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Chemistry FINAL EXAM

Total questions: 75

Worksheet time: 2hrs 56mins

Name
Class
Date
1.
How many significant figures: 216 m
a)
1
b)
2
c)
3
d)
0
2.

How many significant figures does the following number have: 0.002040

a)

6

b)

4

c)

3

d)

1

3.

Calculate 1.23 m x 0.89 m and give your answer with the correct number of significant figures. (Remember your rounding rules)

a)

1.0 m2

b)

1.1 m2

c)

1.0947 m2

d)

1.095 m2

4.
Express the following in scientific notation:
.000457
a)
457 x 106
b)
457 x 10-6
c)
4.57 x104
d)
4.57 x 10-4
5.

What is the reading in the burette above?

a)

33.40 cm3

b)

33.4 cm3

c)

3.400 cm3

d)

34.60 cm3

6.

Which element is being depicted in the Orbital Diagram shown?

a)

magnesium

b)

argon

c)

fluorine

d)

neon

7.

How many electrons are present in the Orbital Diagram shown?

a)

7

b)

13

c)

3

d)

1

8.

Based on where a single electron is placed, the lowest energy electron in an atom is found in the ________ sublevel.

a)

1s

b)

2s

c)

2p

d)

3s

9.

What electron configuration matches an oxygen atom?

a)

1s22s22p63s2, 3p64s23d104p5

b)

1s22s22p4

c)

1s22s22p6

d)

1s22s22p63s23p64s23d1

10.

Which of the following is the electron configuration for Fluorine

a)
b)
c)
d)
11.
What are the states of matter?
a)
solid, liquid, and juice
b)
solid and liquid
c)
solid and gas
d)
solid, liquid, and gas
12.
Molecules are closest together in a 
a)
Solid
b)
Liquid
c)
Gas
d)
plasma
13.
Which of the following statements is NOT true of all different types of matter?
a)
They are made of atoms and molecules
b)
The particles are always in motion
c)
The particles always move at the same speed
d)
They are made of particles that are too small to see
14.
The steam coming off the pot of boiling water is an example of....
a)
a solid becoming a liquid
b)
a liquid becoming a solid
c)
a liquid becoming a gas
d)
a gas becoming a liquid
15.
At higher temperatures
a)
particles in an object have less energy
b)
particles in an object move faster
c)
a gas contracts
16.
Frank has an eraser. It has a mass of 4g, and a volume of 2cm3. What is its density?
a)
8 g/cm3
b)
2 g/cm3
c)
1/2 g/cm3
d)
24 g/cm3
17.

If an object is more dense than water, it will...

a)

Sink

b)

Float

18.
What is the volume of Spongebob Squarepants based on the displacement of the water in the graduated cylinder. 
a)
50mL
b)
52mL
c)
102mL
d)
2mL
19.

If all masses are 20g, which material has the GREATEST volume? (Volume = mass/density)

a)

Oil

b)

Kool-aid

c)

Sprite

d)

Vinegar

20.

What is the Volume of the box?

a)

100

b)

144

c)

124

d)

98

21.
What method is being used in this picture?
a)
Determining mass
b)
Finding the density
c)
Water displacement
d)
The triangle trick
22.
How many valence electrons are represented here?
a)
7
b)
5
c)
2
d)
8
23.

What are valence electrons?

a)

The total number of electrons in an atom

b)

The number of electrons in the outermost shell

c)

The number of electrons in the second shell

d)

The number of protons in the outermost shell

24.
Most elements will gain or lose electrons so that they end up with _______ valence electrons.
a)
2
b)
6
c)
8
d)
10
25.
How do positive ions form?
a)
by gaining electrons
b)
getting compliments
c)
by losing electrons
d)
gaining more protons
26.

Which is the correct Lewis dot for C?

a)

D

b)

E

c)

F

d)

G

e)

H

27.

According to what we've learned in class, silver has the following electron configuration

a)

[Kr] 5s2 4d9

b)

[Kr] 5s1 4d10

c)

[Kr] 5s2 5d9

d)

[Kr] 5s1 5d10

28.
What is the number of valence electrons for Krypton?
a)

10

b)

2

c)

8

d)

3

e)

5

29.

Which of the following shows a correct Lewis dot structure?

a)
b)
c)
d)
30.

What is the correct Lewis Dot Structure for ammonia NH3

a)
b)
c)
d)
31.

This is a Bohr Diagram of Aluminum. How many valence electrons does Aluminum have?

a)

3

b)

4

c)

5

32.

A wave with a large wavelength will have a ______ frequency and _____ energy

a)

high, low

b)

high, high

c)

low, high

d)

low, low

33.

What is the speed of light?

a)

3.0x108 ms

b)

3.0x108 m/s

c)

6.626x10-34 Js

d)

6.626x10-34 J/s

34.
What property of this wave is represented by the letter "A"
a)
amplitude
b)
crest
c)
trough
d)
wavelength
35.
Which wave in the diagram has the greatest frequency?
a)
1
b)
2
c)
3
d)
4
36.

If a wave has a greater frequency, what happens to the wavelength?

a)

increases

b)

decreases

c)

stays the same

37.

The lower the frequency the ______ the energy.

a)

higher

b)

lower

c)

neither, stays the same

38.

The frequency of violet light is 7.5x1014 Hz. What is its wavelength?

a)

4.0x10-7 m

b)

4.0x107 m

c)

2.25x1023m

d)

2.25x1023 Hz

39.

