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Final Exam Practice Test

Total questions: 81

Worksheet time: 2hrs 20mins

Name
Class
Date
1.

Which is a quantitative observation?

a)

There is an Oberweis cup

b)

The shake is gone

c)

There are red stripes

d)

There are 3 cows on the cup

2.

Which is an inference you can make?

a)

There are 6 beautiful people

b)

They planned to match their outfits

c)

They are going to go to take a nap

d)

They are wearing red eye masks.

3.

What is a Qualitative observation?

a)

There is a sparkly inner tube

b)

There is one water bottle

c)

There are zero people in the lake

d)

Ms. Hawkins and Snyders want to be at the beach

4.

Ms. Snyders loves science... is a(n)

a)

Inference

b)

QuaLITative Observation

c)

QuaNtitative observation

d)

Prediction

5.

The liquid in the graduated cylinder is blue.

a)

quantitative observation

b)

qualitative observation

c)

inference

d)

prediction

6.

The plant is tall and green, it must be healthy.

a)

qualitative observation

b)

inference

c)

quantitative observation

7.

Which is a prediction?

a)

There is a dog

b)

The dog made the mess

c)

There are feathers all over the floor

d)

The dog is going to get in trouble

8.
240 cm = ___________ m
a)
2400
b)
24
c)
2.4
d)
0.24
9.
1000 m = ___________ km
a)
100
b)
10
c)
1
d)
0.1
10.
0.57 mL = ___________ L
a)
5.7
b)
0.057
c)
0.0057
d)
0.00057
11.
3 km = ___________ mm
a)
30
b)
300
c)
3,000
d)
3,000,000
12.

Convert this number into scientific notation: 0.068

a)

6.9 x 106

b)

6.8 x 10-9

c)

6.8 x 10-2

d)

None of the above

13.

Convert this number into scientific notation: 950,000

a)

9.5 x 105

b)

9.5 x 10-9

c)

9.5 x 102

d)

None of the above

14.

How would you write 0.0005 in scientific notation?

a)

50 x 10-5

b)

5 x 10-4

c)

5 x 103

d)

.5 x 103

15.
How would you write 4.3756 x 104 in standard form?
a)
437,560,000
b)
0.00043756
c)
43,756
d)
4,3756
16.

Mrs. Gilbert used a microscope to measure the diameter of her pet's hair. She found that the diameter of the hair was 0.000054 meter. How is this number written in scientific notation?

a)

5.4 × 10⁻⁵

b)

5.4 × 10⁶

c)

5.4 × 10⁵

d)

5.4 × 10⁻⁶

17.
What is 2.0x 10-6 in standard notation?
a)
200,000
b)
2,000,000
c)
.000002
d)
.0000002
18.

Two identical strips of positively charged nylon are hung next to each other. What do you observe?

a)

The strips of nylon stick together.

b)

A static charge jumps from one to the other.

c)

The strips of nylon repel each other.

d)

One strip will move while the other stays put.

19.

Which of the following is a good conductor?

a)

Copper

b)

Glass

c)

rubber

d)

wool

20.

During a physics lab, a plastic strip was rubbed with cotton and became positively charged. The correct explanation for why the plastic strip becomes positively charged is that ...

a)

the plastic strip acquired extra protons from the cotton.

b)

the plastic strip acquired extra protons from the charging process 

c)

protons were created as the result of the charging process

d)

the plastic strip lost electrons to the cotton during the charging process 

21.
Insulators are different than conductors in that insulators ____.
a)
do not contain electrons or protons 
b)
 do not contain any charge
c)
have a weaker affinity for electrons 
d)
do not allow charge to freely move 
22.

When an object gains electrons it becomes __________

a)

Neutral

b)

Positively charged

c)

Negatively charged

23.

An atom of oxygen has 8 protons and 10 electrons, this means the atom is ____________

a)

positively charged because it has excess electrons

b)

negatively charged because it has excess electrons

c)

positively charged because it has a deficiency of electrons

d)

negatively charged because it has a deficiency of electrons

24.

After a balloon is rubbed against wool, the two objects will ________ each other because they have ___________ charges

a)

attract; like

b)

attract, opposite

c)

repel; like

d)

repel; opposite

25.

