Free Printable 2022 chemistry final

1.

The symbol (g) found beside a chemical formula indicates that the chemical is ___________________.

Correct!

a)

x

b)

in the gaseous state

c)

x

d)

x

2.

Calculate the following, and express the answer in scientific notation with the correct number of significant figures:

10.5 x 8.8 x 3.14

a)

2.9 x 10²

b)

xx

c)

xx

d)

xx

3.

a mixture of propane and oxygen react to form carbon dioxide and water. what type of chemical reaction is this?

Correct!

a)

x

b)

z

c)

combustion

d)

c

4.

Which of the following shows the correct way to balance the chemical equation?

Fe + O2 -> Fe2O3

a)

4Fe + 3O2 -> 2Fe2O3

b)

s

c)

d

d)

f

5.

Formula of Zinc Fluoride

a)

ZnF2

b)

z

c)

z

d)

x

6.

CHARLES law shows that the temperature and volume of a gas are always........

a)

x

b)

z

c)

directly proportional

d)

c

7.

What is the pressure of a car tire that had an initial pressure of 1.8 atm but was heated from 38 oC to 123 oC?

a)

2.3 atm

b)

0.0

c)

3.4

d)

z

8.

What does this solubility curve show?

a)

d

b)

s

c)

z

d)

Solubility decreases as temperature decreases

9.

A Bronsted Lowry base:

a)

a

b)

s

c)

accepts H+ from another substance

d)

s

10.

Find the percent composition of Cu2S?

a)

%Cu= 79.854 %S= 20.145

b)

s

c)

a

d)

a

11.

Which formula would you use to solve the following questions?

A gas that has a pressure of 2 atm and a volume of 10 L. What would be the new volume if the pressure was changed to 1 atm?

a)

f

b)

e

c)

w

d)

P1V1 = P2V2

12.

________________ are located on the right side of the zig-zag staircase on there periodic table (except Hydrogen) blue staircase)

a)

e

b)

e

c)

s

d)

Non- Metals

13.

What is the percent composition by mass of sulfur (S) in the compound MgSO4?

a)

g

b)

f

c)

26.64%

d)

e

14.

What is the difference between a formula unit and a molecule?

a)

s

b)

formula unit - ionic bond

molecule - covalent bond

c)

es

d)

s

15.

A ____________ is another name for a homogeneous mixture.

a)

solution

b)

1

c)

2

d)

2

16.

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)

e

b)

e

c)

82%

d)

e

17.

How many significant figures does 40.60 have?

a)

z

b)

4

c)

zz

d)

z

18.

What is the left part of a chemical equation called?

2H2 + O2 --> 2H2O

a)

z

b)

z

c)

z

d)

reactants

19.

What percent of Zn3(PO4)2 is zinc?

a)

z

b)

50.80%

c)

z

d)

z

20.

What is the pH of household ammonia in which the [H+] is 1 x 10 -12 M?

a)

s

b)

s

c)

12

d)

s

21.

To conduct electricity, a solution must contain

a)

z

b)

x

c)

x

d)

ions

22.

4.0 L of a gas is contained at 300. kPa and 200 K. What will its volume be in L at 140 kPa and 100 K?

a)

c

b)

4.3L

c)

x

d)

z

23.

The actual yield of a product

a)

s

b)

s

c)

measured experimentally

d)

s

24.

charles law states

a)

As Volume goes up temperature goes up

b)

s

c)

s

d)

s

25.

Determine the molar mass for carbon tetrachloride (CCl4).

a)

s

b)

s

c)

153.81 g/mol

d)

s

26.

B2H6 + 3O2 -->2 HBO2 + 2 H2O

What mass of O2 will be needed to burn 36.1 g of B2H6?

a)

x

b)

3.9

c)

x

d)

x

27.

What do all bonds form?

a)

b

b)

v

c)

b

d)

to fill the outermost energy lvl

28.

Gas Laws involve what three terms?

a)

x

b)

x

c)

x

d)

pressure, temperature, volume

29.

Determine the initial temperature of a random gas when the initial volume is 2.2 L and it is cooled to 88K with a volume of 0.85 L.

a)

230K

b)

s

c)

s

d)

s

30.

