her results?
a. Her results are precise, but not accurate b. Her results are accurate, but not precise c. Her results are both precise and accurate d. Her results are neither precise nor accurate e. It isn’t possible to determine with the information given
23. What is the mass, in kilograms, of 6.00 moles CF4? a. 6.82 x 10-5 kg b. 6.82 x 105 kg
H2O147+16=18 g/mol
5grams lmol 6.022×-10%101=1.673×1023x
- x -
O Hao 18g Imd infzhfms
Element27
+3
* = AtAl 13
Towar -160-28
O
O
0
-
12+19147=88.0 glmol
6. Oomolx ¥09 x 9g .. 0.528kg or 5.28×10
"
SP19: Mock Exam 1 Chapter 1 and 2 Good Luck! Just a reminder, don’t just use this mock exam for studying. This is a resource that will test your knowledge of what you already should know. Please, study note cards, chapter outlines, questions, ppts, and go to the SI room if you have questions. -Suzanne
c. 5.28 x 10-1 kg d. 5.28 x 101 kg e. 1.86 x 10-1 kg
24. The correct symbol for the isotope of the element that has 31 protons, 31electrons, and 40 neutrons is:
a. 3162Ga
b. 3171Ga
c. 4062Ga
d. 3131Ga
e. 3153Ga
25. How many grams are in 2 mol C2H5N2? a. 17 g b. 20 g c. 23 g d. 62 g e. 114 g
26. Deposition is the change of a ________ to a _______. a. Solid to Gas b. Gas to Solid c. Liquid to Gas d. Gas to Liquid e. Liquid to Solid
27. The quantity ______ L is the same as 300 μL. a. 3000000 b. 30000 c. 0.0003 d. 0.000003 e. 3
28. True or false. Robert Millikan proposed that all things are composed of tiny building blocks.
29. A _________ is a positively charged ion, while a(n) ________ is a negatively charged ion.
30. Define the difference between a homogeneous mixture and pure substance. Give examples.
31. Describe the Gold Foil Experiment – who conducted it, how was it conducted, what were the results, what were the ramifications and significance of the results?
0
no
Atomic Mass = 3ft ¥0 = 71-
Ga① Atomic Number = Protons
-
-31g
( 12 x 2) t ( I x 5) t (14×2) =
24 t 5 t 28 = 57g I mid
2 mid× -579=114 g of Cattso a
Ca Hs Na I mot
O
O
300Wh x ¥ =3. 00 NO
"
LI uh
O or O.
0003
O -
John Dalton
cation anion
Homogeneous mixture is composed of more than one pure substance that can be
Separated by physical methods . E.g . Salt water
Pure substances can't be separated or split by physical methods, chemically bonded 2 or more elements .
E. g . Hao or Na U
Earnest Rutherford and his 2 students conducted the experiment . Alpha particles were shot
at a sheet of gold foil .Some of the particles scattered , proves there's a dense positively charges
within the atom '
g.
Ii÷ ÷!!!÷ nuclear atomic model