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FINAL EXAMINATION IN GENCHEM

Total questions: 100

Worksheet time: 2hrs 40mins

Name
Class
Date
1.

A/An __________ is a substance that releases H+ ions in an aqueous solution.

a)

Acid

b)

Base

c)

Neutral

2.

Aqueous means _____________.

a)

Air

b)

Water

c)

Fire

d)

Land

3.

A ___________ acid breaks down completely in water and gives off many H+ ions.

a)

strong

b)

weak

4.

A __________ acid only partially breaks down. It gives off much less H+ than strong acid.

a)

strong

b)

weak

5.

Acids in foods taste sour and produce a burning or prickling feeling on the skin.

a)

True

b)

False

6.

Acids do not contain hydrogen

a)

True

b)

False

7.

_____________ is a substance that releases hydroxide (OH-) ions in an aqueous solution.

a)

Acid

b)

Base

c)

Neutral

8.

Bases contain hydroxide ions (OH-)

a)

True

b)

False

9.

Some strong bases can burn the skin as badly as strong acids.

a)

True

b)

False

10.

pH < 7

a)

Acid

b)

Base

c)

Neutral

11.

pH > 7

a)

Acid

b)

Base

c)

Neutral

12.

pH = 7

a)

Acid

b)

Base

c)

Neutral

13.

React with metals to produce a compound and hydrogen gas.

a)

Acid

b)

Base

c)

Neutral

14.

Do not react with metals to produce a compound and hydrogen gas.

a)

Acid

b)

Base

c)

Neutral

15.

pH stands for "potential of ____________"

a)

helium

b)

hydrogen

c)

hydroxide

d)

none of the options

16.

· The strength of an acid or base is usually measured using __________.

a)

pH scale

b)

pH value

c)

pH unit

d)

pH meter

17.

A/An ___________ substance is neither an acid nor a base and has a pH value equal to 7.

a)

simple

b)

homogeneous

c)

neutral

d)

heterogeneous

18.

A pure water has a pH value of?

a)

5

b)

6

c)

7

d)

8

19.

When an acid and base react with each other, the characteristic properties of both are destroyed. This called neutralization.

a)

True

b)

False

20.

It is the central part of an atom.

a)

Nucleus

b)

Proton

c)

Neutron

d)

Electron

21.

The following sub-atomic particles are found inside the nucleus of an atom EXCEPT?

a)

Proton

b)

Neutron

c)

Electron

22.

E = mc2

a)

Einstein's equation

b)

Rutherford's equation

c)

Chadwick's equation

d)

Thompson's equation

23.

Electromagnetic radiation is a form of energy that can pass through empty space.

a)

True

b)

False

24.

The time required for a whole of a sample to decay is called half life.

a)

True

b)

False

25.

Atomic number = proton = electron

a)

True

b)

False

26.

It is the study of the structure, properties, composition, reactions, and preparation of carbon-containing compounds, which include not only hydrocarbons but also compounds with any number of other elements, including hydrogen (most compounds contain at least one carbon–hydrogen bond), nitrogen, oxygen, halogens, phosphorus, silicon, and sulfur.

a)

Inorganic Chemistry

b)

Organic Chemistry

c)

General Chemistry

d)

Biochemistry

27.

TRUE OR FALSE: Organic chemistry is a highly creative science in which chemists create new molecules and explore the properties of existing compounds.

a)

True

b)

False

28.

TRUE OR FALSE: Organic chemistry is the area of chemistry that involves the study of oxygen and its compounds.

a)

True

b)

False

29.

TRUE OR FALSE: The range of application of organic compounds is enormous and also includes, but is not limited to, pharmaceuticals, petrochemicals, food, explosives, paints, and cosmetics.

a)

True

b)

False

30.

____________ are aliphatic hydrocarbons having C—C and C—H bonds.

a)

Alkane

b)

Alkyl

c)

Alkene

d)

Alkyne

31.

Acyclic alkanes molecular formula is _________

a)

CnH2n+1

b)

CnH2n+2

c)

CnH2n+3

d)

CnH2n

32.

What is the molecular formula for cycloalkanes?

a)

CnH2n+1

b)

CnH2n+2

c)

CnH2n+3

d)

CnH2n

33.

Cycloalkanes have molecular formula CnH2n and contain carbon atoms arranged in a _____.

a)

chain

b)

group

c)

ring

d)

line

34.

Simple cycloalkanes are named by adding the prefix _____- to the name of the acyclic alkane having the same number of carbons.

a)

cyclo

b)

hexa

c)

hepta

d)

deca

35.

The name of every organic molecule has 3 parts EXCEPT?

a)

Prefix

b)

Parent name

c)

Suffix

d)

Nickname

36.

TRUE OR FALSE: Alkanes are connected by single bond.

a)

True

b)

False

37.

TRUE OR FALSE: When numbering a carbon chain results in the same numbers from either end of the chain, assign the lower number alphabetically to the first substituent.

a)

True

b)

False

38.

TRUE OR FALSE: Cycloalkanes are named by using similar rules, but the prefix cyclo- immediately precedes the name of the parent.

a)

True

b)

False

39.