Homogeneous mixture are also called

a)

x

b)

solutions

c)

x

d)

x

31.

All of the KBr that will dissolve in a solution has dissolved, and several undissolved crystals remain on the bottom of the beaker. The solution is ...

a)

z

b)

z

c)

saturated

d)

z

32.

strong bases are

a)

z

b)

z

c)

z

d)

strong electrolytes

33.

A student measures the pressure and volume of an empty water bottle to be 1.5 atm and 2.5 L. She then decreases the pressure to 0.75 atm. What is the new volume?

a)

S

b)

Z

c)

S

d)

5.0L

34.

Standard temperature and pressure (STP) are

a)

x

b)

x

c)

x

d)

0o C and 1 atm

35.

In the following reactions, which substance acts as a Bronsted-Lowery base?

HCl + NH3 --> NH4 + + Cl-

a)

NH3

b)

a

c)

s

d)

s

36.

An Arrhenius base:

a)

c

b)

produces OH-

c)

aa

d)

s

37.

The SI unit of molar mass is the

a)

x

b)

x

c)

x

d)

gram/mole

38.

How many grams is 1.2 moles of Neon?

a)

s

b)

f

c)

24 grams

d)

b

39.

How many significant figures does 0.050200 have?

a)

s

b)

s

c)

5

d)

d

40.

the number of significant figures in the measurement 0.000305 kg is

a)

w

b)

w

c)

three

d)

w

41.

What is the correct acid name for the aqueous solution of HClO4?

a)

d

b)

d

c)

d

d)

perchloric acid

42.

how is moles abbrivated

a)

mol

b)

s

c)

a

d)

d

43.

The neutralization of any strong acid and strong base produces mostly

a)

h

b)

H2O molecules

c)

h

d)

h

44.

The electron configuration of an atom is 1s22s22p6. The number of electrons in the atom is

a)

s

b)

h

c)

h

d)

10

45.

What is the little number after an element in a chemical equation called.

Example: H2 (small 2)

a)

z

b)

j

c)

subscript

d)

j

46.

Calculate the volume that a 0.323 mol sample of a gas will occupy at 265 K and a pressure of 0.900 atm. (R = 0.0821)

a)

7.81L

b)

j

c)

j

d)

j

47.

What is the measured amount of a product obtained from a chemical reaction?

a)

h

b)

actual yield

c)

h

d)

h

48.

How many moles are in 19.82 g Mg?

a)

h

b)

h

c)

0.815 mol Mg

d)

h

49.

When Sally tested an unknown substance, her red litmus paper turned blue but her blue litmus paper did not change color. What is the solution?

a)

h

b)

h

c)

h

d)

base

50.

Three values were obtained for the mass of a metal bar: 8.83 g, 8.84g, 8.82 g. The known mass is 10.68 g. The values are

a)

presice

b)

h

c)

b

d)

b

51.

What is the mass of one mole of aluminum chloride (remember to determine the correct formula first)?

a)

h

b)

h

c)

133.341g

d)

h

52.

A weak acid would have a pH of...

a)

j

b)

j

c)

j

d)

6

53.

What is Avogadro's number?

a)

6.022 x 1023

b)

h

c)

h

d)

h

54.

Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)

How many moles of iron can be made from 6 moles H2?

a)

s

b)

j

c)

4 moles of Fe

d)

j

55.

Which coefficients correctly balance the formula equation below?

KClO3(s) --> KCl(s) + O2(g)

a)

2,2,3

b)

s

c)

j

d)

j

56.

What is the mass of AuCl3?

a)

h

b)

j

c)

303.326 g

d)

j

57.

What is the molarity of 4 g of NaCl (MM=58.45) in 3,800 mL of solution?

a)

s

b)

s

c)

s

d)

0.018 M

58.

A _______________ mixture is a mixture in which substances are not evenly mixed.

a)

heterogeneous

b)

u

c)

u

d)

u

59.

A student inflates a balloon with helium then places it in the freezer. The student should expect

a)

the balloon's volume to decrease

b)

h

c)

h

d)

h

60.

Directly proportional means that as one value increases ....................

a)

j

b)

j

c)

the other increases as well

d)

j

61.

A pH meter measures the

a)

s

b)

h

c)

voltage difference between two electrode in solution

d)

h

62.

