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HS Chemistry Final Exam S2 Review LE2324

Total questions: 105

Worksheet time: 1hrs 5mins

Name
Class
Date
1.

An ionic bond is between

a)

metal and metal

b)

metal and nonmetal

c)

nonmetal and nonmetal

2.

A covalent bond is between

a)

metal and metal

b)

metal and nonmetal

c)

nonmetal and nonmetal

3.

A metallic bond is between

a)

metal and metal

b)

metal and nonmetal

c)

nonmetal and nonmetal

4.

The periodic table is organized by the

a)

atomic numbers

b)

alphabetical order

c)

densities

d)

melting points

5.

What is the oxidation number for Carbon?

a)

+4 and -4

b)

-3

c)

+1

6.

What is the oxidation number for Nitrogen?

a)

+4 and -4

b)

-3

c)

+1

7.

Is this the correct lewis dot for Chlorine?

a)

yes

b)

no

8.

Is this the correct lewis dot for Sodium?

a)

yes

b)

no

9.

Which one shows the items in the image from HIGH density to LOW density:

a)

honey, dish soap, water

b)

water, dish soap, honey

10.

Which item has the highest density #?

a)

honey

b)

dish soap

c)

water

d)

vegetable oil

11.

Which Lewis dot matched the configuration:

1s21s^2   2s22s^2   2p22p^2  

a)
b)
c)
12.

Which Lewis dot matched the configuration:

1s21s^2   2s22s^2   2p22p^2   2p62p^6   3s13s^1  

a)
b)
c)
13.

What is the correct Lewis Dot diagram for a molecule of Nitrogen trihydride (NH3)?

a)
b)
c)
14.

Which name represents the formula Fe2O3Fe_2O_3  ?

a)

Iron (III) oxide

b)

Iron (II) oxide

15.

Match the name and formula:

a)

iron (II) oxide, Fe2O3

b)

potassium chloride, K2Cl2

c)

carbon monoxide, CO2

16.

Which is the electron configuration of an atom of Period 2 element?

a)

1s22s1

b)

1s22s22p63s1

17.

Which is the electron configuration of an atom of Period 3 element?

a)

1s22s1

b)

1s22s22p63s1

18.

Alkali metals have...

a)

1 valence electron, +1 charge

b)

2 valence electrons, +2 charge

c)

1 valence electrons, -1 charge

19.

Decomposing of an apple is an example of...

a)

chemical change

b)

physical change

20.

Which one is the least reactive group?

a)

Alkali metal

b)

Alkali earth metal

c)

Halogens

d)

Noble Gases

21.

Which of the following is the Lewis dot diagram for Bromine:

a)
b)
c)
22.

Which answer is an example of a chemical change?

a)

Boiling water

b)

rusting iron

c)

dissolving powder

d)

freezing water

23.

Which answer is an example of a physical change?

a)

freezing water

b)

burning coal

c)

rusting iron

d)

baking a cake

24.

Which answer is an example of a physical change?

a)

baking a cake

b)

burning coal

c)

rusting iron

d)

dissolving powder

25.

Which answer is an example of a physical change?

a)

Burning coal

b)

shredding paper

c)

rusting iron

d)

baking a cake

26.

1s22s22p63s23p63d104s24p3

Which element does this configuration belong to?

a)

Arsenic

b)

Calcium

c)

Lithium

d)

Aluminum

27.

Which of the following substances are elements?

a)

water

b)

salt

c)

carbon dioxide

d)

hydrogen

28.

What is the correct Lewis Dot diagram for a molecule of Nitrogen trihydride (NH3)?

a)
b)
c)
29.

Which name represents the formula Fe2O3Fe_2O_3  ?

a)

Iron (III) oxide

b)

Iron (II) oxide

30.

Match the name and formula:

a)

iron (II) oxide, Fe2O3

b)

potassium chloride, K2Cl2

c)

carbon monoxide, CO2

31.

Which is the electron configuration of an atom of Period 2 element?

a)

1s22s1

b)

1s22s22p63s1

32.

Which is the electron configuration of an atom of Period 3 element?

a)

1s22s1

b)

1s22s22p63s1

33.

Alkali metals have...

a)

1 valence electron, +1 charge

b)

2 valence electrons, +2 charge

c)

1 valence electrons, -1 charge

34.

Decomposing of an apple is an example of...

a)

chemical change

b)

physical change

35.

Which one is the least reactive group?

a)

Alkali metal

b)

Alkali earth metal

c)

Halogens

d)

Noble Gases

36.

Which of the following is the Lewis dot diagram for Bromine:

a)
b)
c)
37.

Which answer is an example of a chemical change?

a)

Boiling water

b)

rusting iron

c)

dissolving powder

d)

freezing water

38.

Which answer is an example of a physical change?

a)

freezing water

b)

burning coal

c)

rusting iron

d)

baking a cake

39.

Which answer is an example of a physical change?

a)

baking a cake

b)

burning coal

c)

rusting iron

d)

dissolving powder

40.

