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Big Final Exam Review

Total questions: 60

Worksheet time: 1hrs 5mins

Name
Class
Date
1.

A substance in a chemical reaction that is completely consumed first, thus limiting the amount of product formed. 

a)

excess reagent          

b)

solvent

c)

limiting reagent 

d)

catalyst

2.
Write 3.2 x 103 in standard form.
a)
3.200
b)
3200
c)
32000
d)
.0032
3.
Light travels at a rate of 186,000 miles per second.  Write this number in scientific notation.
a)
1.86 x 105
b)
1.86 x 104
c)
18.6 x 104
d)
186 x 103
4.

Round the following quantity to 6 sig. figs.

0.013479265 mL

a)

0.013479 mL

b)

0.0134793 mL

c)

0.013479300 mL

d)

0.01348 mL

5.

If you react 48 grams of this isotope of titanium (Ti) with 22 grams of oxygen (O2), which substance is the limiting reagent?

a)

Titanium

b)

Oxygen

c)

Both are limiting

d)

Neither is limiting

6.

Isotopes of an element have a different number of...

a)

Protons

b)

Neutrons

c)

Electrons

d)

Mass

7.
What atom matches this electron configuration?
1s22s22p63s23p64s23d10
a)
Zinc
b)
Copper
c)
Nickel
d)
Germanium
8.

Which area on the periodic table represents the electrons in the "d" sublevel (d orbitals)?

a)

representative elements

b)

columns 3-8

c)

rare earth elements

d)

transition elements

9.
The name of FeCl₂ is
a)
iron chloride
b)
iron (II) chloride
c)
iron (I) chloride
d)
iron dichloride
10.
What is the correct name for P₃Cl₆?
a)
Potassium chloride
b)
Phosphorous chloride
c)
Triphosphorous hexachloride
d)
Tetraphosphorous heptachloride
11.

What is the charge on the iron in: iron (II) oxide

a)

2+

b)

2-

c)

1+

d)

1-

e)

None of these.

12.
The most electronegative atom in the periodic table is:
a)
Fluorine
b)
Helium
c)
Neon
d)
Francium
13.
This is an example of a __________ bond.
a)
non-polar covalent
b)
polar covalent
c)
ionic
d)
metallic
14.

If you have 40 g of NaOH and 36.5 g of HCl, which is the limiting reagent in the reaction NaOH + HCl → NaCl + H2O?

a)

NaOH

b)

HCl

c)

Both are limiting

d)

Neither is limiting

15.
How many molecules are in 2.5 mol of NaCl?
a)
1.51x1023
b)
146
c)
4.15
d)
1.51x1024
16.
Is the following equation balanced?...
Al + O2 --> 2Al2O3
a)
Yes!
b)
No!
17.

What is the coefficient of HCl when this equation is balanced?
Mg +  __HCl --->  MgCl2 + H2

a)
1
b)
2
c)
3
d)
4
18.
2H2  +   O2  →  2H2O
How many moles of oxygen are consumed if 8 moles H2 are used?
a)
2
b)
4
c)
6
d)
8
19.
2Na + 2H2O → 2NaOH+ H2
How many grams of hydrogen are produced if 120 g of Na are available?
a)
5.2 g
b)
2.6 g
c)
690 g
d)
45 g
20.

2 NaClO3 (s) --> 2NaCl (s) +3 O2 (g)  
If 12.00 moles of NaClO3 and 10.00 moles of NaCl are mixed together, which is the limiting reagent and how many grams of O2 will be produced?

a)

NaClO3 is the limiting reagent, 256 g of O2

b)

NaCl is the limiting reagent, 576 g of O2

c)

NaClO3 is the limiting reagent, 288 g O2

21.

What is the volume of liquid in this cylinder?

a)

25 mL

b)

24.5 mL

c)

24.0 mL

d)

25.0 mL

22.
What would be the best way to measure the volume of a small rock?
a)
L x W x H with a ruler
b)
Put on triple beam balance
c)
Mass ÷ Volume
d)
Displacement method using graduated cylinder
23.

The Law of Conservation of mass states that

a)

mass increases after a reaction takes place

b)

mass decreases after a reaction takes place

c)

total mass stays the same after a reaction takes place

d)

mass can't be predicted

24.

Identify a chemical property of sodium:

a)

soft

b)

reacts with water

c)

malleable

d)

low melting point

25.
What is the density of a substance that has a mass of 84 g and a volume of 30 cm3?
a)
.36 g/cm3
b)
2.8 g/cm3
c)
54 g/cm3
d)
5 g/cm3
26.

In polar covalent bonds...

a)

Electrons are stolen

b)

Electrons are shared evenly

c)

Electrons are shared unevenly

d)

Electrons are transformed

27.

What is the name of group number 1?

a)

halogens

b)

noble gases

c)

alkali metals

d)

alkaline earth metals

28.

A row on the Periodic Table of Elements

a)

family

b)

period

c)

row

d)

isotope

29.