Shares electrons in order to fill an energy level

a)

Metallic bond

b)

Ionic bond

c)

Covalent Bond

40.

Generally occurs between metal and nonmetal

a)

Metallic

b)

Ionic

c)

Covalent

41.

What is a group

a)

Up and down row on the table

b)

Up and down column on the table

c)

Side to side row on table

d)

Side to side column on the table

42.

What is a period

a)

Up and down row on the table

b)

Up and down column on the table

c)

Side to side row on table

d)

Side to side column on the table

43.

What group is carbon in?

a)

1

b)

2

c)

13

d)

14

e)

15

44.

What is the name of group number 1?

a)

halogens

b)

noble gases

c)

alkali metals

d)

alkaline earth metals

45.

a unique number for each element that equals the number of protons in an atom of that element

a)

element name

b)

element symbol

c)

atomic number

d)

atomic mass

46.
Elements which are shiny, conduct electricity and heat are called
a)
metal
b)
nonmetal
c)
metalloid
d)
nonexistent
47.

Which element is similar to Li?

a)

Be

b)

K

c)

Fe

d)

I

48.
The atoms along the staircase are called 
a)
metals
b)
nonmetals
c)
metalloids
d)
noble gases
49.
How many protons are in this element?
a)
79
b)
196
c)
117
d)
Cannot be determined
50.
What identifies the element?
a)
Protons
b)
Neutrons
c)
valence electrons
d)
Nucleus
51.

Which shows the correct parts of the nucleus?

a)

Neutron and Electron

b)

Neutron and Proton

c)

Proton and Electron

d)

Proton, Neutron and Electron

52.

Which part of an atom has a negative charge?

a)

Proton

b)

Neutron

c)

Electron

d)

None of them

53.

Which part of an atom has a positive charge?

a)

Proton

b)

Neutron

c)

Electron

d)

None of them

54.

How many valence electrons does sulfur have?

a)

3

b)

6

c)

16

55.
What does malleable mean?
a)
able to be shaped
b)
will break easily
c)
can be used for wire
d)
is shiny
56.
What is the ability of a substance to allow heat, sound, or electricity to flow through it?
a)
Malleability
b)
Ductility
c)
Solubility
d)
Conductivity
57.

TRUE OR FALSE

Thermal conductors allow heat to be transferred through them.

a)

TRUE

b)

FALSE

58.

Which of the following does NOT differ in isotopes of the same element?

a)

mass number

b)

number of neutrons

c)

number of protons

d)

chemical properties

59.

In the following pair, are they isotopes or different elements.

Element x has 27 protons and 82 neutrons.

Element y has 27 protons and 83 neutrons.

a)

isotopes of same element

b)

different elements

60.
Most of the mass in an atom is made up of _____________________?
a)
protons and electrons
b)
protons and neutrons
c)
neutrons and electrons
d)
electrons and quarks
61.

Atoms of the same element which have a different number of neutrons are called _________________.

a)

ions

b)

isotopes

c)

quarks

d)

molecules

62.
What is the best explanation of VSEPR theory?
a)
It explains the shapes that electrons make around atoms when they repel
b)
It explains how many electrons fit into an element's valent shell
c)
It explains why electrons pair up
d)
It explains why electrons repel each other
63.
Which molecule would have this molecular geometry?
a)
BF3
b)
CH4
c)
PCl5
d)
CO2
64.
What molecule could this be? 
a)
H2O
b)
CCl4
c)
PCl5
d)
NaCl
65.

The VSEPR theory basically states that the shape of a molecule is based on the...

a)

nuclear attractions

b)

nuclear repulsions

c)

electrostatic attractions

d)

electron repulsions

66.

Match the following

a)
1.

Tetrahedral

b)
2.

Linear

c)
3.

Bent

d)
4.

Pyramidal

e)
5.

Trigonal Planar

67.

In Ionic compounds, the overall charge must equal

(a)  

68.

Write the chemical formula if the elements below formed compounds:

Calcium and Chlorine

a)

CaClCaCl  

b)

CaCl2CaCl_2  

c)

Ca2ClCa_2Cl  

d)

CaCl3CaCl_3  

69.

Write the chemical formula if the elements below formed compounds:

Lithium and phosphorous

a)

LiPLiP  

b)

Li3PLi_3P_{ }  

c)

Li2PLi_2P  

d)

Li2P3Li_2P_3  

70.
What two types of atoms make a covalent bond?
a)

2 Nonmetals

b)

1 Nonmetal & 1 Metal

c)

2 Metals

d)

2 Noble Gases

71.
What is the name of C3Cl8 ?
a)

Carbon octachloride

b)

Tricarbon octachloride

c)

Carbon trichloride

d)

Octacarbon trichloride

72.
What is the chemical formula for Tetrasulfur pentoxide?
a)
SO
b)
S4O
c)
S4O5
d)
S5O4
73.

What is the correct formula for Tin(IV) carbonate?

a)

SnCO3

b)

TiCO3

c)

Sn2(CO3)4

d)

Sn(CO3)2

74.

Which of the following is the correct Lewis dot between Rb and O?

a)
b)
c)
d)
75.
Which of the following is the correct Lewis structure for the compound PBr3?
a)
structure A
b)
structure B
c)
structure C
d)
structure D

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