Weak tea is an example of a

a)

s

b)

ss

c)

dilute solution

d)

s

63.

Th volume of 1 mol of any gas at STP

a)

WW

b)

W

c)

W

d)

22.41 LLLLL

64.

A _______________ is two or more substances that are physically blended but are not chemically bonded together.

a)

w

b)

mixture

c)

ww

d)

ww

65.

The SI unit for pressure is

a)

n

b)

pascal

c)

n

d)

n

66.

Which of the following is an intensive property of matter?

a)

b

b)

bb

c)

bb

d)

density

67.

What is the molecular formula if the empirical formula is C2H5 and the molecular molar mass is 58.14 g/mol?

a)

d

b)

C4H10

c)

d

d)

d

68.

In the ideal gas law, which variable represents the gas constant?

a)

.

b)

R

c)

.

d)

.

69.

What is the empirical formula for the following molecular formula: C6H14

a)

b

b)

d

c)

d

d)

C3H7

70.

How many liters would you need to make a 1 M solution if you have 5 mol of Sodium Hydroxide?

a)

d

b)

dd

c)

d

d)

5

71.

Electrons can be found

a)

z

b)

z

c)

moving rapidly outside the nucleus

d)

z

72.

a compound is

a)

s

b)

ss

c)

s

d)

a substance tat is composed of two or more elements that are chemically bonded

73.

An extremely strong BASE would have a pH of...

a)

14

b)

d

c)

d

d)

d

74.

what type of reaction does the following chemical equation represent?

2HCl (aq) + Cr (s) --> H2(g)+ CrCl2 (aq)

a)

single replacement

b)

eh

c)

j

d)

j

75.

In which type of reaction do two or more compounds react to form one product?

a)

e

b)

e

c)

synthesis

d)

e

76.

How many O's are in Al₂(SO₄)₃

a)

s

b)

s

c)

12

d)

s

77.

Whose law states that as pressure goes up, volume goes down?

a)

Boyle

b)

w

c)

w

d)

w

78.

What do acids and bases have in common?

a)

e

b)

e

c)

they can both conduct electricty

d)

e

79.

For the reaction represented by the equation Cl2 + 2KBr → Br2 + 2KCl, how many grams of potassium chloride can be produced from 356 grams potassium bromide?

a)

w

b)

222

c)

w

d)

w

80.

What is the first thing you must do to solve a stoichiometry problem?

a)

d

b)

d

c)

d

d)

make sure the chemical reaction is balanced

81.

A form of matter with constant volume that takes the shape of its container

a)

d

b)

d

c)

d

d)

liquid

82.

What is 78.5 rounded to one significant figure?

a)

80

b)

h

c)

h

d)

h

83.

How many grams of CaCl2 (molar mass = 110.98 g/mol) are needed to prepare 1.00 L of a 1.00 M solution?

a)

s

b)

110.98 g

c)

s

d)

s

84.

What is the formula of calcium phosphate?

a)

s

b)

s

c)

Ca3(PO4)2

d)

s

85.

Calcium carbonate, CaCO3 reacts to form calcium oxide, CaO, and carbon dioxide, CO2 , what type of reaction is this?

a)

x

b)

xx

c)

decomposition

d)

x

86.

What is an Excess Reactant?

a)

the unreacted chemical you have left over

b)

s

c)

s

d)

a

87.

What is the range of pH values in a basic solution?

a)

d

b)

d

c)

8-14

d)

d

88.

pH stands for:

a)

e

b)

Potential of hydrogen

c)

e

d)

e

89.

A form of matter with definite shape and volume

a)

solid

b)

p

c)

hu

d)

n

90.

Which of the following would have a greater mass?

a)

d

b)

1 mole of Au

c)

d

d)

d

91.

A neutral substance would have pH of...

a)

2

b)

2

c)

7

d)

1

92.

What is the calculated/predicted amount of product that could be obtained in a chemical reaction?

a)

d

b)

d

c)

d

d)

theorical yield

93.

All Bronsted-Lowery acids

a)

e

b)

donates protons

c)

e

d)

e

94.

_______________ are located on the left side of the zig-zag staircase on there periodic table (except Hydrogen)

a)

x

b)

x

c)

x

d)

metals

95.