What is the name of the particle that is being transferred from one atom to another?

a)

Proton

b)

Neutron

c)

Electron

d)

Positron

26.
When a balloon is rubbed on a sweater in what direction do the electrons move?
a)
From the sweater to the balloon
b)
From the balloon to the sweater
c)
They do not move
d)
They travel to the groud
27.

Which of the following is an insulator of electricity?

a)

copper

b)

silver

c)

Glass

d)

aluminum

28.
Value representing the number of protons in an element
a)
Atomic Mass
b)
Mass Number
c)
Valence Electrons
d)
Atomic Number
29.
Subatomic particles that are neutral in charge
a)
Neutrons
b)
Protons
c)
Nucleus 
d)
Electrons
30.
Which two subatomic particles make up the nucleus of an atom?
a)
Protons and Electrons
b)
Neutrons and Electrons
c)
Electrons and Protons
d)
Protons and Neutrons
31.

What is the mass number?

a)

the number of protons in the nucleus

b)

the number of protons and neutrons in the nucleus

c)

the number of neutrons in the nucleus

d)

the number of protons and electrons in the atom

32.
In order for an atom to be neutral what has to be true?
a)
The atom has more protons than neutrons
b)
The atom has more neutrons than protons
c)
The atom has the same number of protons and neutrons
d)
The atom has the same number of protons and electrons
33.
What does the C represent?
a)
atomic mass
b)
atomic number
c)
element name
d)
chemical symbol 
34.

What does the 6 represent?

a)

Atomic mass

b)

atomic number

c)

chemical symbol

d)

element name

35.
How is the number of neutrons in the nucleus of an atom calculated?
a)
Add the number of e- and p+ together
b)
Subtract the number of e- from p+
c)
Subtract the number of p+ from the mass number
d)
Add the mass number to the number of e-
36.

An atom has 10 protons, 15 neutrons and 10 electrons what is its mass number.

a)

20

b)

10

c)

35

d)

25

37.
The atomic number of an element that has 9 protons, 9 electrons, and 10 neutrons is _____.
a)
9
b)
10
c)
19
d)
28
38.

An element with a mass number of 11 and an atomic number of 5 has how many neutrons?

a)

11

b)

5

c)

6

d)

16

39.

An atom has an atomic number of 15 and a mass number of 31. How many protons are there in the atom?

a)

15

b)

31

c)

16

d)

47

40.

Which of the following determines the identity of an element?

a)

number of protons

b)

atomic mass

c)

number of neutrons

d)

number of shells

41.
What is the atomic number of the atom pictured? 
a)
9
b)
10
c)
18
d)
19
42.
The mass of this particle is so small that it is not counted.
a)
proton
b)
electron
c)
neutron
d)
quark
43.
As you move down the periodic table atoms get bigger.  This is because ____________.
a)
The atoms have more mass.
b)
The atoms have more protons.
c)
The atoms have more energy levels
d)
The atoms have more nuetrons
44.
As you move across the periodic table atoms tend to get smaller because, ______________.
a)
the atoms have more mass.
b)
the atoms have less mass
c)
the atoms have more protons.
d)
the atoms have less electrons.
45.
The atom with the largest atomic radius in Group 18 is - 
a)
Ar
b)
He
c)
Kr
d)
Rn
46.

Which statement correctly and completely identifies a trend?

a)

Atomic radius decreases across a period and increases down a group.

b)

Electronegativity decreases across a period and increases down a group.

c)

Atomic radius increases across a period and decreases down a group.

47.
Order the following in increasing atomic radii: 
Ra, Be, Ca, Rb, H
a)
Ra, Be, Rb, H, Ca
b)
Rb, H, Ca, Be, Ra
c)
Ra, Rb, Ca, Be, H
d)
H, Be, Ca, Rb, Ra
48.
Electronegativity is...
a)
the ability of an atom to attract/ accept electrons
b)
the ability of an atom to lose electrons
c)
the energy required to remove an electron from a specific atom
d)
how easy it is to make friends. 
49.

Which of the following will have a higher electronegativity than arsenic (As)?

a)

Carbon (C)

b)

Neon (Ne)

c)

Antimony (Sb)

d)

Germanium (Ge)

50.