Which answer is an example of a physical change?

a)

Burning coal

b)

shredding paper

c)

rusting iron

d)

baking a cake

41.

1s22s22p63s23p63d104s24p3

Which element does this configuration belong to?

a)

Arsenic

b)

Calcium

c)

Lithium

d)

Aluminum

42.

Which of the following substances are elements?

a)

water

b)

salt

c)

carbon dioxide

d)

hydrogen

43.

Substances that are the result of a chemical change is ................... .

a)

reactant

b)

reaction

c)

product

d)

H2O

44.

2 RbNO3 + BeF2 --> Be(NO3)2 + 2 RbF ?

a)

decomposition

b)

synthesis

c)

single displacement

d)

double displacement

45.

AX ⟹\Longrightarrow   A + X , is an example of ______ .

a)

Combustion reaction

b)

Decomposition reaction

c)

Synthesis reaction

d)

None of them

46.

The electrons in the outermost energy level are called

a)

valence

b)

ions

c)

covalent

d)

farthest out

47.

The basic unit of matter is the

a)

cell

b)

atom

c)

compound

d)

element

48.

Chemical reactions start with _____________ and end with _______________

a)

Reactants, Products

b)

Products, Reactants

c)

Substances, Chemicals

d)

Chemicals, Compounds

49.

A certain atom of oxygen contains 8 protons, 8 neutrons, & 8 electrons. Another atom of unknown identity contains 9 protons. Which of the following MUST be true about this unidentified atom?

a)

It has 9 neutrons in its nucleus.

b)

It is an isotope of oxygen.

c)

Its atomic mass is a decimal number.

d)

It cannot be an atom of oxygen.

50.
For the equation:
2H2 +  O2 --> 2H2O
How much H2O will be produced if we react 4g of H2 and 32g of O2?
a)
4g
b)
32g
c)
36g
d)
28g
51.
A chemical equation tells us 
a)
the reactants and the products.
b)
the elements that make up the reactants and the products.
c)
the number of atoms that make up the reactants and the products.
d)
All of the above.
52.
An atom becomes _________ when it gains electrons.
a)
Positive
b)
Negative
c)
Neutral
d)
Invinsible
53.

What is the name of group number 1?

a)

halogens

b)

noble gases

c)

alkali metals

d)

alkaline earth metals

54.

Periodic law states that the elements are arranged according to their atomic ________ so that elements with similar chemical properties are in the same ________ and properties repeat periodically.

a)

numbers, rows

b)

masses, rows

c)

masses, column

d)

numbers, column

55.
__________ would have some characteristics of metals and some characteristics of nonmetals.
a)
Gold
b)
Sodium
c)
Arsenic
d)
Bismuth
56.

Which halogen is found in period 4?

a)

Krypton (Kr)

b)

Xenon (Xe)

c)

Bromine (Br)

d)

Iodine (I)

57.

Is the following a pure substance or mixture? Baking Soda ( NaHCO3NaHCO_3 ) 

a)

pure substance

b)

mixture

58.

How would you classify this image?

a)

homogeneous mixture

b)

heterogeneous mixture

59.

Which separation technique is used to obtain salt from seawater?

a)

Simple distillation

b)

Filtration

c)

Chromatography

d)

Evaporation

60.

Write the formula for barium + nitrogen

a)

Ba2N3

b)

Ba3N2

c)

BaN

d)

BaN3

61.
What is the FORMULA for...
calcium arsenide
a)
Ca3As2
b)
CaAs2
c)
Ca3As
d)
Ca3Ar2
62.

When a metal loses electrons, it becomes this type of ion.

a)

anion

b)

cation

63.
 A lone pair is defined as
a)
A pair of bonding electrons
b)
One non-bonding electron
c)
A pair of non-bonding electrons
d)
A pair of electrons on the central atom
64.
Who could this molecule be?
a)
CH4
b)
CO2
c)
PCl5
d)
BF3
65.
According to VSEPR, molecules adjust their shapes to keep which of the following as far away as possible?
a)
Pairs of valence electrons
b)
Inner shell electrons
c)
Mobile Electrons
d)
Electrons closest to the nucleus
66.
Which of the following is an example of synthesis?
a)
Na + Br2 --> NaBr
b)
KClO3 --> KCl + O2
c)
HgO + Cl2-->HgCl + O2
d)
Cl2 + NaBr --> NaCl + Br2
67.

What reaction has the following general formula:

AB --> A + B

a)

Synthesis

b)

Decomposition

c)

Single Replacement

d)

Double Replacement

e)

Combustion

68.
In a chemical reaction, everything to the right of the arrow is called ______________.
a)
Products
b)
Yields
c)
Molecules
d)
Reactants
69.
What two types of atoms make a covalent bond?
a)
2 Nonmetals
b)
1 Nonmetal and 1 Metal
c)
2 Metals
d)
2 Noble Gases
70.
According to the octet rule most elements need _______ valence electrons.
a)
2
b)
8
c)
6
d)
18
71.
Hydrogen needs _____ electrons in its valence shell to be stable.
a)
4
b)
6
c)
8
d)
2
72.
Is Hydrogen considered a metal or a non-metal?
a)
Metal
b)
Non-metal
73.

