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

:

-

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

O

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