Which of the following halogens has the greatest electronegativity?

a)

Chlorine (Cl)

b)

Bromine (Br)

c)

Iodine (I)

d)

Astatine (At)

51.
The element with the lowest electronegativity in Period 3 is - 
a)

Na

b)

Cl

c)

Al

d)

Mg

52.
What types of charges attract?
a)
Positive and Positive
b)
Positive and Neutral
c)
Negative and Neutral
d)
Positive and Negative
53.
How are covalent bonds explained?
a)
When one atom takes the other atom's electron
b)
When the atom shares an electron with an another atom
c)
When the two nucleus merge
d)
When the neutrons leave the nucleus
54.

Chlorine has 7 electrons in its outer shell. How many covalent bonds does it form?

a)

1

b)

2

c)

3

d)

4

55.

Oxygen has 6 electrons in its outer shell. How many covalent bonds does it form ?

a)

1

b)

2

c)

3

d)

4

56.

How many ATOMS are in one molecule of CH4?

a)

2

b)

4

c)

5

d)

3

57.

What is the correct formula for this molecule?

a)

CH

b)

C1H4

c)

CH4

d)

C4H

58.

What is the group number of oxygen?

a)

2A

b)

3A

c)

6A

d)

6B

59.
How many valence electrons does nitrogen have?
a)
3
b)
2
c)
5
d)
1
60.
What is the correct formula for this molecule?
a)
NH
b)
N3H
c)
NH3
d)
NH4
61.
How many electrons should Lithium have around its Lewis dot model?
a)
1
b)
2
c)
3
d)
4
62.
Which of the following is the correct Lewis dot structure for the molecule fluorine (F2)?
a)
A
b)
B
c)
C
d)
D
63.
If electrons are shared unequally then the bond is....
a)
Non-polar covalent
b)
Ionic
c)
Non-polar ionic
d)
Polar covalent
64.

Which is the correct structure for NH3?

Pictures correspond with a-d.

a)

Option A.

b)

Option B.

c)

Option C.

d)

Option D.

65.

Which is the correct molecular structure for carbon dioxide CO2?

a)
b)
c)
d)
66.
How are ionic bonds formed?
a)
Transfer of electrons
b)
Sharing of electrons
67.

Same charges repel, opposites------

a)

avoid

b)

attract

c)

push

d)

pull

68.
What is a valence electron?
a)
The sum of neutrons and protons.
b)
The # of electrons in the last shell.
c)
A type of bond.
d)
A popular compound.
69.
Group numbers on the periodic table help us determine 
a)
The number of valence electrons
b)
Color of the elements
70.
F2
a)
Polar 
b)
Nonpolar 
71.
What type of bond is shown in this image?
a)
Ionic
b)
Polar Covalent
c)
Nonpolar Covalent
d)
Van der Waals Force
72.

A molecule that has a partial positive end and a partial negative end because of unequal sharing of electrons is a _______________.

a)

nonpolar molecule

b)

polar molecule

c)

ionic compound

d)

metalic compound

73.

Atoms of a non polar molecule share their atoms ___________.

a)

Equally

b)

Unequally

74.

This could be the dot diagram of

a)

Mg

b)

Cl

c)

C

d)

O

75.

How many valence electrons does Aluminum Have?

a)

1 Valence electron

b)

2 Valence electron

c)

3 Valence electron

d)

4 Valence electron

e)

5 Valence electron

76.

How would you draw a Lewis dot diagram for Magnesium?

a)
b)
c)
d)
77.

An object carrying 1.2x1011 e charge is placed near an object B carrying a charge of 3.48x1010. If the two objects are 10 cm apart, find the force of interaction between the two objects. Given K=2.3x10-21. F=K.(qA. qBr2)F=K.\left(\frac{qA.\ qB}{r^2}\right)

a)

0.9604 mN

b)

0.09604 mN

c)

9.604mN

d)

9.604x1021

78.

When distance increases, electrostatic force ____________

a)

stays the same

b)

decreases

c)

increases

79.

When distance decreases, electrostatic force ____________

a)

decreases

b)

stays the same

c)

increases

80.
The plastic covering is there to:
a)
Provide a conductor for electrical energy to flow.
b)
Provide an insulator so that electrical energy will not pass outside of the wires.
c)
Provide a conductor so that electrical energy can NOT flow.
d)
Provide an insulator so that electrical energy can flow.
81.

The Electric Force is stronger when charges are...

a)

more

b)

less

c)

equal to each other

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