A __________ is a subatomic particle with a positive charge.

a)

proton

b)

neutron

c)

electron

d)

nucleus

74.

How many electrons can fit on the 1st energy level (orbital) for any Bohr Model?

a)

2

b)

6

c)

8

d)

10

75.

What is a valence electron?

a)

Electrons in the first energy shell

b)

Electrons in the second energy shell

c)

Electrons in the outer shell

d)

Total number of electrons

76.

What is the mass number of this atom?

a)

1

b)

3

c)

4

d)

7

77.
What two types of measurements make up DENSITY? 
a)
Mass and Volume
b)
Temperature and Mass
c)
Grams and Centimeters
d)
Volume and Weight
78.
What units are used to measure mass?
a)
g
b)
cm3
c)
g/cm3
d)
cm3/g
79.

What is matter?

a)

anything that has mass and takes up space

b)

anything that can be felt

c)

anything that can behave in many different ways

d)

anything that exist on Earth

80.
Which part of the atom is green?
a)
neutrons
b)
protons
c)
nucleus
d)
electrons
81.
Where are metals located on the periodic table?
a)
Blue
b)
Green
c)
Red
82.
Look at this image.  Which object has the LOWEST density in water? How? 
a)
The Ping Pong Ball because it floats to the top 
b)
The bolt because it has sunk to the bottom
c)
The soda cap because it is not just full of air like the Ping Pong ball
83.
What part of an atom is involved in chemical bonding?
a)
protons
b)
neutrons
c)
electrons
d)
nucleus
84.

In a double replacement, ____________________

a)

The reactants are usually a metal and a nonmetal

b)

One of the reactants is often water

c)

The reactants are generally 2 ionic compounds in aqueous solutions

d)

Energy in the form of light or heat is often produced

85.

If 2.00 L of a gas in a container at room temperature exerts a pressure of 4.00 atm. If the pressure doubles and the temperature remains the same, the volume would become ________.

a)

16.0 L

b)

2.00 L

c)

4.00 L

d)

1.00 L

86.

What are the coefficients that will balance the skeleton equation below?

AlCl3 + NaOH → Al(OH)3 + NaCl

a)

1,3,1,3

b)

3,1,3,1

c)

1,1,1,3

d)

1,3,3,1

87.

The equation 2C3H7OH + 9O2 → 6CO2 + 8H2O is an example of which type of reaction?

a)

Combustion reaction

b)

Single replacement reaction

c)

Double replacement reaction

d)

Decomposition reaction

88.

An ionic bond is between

a)

metal and metal

b)

metal and nonmetal

c)

nonmetal and nonmetal

89.

Is this the correct lewis dot for Chlorine?

a)

yes

b)

no

90.

Decomposing of an apple is an example of...

a)

chemical change

b)

physical change

91.

Which one is the least reactive group?

a)

Alkali metal

b)

Alkali earth metal

c)

Halogens

d)

Noble Gases

92.

Which answer is an example of a chemical change?

a)

Boiling water

b)

rusting iron

c)

dissolving powder

d)

freezing water

93.

Which answer is an example of a physical change?

a)

freezing water

b)

burning coal

c)

rusting iron

d)

baking a cake

94.

1s22s22p63s23p63d104s24p3

Which element does this configuration belong to?

a)

Arsenic

b)

Calcium

c)

Lithium

d)

Aluminum

95.

Which of the following substances are elements?

a)

water

b)

salt

c)

carbon dioxide

d)

hydrogen

96.

Which describes a liquid?

a)

It keeps its shape, and has weight.

b)

It takes the shape of its container and has weight.

c)

It has NO weight or shape.

97.
The right of the arrow is called?
a)
Reactant 
b)
Product
c)
Yields
98.
List the coeffecieints in order.
a)
4,3,2
b)
2,2,3
c)
4,2,3
d)
1,2,3
99.
List the subscripts in the product only.
a)
2
b)
2,2,3
c)
2,3
d)
4,3,2,
100.

If an element has 11 protons and 12 Neutrons, what is it's atomic mass?

a)

12

b)

11

c)

23

d)

1

101.

Based on the Bohr model, how many valence electrons does this atom have?

a)

7

b)

1

c)

5

d)

4

102.

Four substances were tested for pH, lemon juice (pH 2), baking soda (pH 9), bleach (pH 12), and milk (pH 6). Which of the following correctly lists the substances from most basic to acidic?

a)

lemon juice, milk, baking soda, bleach

b)

bleach, baking soda, milk, lemon juice

c)

milk, lemon juice, baking soda, bleach

d)

baking soda, bleach, lemon juice, milk

103.

What type of reaction occurs between an acid and a base?

a)

Combustion

b)

Synthesis

c)

Neutralization

d)

Double Replacement

104.

What is the molarity of 9 moles of hydrochloric acid in 3 L of water. 

a)

3

b)

1

c)

6

d)

9

105.

Bases have a pH of

a)

7

b)

Less than 7

c)

More than 7

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