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Chemistry - Fall Semester Review 2020

Total questions: 60

Worksheet time: 2hrs 0mins

Name
Class
Date
1.

What is the correct Lewis Dot Structure for ammonia NH3

a)
b)
c)
d)
2.

Which is the correct molecular structure for carbon dioxide?

a)
b)
c)
d)
3.

Which of the following elements are an exception to the octet rule and require less than 8 valence electrons?

a)

H

b)

Li

c)

C

4.

Compounds composed of a ______________ and _____________ like the compound CaCl2 , are ionic compounds.

a)

metal ... metal

b)

nonmetal ... nonmetal

c)

metal ... nonmetal

5.

Which of the following describes covalent bonds?

a)

Bonds form because of opposite charges

b)

electrons are shared to fill outer electron shells

c)

Electrons are transferred between atoms

d)

Covalent bonds are magical

6.
Ionic Bonding involves...
a)
The transfer of protons
b)
The transfer of nuetrons 
c)
The transfer of electrons
d)
None Of the above
7.

Why do atoms form bonds?

a)

to attain a noble gas configuration - STABILITY!

b)

to increase their mass

c)

to increase their atomic number

d)

to attain an alkali metal configuration

8.

What property is describing an ionic compound?

a)

shares electrons

b)

high melting point

c)

weak bonds

d)

made up of nonmetals.

9.
Which of the following gives the correct chemical formula for the compound Magnesium Phosphide?
a)
Mg2P3
b)
MgP
c)
Mg3P2
d)
MgP2
10.
Which of the following gives the correct chemical formula for the compound Dinitrogen Monoxide?
a)
NO
b)
N2O
c)
N2O2
d)
O2N2
11.

What is the correct chemical name for the ionic compound: Fe3N2

a)

iron nitride

b)

iron (III) nitride

c)

iron (II) nitride

d)

triiron dinitride

12.
Which observation is quantitative?
a)
It is 5 cm long
b)
It is smooth
c)
It looks red
d)
It is dry
13.
What is an observation?
a)
an opinion
b)
a fact
c)
what you decide
d)
a conclusion
14.

Dolphin colors range from gray to white.

a)

quantitative observation

b)

qualitative observation

15.
The penguin got pushed in.
a)
Observation
b)
Inference
16.
There are fourteen penguins.
a)
Observation
b)
Inference
17.
Salt dissolves in water
a)
physical Change
b)
chemical change
18.
hydrochloric acid reacts with magnesium to produce hydrogen gass
a)
physical change
b)
chemical change
19.

Is this a chemical or physical change and what evidence best supports your claim?

a)

physical change / energy release

b)

physical change / precipitate

c)

chemical change / precipitate

d)

chemical change / color change

20.

Convert 40.0 ounces to pounds. (16oz = 1lb)

a)

2.5 pounds

b)

.4 pounds

c)

2.50 pounds

d)

5 pounds

21.

How many mL are there in a L?

a)

1 mL

b)

10 mL

c)

100 mL

d)

1000 mL

22.
Which is the electron configuration for an oxygen atom?
a)
1s22s22p63s23p64s2
b)
1s22s22p4
c)
1s22s22p6
d)
1s22s22p63s23p6
23.
How many valence electrons does Chlorine have?
a)
5
b)
2
c)
7
d)
5
24.
Which elements have the most similar chemical properties?
a)
K and Na
b)
K and Ca
c)
K and Cl
d)
K and S
25.
Which group has the most reactive nonmetals?
a)
alkali metals
b)
noble gases
c)
metalloids
d)
halogens
26.
Name the group that contains inert (nonreactive) elements.
a)
noble gases
b)
halogens
c)
alkali metals
d)
alkaline earth metals
27.

Which has the greater atomic radius of C, N or O?

a)

Carbon

b)

Nitrogen

c)

Oxygen

d)

What was the question again?