A grouping of elements based on similar chemical properties, arranged by columns in the periodic table; also known as a group

a)

family

b)

period

c)

row

d)

isotope

30.
What type of reaction is this?
a)
alpha
b)
beta
c)
gamma
d)
quiet
31.
Alpha particles have a _____ charge.
a)
+2
b)
0
c)
+1
d)
-1
32.

Complete the nuclear equation and determine the type of decay that is occurring in this reaction.

a)

alpha, 42He

b)

beta, 0-1e

c)

gamma

d)

none

33.

How many valence electrons does Lithium (Li) have?

a)

8

b)

1

c)

5

d)

2

34.
How many p orbitals are there in a sublevel?
a)
2
b)
1
c)
4
d)
3
35.
What is this element?
1s22s22p63s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
36.
If an atom of nickel has a charge of +3, how many electrons does the atom have?
a)
28
b)
25
c)
26
d)
31
37.
In a correctly written symbol what would be located in the "A" position?
a)
number of neutrons
b)
atomic number
c)
number of electrons 
d)
mass number
38.
Isotopes are atoms of the same element that have the same number of __________ but different number of __________ . Therefore, isotopes of the same element have different masses. 
a)
protons, neutrons
b)
protons, electrons
c)
neutrons, protons
d)
electrons, protons
39.
An element with 4.35% have a mass of 49.9461 amu, 83.79% have amass of 51.9405 amu, 9.50% have a mass of 52.9407 amu, and 2.36% have a mass of 53.9389amu.
a)
51.99 amu
b)
52.19 amu
c)
53.45 amu
d)
17.33 amu
40.
In what form can an ionic compound conduct electricity?
a)
when dissolved in water
b)
as a solid
c)
as a crystal
d)
when warmed slightly
41.
According to the diagram below, how many bonds will this atom need to make to be stable?
a)
1
b)
2
c)
3
d)
4
42.

Bonds formed by sharing electrons between atoms are

a)

ionic

b)

metallic

c)

covalent

d)

dipole-dipole

43.

A compound that is a poor conductor and has low melting and boiling points is most likely

a)

ionic

b)

metallic

c)

covalent

44.
The chemical formula of sulfur hexabromide is
a)
SBr₆
b)
S₆Br
c)
S(VI)Br
d)
S6Br
45.
What is the VSEPR theory used to predict?
a)
Bond Strength
b)
Polarity
c)
Molecular Shape
d)
Electronegativity
46.
What molecular shape is the structure shown here? (H2O)
a)
tetrahedral
b)
trigonal planar
c)
bent
d)
trigonal pyramidal
47.
Determine the molecular shape of carbon tetrafluoride.
a)
linear
b)
trigonal planar
c)
bent
d)
tetrahedral
48.
A set of data are all close to each other, and they are close to the actual value.  This set of data can be described as...
a)
accurate
b)
precise
c)
both precise and accurate
49.
Always starts with a Hydrocarbon that reacts with oxygen and produces carbon dioxide and water. 
a)
Decomposition
b)
Synthesis
c)
Combustion
d)
Single Replacement
50.

Identify the type of reaction:

ZnCl2 + Mg --> Zn + MgCl2

a)

Precipitate

b)

Single Replacement

c)

Double Replacement

d)

Decomposition

51.
2Na +S → Na2S
a)
Double Replacement
b)
Decomposition
c)
Combustion
d)
Synthesis
52.

What is the molar mass of calcium chloride (CaCl₂)?

a)

40.08 g/mol

b)

75.53 g/mol

c)

110.98 g/mol

d)

111.00 g/mol

53.

What is the correct chemical formula for dinitrogen pentoxide?

a)

N₅O₂

b)

NO₂

c)

N₂O₃

d)

N₂O₅

54.
What is the first thing you must do to solve a stoichiometry problem?
a)
Write a Balanced Equation
b)
Panic
c)
Write an Unbalanced Equation
d)
Ask for help
55.
2 KClO3 → 2 KCl + 3 O2
How many moles of oxygen are produced when 6.7 moles of KClO3 decompose completely?
a)
6.7 mol
b)
1.0 mol
c)
10.1 mol
d)
4.5 mol
56.
In a lab, a scientist calculate he should produce 12.3 grams of product in his experiment. When he is finished collecting his product it weighs 10.1 grams. What is his percent yield?
a)
82%
b)
0.82%
c)
10.1 %
d)
100%
57.
How many molecules are in 2.5 mol of NaCl?
a)
1.51x1023
b)
146
c)
4.15
d)
1.51x1024
58.
What is the mass of 0.89 mol of CaCl2?
a)
111 grams
b)
0.008 grams
c)
98.9 grams
d)
none of the choices
59.
You have 3.5 L of H2 (g) at STP. How many moles of gas are there?
a)
22.4 mol
b)
22.4 L
c)
0.16 mol
d)
0.16 L
60.
The total number of sodium atoms in 46.0 grams is
a)
3.01 x 1023
b)
6.02 x 1023
c)

1.2 x 1024

d)
24 x 1023

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