What is the [OH-] in a sample of lime juice with a pH of 2.0?

a)

a

b)

a

c)

1.0 x 10-12 M

d)

a

96.

When the temperature of matter increases the particles...

a)

d

b)

e

c)

x

d)

speed up and move farther apart

97.

What is the empirical formula if you have 88.80% copper and 11.20% oxygen?

a)

Cu2O

b)

e

c)

e

d)

x

98.

How many representative particles are found in 1.23 mol of Polonium.

a)

v

b)

7.53x1023

c)

w

d)

w

99.

When does a chemical reaction stop?

a)

h

b)

n

c)

when the limiting reaction is used up

d)

n

100.

What is the empirical formula if you have 36.84% nitrogen and 63.16% oxygen?

a)

s

b)

N2O3

c)

s

d)

s

101.

Which law implies that the volume of a gas is directly proportional to the number of moles of the gas?

a)

w

b)

w

c)

Avogadro's

d)

w

102.

Temperature describes the ______________ of particles.

a)

s

b)

motion

c)

s

d)

s

103.

How many moles are in 6.022 x 1023 molecules of H2O?

a)

x

b)

s

c)

x

d)

1

104.

What is the correct formula for hydrosulfuric acid?

a)

s

b)

s

c)

w

d)

H2S

105.

Which of the following is true regarding single displacement reactions?

a)

d

b)

one element replaces another in a compound

c)

d

d)

d

106.

A solution that has a pH of 13 is

a)

strong base

b)

f

c)

w

d)

s

107.

When you add so much solute that no more dissolves, you have a(n)

a)

e

b)

saturated solution

c)

d

d)

d

108.

What is the charge of a neutron?

a)

dd

b)

neutral

c)

s

d)

s

109.

How are elements on the periodic table arranged by?

a)

w

b)

similar, physical, and chemical properties

c)

r

d)

d

110.

Which of the following actions does not, in general increase the solubility of a solid in a liquid?

a)

j

b)

increasing the pressure of the solution

c)

w

d)

d

111.

What type of chemical reaction is this one?

Al(OH)3 --> Al2O3 + H2O

a)

d

b)

d

c)

decomposition

d)

s

112.

In the ideal gas law, what does the variable n represent?

a)

s

b)

moles

c)

d

d)

s

113.

What is 0 Kelvin known as

a)

absolute zero

b)

e

c)

d

d)

q

114.

An acid- base indicator

a)

d

b)

f

c)

s

d)

all of the choices

115.

A substance that is not soluble in a polar solvent is most likely

a)

3

b)

s

c)

nonpolar

d)

d

116.

Which of the following substances can act as an Arrhenius base, Bronsted-Lowery base and a Lewis base?

a)

e

b)

d

c)

NH3

d)

a

117.

In order to convert to Kelvin, you add ______ to the Celsius measurement.

a)

273

b)

e

c)

d

d)

s

118.

An Arrhenius acid:

a)

d

b)

s

c)

a

d)

produces H+

119.

What do the prefixes in front of an element name tell us about the compound?

a)

d

b)

s

c)

x

d)

the number of that element

120.

What type of chemical reaction is this one?

CuO + CO2 --> CuCO3

a)

e

b)

a

c)

synthesis

d)

d

121.

If a hairspray can is heated, what can be expected of the pressure of the gas inside the can?

a)

r

b)

the pressure will increase

c)

d

d)

s

122.

The Acid-Base classification system that defined any chemical species that accepts a pair of electrons as a _______, and a _________ is a chemical species that donates a pair of electrons.

a)

e

b)

lewis acid-base

c)

d

d)

s

123.

Mole ratios are obtained from the

a)

e

b)

a

c)

balanced chemical equations

d)

x

124.

Is HNO3 an acid or base?

a)

e

b)

acid

c)

s

d)

v

125.

The anion that has the formula ClO- is called the

a)

e

b)

s

c)

hypochlorite ion

d)

c

126.

Acids have a ______ pH and a _________ pOH

a)

ec

b)

c

c)

f

d)

low, high

127.

The maximum amount of solute that can dissolve in a given amount of solvent at a given temperature and pressure is called the __________________.

a)

solubility

b)

s

c)

d

d)

c

128.