28.
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
29.
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.
30.
The element with the largest electronegativity in the halogens is - 
a)
At
b)
F
c)
Cl
d)
Br
31.
The element with the lowest electronegativity in Period 3 is - 
a)
Na
b)
Cl
c)
Ar
d)
Mg
32.
Chlorine and Fluorine are both very electronegative, as they are both missing a single electron from their valence energy level.  Why is Fluorine more electronegative than Chlorine? 
a)
Fluorine has less energy levels.
b)
Chlorine has more electrons in its outer shell
c)
Fluorine has more protons.
d)
None of these
33.
What is a reactant?
a)
a volatile chemical
b)
a dangerous substance
c)
the substances you start with in a chemical reaction
d)
the substances that are formed by a chemical reaction 
34.
What is a product?
a)
a fancy word for make-up
b)
a volatile chemical
c)
the substances you start with in a chemical reaction
d)
the substances that are formed by a chemical reaction
35.
The number of atoms you begin with in a chemical reaction ...
a)
must be the same as the number of  atoms you end with
b)
must be an even number
c)
can be different to the number you finish with
d)
changes depending on how much energy is formed
36.

Balance the following:

____ Fe + ____ Cl2 → ____ FeCl3

a)
1,1,2
b)
1,3,1
c)
2,2,3
d)
2,3,2
37.

Balance the following:

____ Al + ____ O2 → ____ Al2O3

a)
2,3,4
b)
4,3,2
c)
1,1,2
d)
2,1,1
38.

Which type of reaction is:

2 H3AsO4 → As2O5 + 3 H2O

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Combustion
39.

Which type of reaction is:

2 NH3 + H2SO4 → (NH4)2SO4

a)
Synthesis
b)
Decomposition
c)
Single Displacement
d)
Double Displacement
40.
3Ca + 2AlCl3 --> 3CaCl2 + 2Al
a)
Synthesis
b)
Decomposition
c)
Single diplacement
d)
Double displacement
41.
3KOH + H3PO4 --> K3PO4 + 3H2O
a)
Synthesis 
b)
Decomposition
c)
Single displacement
d)
Double displacement
42.
Which reaction type is the following: C5H10O4 + O2 --> CO2 + H2O
a)
Decomposition
b)
Single Replacement
c)
Combustion
d)
Double Replacement
43.
What is the molar mass NaCl?
a)
58 grams
b)
22.95 grams
c)
162 grams
d)
6.02 x 1023
44.
What is Avogadro's Number? 
a)
6.02 x 1023
b)
- 6.02 1023
c)
6.02 x 1022
d)
6,020,000,000,000
45.
How many atoms are in 1 mole of NaCl? 
a)
6.02 x 1023
b)
58 
c)
11
d)
17
46.
How many moles are in 32 grams of Oxygen (O)? 
a)
3
b)
2
c)
1
d)
4
47.
What is an isotope? 
a)
A charged atom
b)
An atom with different amounts of neutrons
c)
An atom with different amounts of protons
d)
A neutral atom
48.
What is an ion?
a)
A Charged Atom
b)
A Large Atom
c)
A Small Atom
d)
A Cute Atom
49.
The unit "gram" measures what?
a)
volume
b)
mass
c)
length
d)
speed
50.

Convert 2.5 grams into milligrams.

a)

25 mg

b)

25,000 mg

c)

250 mg

d)

2500 mg

51.

How many cm are there in a m?

a)

1 cm

b)

10 cm

c)

100 cm

d)

1000 cm

52.
What atom matches this electron configuration?
1s2 2s2 2p6 3s2
a)
Neon
b)
Magnesium
c)
Aluminum
d)
Potassium
53.

What is this element?

1s22s22p63s23p64s23d104p6

a)

Argon

b)

Krypton

c)

Selenium

d)

Bromide

54.
How many valence electrons does phosphorus have?
a)
5
b)
2
c)
8
d)
15
55.

What element in Period 4 (row) has 5 valence electrons?

a)

Zr

b)

As

c)

V

d)

Sb

56.

Name the following ionic compound: LiNO3

a)

lithium nitrate

b)

lithium (III) nitrate

c)

lithium nitride

d)

lithium oxide

57.
copper(II) chloride
a)
CuCl2
b)
CuCl
c)
Cu2Cl
d)
Cu2Cl2
58.

Based on the activity series, what are the predicted products of this reaction?

Br2 (l) + KI (aq) →

a)

KBr + I2

b)

KBr + I

c)

KBr2 + I

d)

No Reaction

59.

Based on the activity series, will this reaction occur?

Au (s) + HCl (l) →

a)

AuCl + H

b)

No Reaction

c)

AuCl + H2

d)

Au2Cl + H2

60.

A combustion reaction occurred in which the products created are CO2 and H2O. What were the reactants of this reaction? Select all that apply.

a)

Nitrogen

b)

Carbon

c)

Oxygen

d)

Hydrogen

e)

Sulfur

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