Which formula would you use to solve the following problem?

A sample of a gas has a volume of 852 mL at 298 K. What temperature is necessary for the gas to have a volume of 945 mL?

a)

s

b)

V1/T1 = V2/T2

c)

a

d)

d

129.

Which conversion factor would you use to calculate correctly the mass of 2 moles of the element titanium?

a)

e

b)

d

c)

47.87 g Ti / 1 mole Ti

d)

s

130.

Look at the solubility curve - as a GENERAL rule (that means there are exceptions, as always, in science) what trend can be states about how temperature affects the solubility of the compounds shown.

a)

d

b)

f

c)

s

d)

The relationship is directly proportional - as temperature increases, the solubility increases.

131.

How many moles of oxygen do 1.5 moles of CO2 contain?

a)

f

b)

g

c)

3.0 moles

d)

c

132.

If you have an oxyacid and it contains an -ate polyatomic ion, then acid's ending will change to _____.

a)

d

b)

s

c)

-ic

d)

a

133.

Balance this equation-

__P4 + __O2 --> __P2O3

a)

d

b)

1,3,2

c)

c

d)

v

134.

Atoms with the same number of protons but different number of neutrons

a)

r

b)

e

c)

w

d)

isotopes

135.

_________________ are touching or bordering the zig-zag staircase on the periodic table

a)

g

b)

f

c)

metalloids (staircase)

d)

d

136.

What is the mole ratio of H2O to H3PO4 in the following chemical equation?

P4O10 + 6 H2O --> 4 H3PO4

a)

f

b)

d

c)

s

d)

6:4

137.

Theoretical yield = 73g

Actual yield = 62g

Calculate the percent yield.

a)

c

b)

85%

c)

d

d)

c

138.

An extremely strong acid would have a pH of...

a)

1

b)

h

c)

g

d)

g

139.

What is the molar mass of NaOH?

a)

r

b)

e

c)

f

d)

40.00g/mol

140.

You need 2 pieces of bread, 1 tablespoon of peanut butter and 2 tablespoons of jelly to make a sandwich. If you have 10 pieces of bread, 4 tablespoons of peanut butter and 20 tablespoons of jelly, what is the limiting reactant?

a)

c

b)

x

c)

peanut butter

d)

z

141.

When a nonmetal gains an electron it becomes a ...

a)

d

b)

s

c)

negative ion

d)

d

142.

What is the molar mass of C6H12O6?

a)

s

b)

d

c)

180

d)

c

143.

Which formula would you use to solve the following problem?

A gas fills a balloon at a temperature of 27 oC and 1 atm of pressure. What will the pressure of the balloon be if the gas is heated to 127 oC?

a)

d

b)

a

c)

P1/T1 = P2/T2

d)

f

144.

Which formula would you use to solve the following problem?

A 220.0 mL sample of helium gas is in a cylinder at 105 kPa and 275 K. The piston is pushed in until the sample has a new temperature of 310 K and new pressure of 150 kPa. What is the new volume of the gas?

a)

j

b)

b

c)

P1V1/T1 = P2V2/T2

d)

n

145.

Which formula would you use to solve the following problem?

If a nitrogen gas occupies a volume of 500 ml at a pressure of 0.971atm. What volume will the gas occupy at a pressure of 1.50 atm?

a)

s

b)

ea

c)

d

d)

P1V1 = P2V2

146.

Which formula would you use to solve the following problem?

Determine the number of moles in a container of gas at STP with a volume of 99.2 L.

a)

PV = nRT

b)

j

c)

h

d)

c

147.

How many electrons can the first energy level hold?

a)

x

b)

2

c)

s

d)

a

148.

a weak base would have a Ph of

a)

R

b)

E

c)

8

d)

W

149.

What is 55 oC in Kelvin?

a)

j

b)

328

c)

j

d)

h

150.

A container is filled with H2, and H2O. Calculate the partial pressure of H2 when the pressure of water is 17 torr. The total pressure of the gases is 750 torr.

a)

s

b)

733 torr

c)

a

d)

a

151.

The periodic table is arranged by increasing _________ _________ which is equal to the number of protons

a)

atomic number

b)

s

c)

d

d)

a

152.

A mole of carbon atoms will have a total mass of ___ .

a)

d

b)

12 g

c)

sf

d)

f

153.

Zinc is used as a coating on iron and steel to prevent corrosion. What is the mass, in grams, of 0.0650 mol Zn?

a)

d

b)

4.25

c)

s

d)

a

154.

Which of the following characteristics describes a base?

a)

s

b)

forms akaline solutions with pH above 7

c)

d

d)

a

155.

Balance this equation

_Zn+_HCl-->_ZnCl2 +_H2

a)

d

b)

1,2,1,1

c)

a

d)

d

156.

Stoichiometry is based on the law of conservation of

a)

x

b)

mass

c)

f

d)

h

157.

Inversely proportional means as one value increases the other.............

a)

decreases

b)

x

c)

s

d)

c

158.

What type of chemical reaction is this one?

Al(OH)3 --> Al2O3 + H2O

a)

d

b)

c

c)

decomposition

d)

s

159.

a basic solution

a)

s

b)

a

c)

has a lower concentration of H+ the OH-

d)

x

160.

When we start with moles, we _____________ by the molar mass to find grams.

a)

f

b)

vx

c)

x

d)

multiply

161.

Which of the following elements normally exists in the form of diatomic molecules?

a)

nitrogen

b)

d

c)

f

d)

s

162.

A ________________ mixture is a mixture in which two or more substances are evenly mixed on the atomic level but not bonded together.

a)

d

b)

homogeneous

c)

e

d)

a

163.

Accepts a pair of electrons

a)

lewis ACID

b)

e

c)

f

d)

cv

164.

Vertical columns of elements that DO share chemical properties because they have the same number of VALENCE electrons in their outer shells

a)

x

b)

groups

c)

z

d)

c

165.

The measurement 0.0235 g, rounded off to two significant figures. (hint: five rule)

a)

f

b)

s

c)

0.024 g

d)

a

166.

Why is the zero significant in the digit 706?

a)

d

b)

f

c)

v

d)

it is betweeen 2 significant figures

167.

When I want to balance a chemical equation, this is the only number that I can change.

a)

coefficiant

b)

f

c)

d

d)

g

168.

Horizontal rows of elements that share the same number of ENERGY levels but DO NOT share chemical properties

a)

periods

b)

g

c)

f

d)

s

169.

__________________ is the ability of a substance to combine or change into another substance.

a)

r

b)

d

c)

chemical property

d)

a

170.

What is the right part of a chemical equation called...

2H2 + O2 --> 2H2O

a)

w

b)

s

c)

products

d)

s

171.

what characteristics describe a base

a)

1

b)

2

c)

3

d)

bitter, slippery, indicator turns blue, pH greater than 7, produces hydroxide ions (OH-)

172.

Neutral atoms contain equal numbers of (PE)

a)

protons and electrons

b)

2

c)

3

d)

4

173.

Which characteristics describe an acid?

a)

g

b)

f

c)

sour, indicator turns red, pH less than 7, produces hydrogen ions (H+)

174.

______________ is atoms or a group of atoms with a positive or negative charge resulting from the loss or gain of electrons

a)

ions

b)

f

c)

s

d)

s

175.

a strong acid

a)

z

b)

c

c)

s

d)

all the choices

176.

In the formation of a covalent bond, electrons are

a)

v

b)

shared

c)

x

d)

v

177.

What atom matches this electron configuration 1s22s22p63s2

a)

d

b)

c

c)

magnesium

d)

x

178.

A covalent bond is a bond between a ___________ and a ___________.

co togther/same

a)

f

b)

v

c)

nonmetal, nonmetal

d)

g

179.

Round the following to have only 4 sigfigs.

3899934434

a)

e

b)

f

c)

s

d)

3.900x109

180.

strong acids are

a)

d

b)

f

c)

strong electrolytes

d)

s

181.

The formation of a solid product in a chemical reaction is represented by the symbol

a)

d

b)

(s)

c)

c

d)

v

182.

daltons law states

a)

d

b)

that the total pressure exerted by the mixture of non-reactive gases is equal to the sum of the partial pressures of individual gases

c)

f

d)

x

2022 chemistry final

Total questions: 182

Worksheet time: 2hrs 31mins

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