The following alkanes doesn't have an isomer/s EXCEPT?

a)

methane

b)

ethane

c)

propane

d)

butane

40.

It is an alkane with only 1 Carbon atom.

a)

methane

b)

ethane

c)

propane

d)

butane

41.

C2H6

a)

methane

b)

ethane

c)

propane

d)

butane

42.

What is the molecular formula of propane?

a)

C2H6

b)

C3H6

c)

C3H8

d)

C4H10

43.

An alkane containing 4 carbon atoms and 2 constitutional isomers.

a)

butane

b)

pentane

c)

hexane

d)

heptane

44.

C5H12

a)

butane

b)

pentane

c)

hexane

d)

heptane

45.

C6H14

a)

butane

b)

pentane

c)

hexane

d)

heptane

46.

Molecular formula of heptane?

a)

C3H8

b)

C5H12

c)

C7H16

d)

C9H20

47.

C8H18

a)

hexane

b)

heptane

c)

octane

d)

nonane

48.

C9H20

a)

heptane

b)

octane

c)

nonane

d)

decane

49.

C10H22

a)

octane

b)

nonane

c)

decane

d)

eicosane

50.

C20H42

a)

octane

b)

nonane

c)

decane

d)

eicosane

51.

What is the common name for methylbenzene?

a)

Toluene

b)

Styrene

c)

Aniline

d)

Anisole

52.

Resonance structure of benzene was developed by __________________.

a)

Linus Pauling

b)

Aristotle

c)

Gregor Mendel

d)

Isaac Newton

53.

It is a term used to describe aromatic compounds.

a)

arene

b)

toluene

c)

aniline

d)

anisole

54.

TRUE OR FALSE: The functional group of phenol is a hydroxyl group bonded to benzene ring

a)

TRUE

b)

FALSE

55.

-OH group represents _________________.

a)

Alcohol

b)

Ether

c)

Phenol

d)

Thiol

56.

The word "thio" means?

a)

Sulfur

b)

Oxygen

c)

Hydrogen

d)

Silicon

57.

TRUE OR FALSE: Thiols replace the O in an alcohol with an H.

a)

TRUE

b)

FALSE

58.

TRUE OR FALSE: Ethers remove both H atoms from water and add two alkyl groups in their place.

a)

TRUE

b)

FALSE

59.

C2H5OH

a)

Methanol

b)

Ethanol

c)

Propanol

d)

Butanol

60.

CH4OH

a)

Methanol

b)

Ethanol

c)

Propanol

d)

Butanol

61.

It is a hydrocarbon with carbon-carbon double bond.

a)

Alkane

b)

Alkene

c)

Alkyne

d)

Alkyl

62.

The following are examples of Alkenes EXCEPT?

a)

Ethene

b)

Butene

c)

Hexene

d)

Anilene

63.

Hydrocarbons that contain carbon-carbon triple bonds are called __________.

a)

Alkane

b)

Alkene

c)

Alkyne

d)

Alkyl

64.

TRUE OR FALSE: Acetylene, the simplest alkyne is produced industrially from methane and steam at high temperature.

a)

TRUE

b)

FALSE

65.

It is anything that has mass and takes up space.

a)

Matter

b)

Compound

c)

Element

d)

Mixture

66.

It is the study of matter, its properties and the changes it undergoes. It is central to our fundamental understanding of many science-related fields.

a)

Biology

b)

Chemistry

c)

Physics

d)

Earth Science

67.

______ is composed of at least two kinds of atoms.

a)

Element

b)

Compound

68.

It has a definite volume, a definite shape, and is rigid.

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

69.

It has a definite volume but no definite shape. (assumes the shape of container).

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

70.

It has no distinct volume, no distinct shape and can be easily compressed to occupy a smaller volume. (assumes shape and volume of container)

a)

Solid

b)

Liquid

c)

Gas

d)

Plasma

71.

______ are the building blocks of matter.

a)

Atoms

b)

Substances

c)

Molecules

d)

Compounds

72.

It is the most abundant element in the Earth's crust by mass.

a)

Oxygen

b)

Silicon

c)

Aluminum

d)

Iron

73.

It is the most abundant element in the human body by mass.

a)

Oxygen

b)

Carbon

c)

Hydrogen

d)

Nitrogen

74.

_________ properties can only be observed when a substance is changed into another substance.

a)

Physical

b)

Chemical

75.

________ properties can be observed without changing a substance into another substance. Some examples include color, odor, density, melting point, boiling point, and hardness.

a)

Physical

b)

Chemical

76.

__________ are changes in matter that do not change the composition of a substance. Examples include changes of state, temperature, and volume.

a)

Physical

b)

Chemical

77.

_________ changes result in new substances. Examples include combustion, oxidation and decomposition.

a)

Physical

b)

Chemical

78.

It is the capacity to do work or transfer heat.

a)

Energy

b)

Work

c)

Heat

d)

Force

79.

It is the energy transferred when a force exerted on an object causes a displacement of that object.

a)

Energy

b)

Work

c)

Heat

d)

Force

80.

It is the energy used to cause the temperature of an object to increase.

a)

Energy

b)

Work

c)

Heat

d)

Force

81.

It is any push or pull on an object.

a)

Energy

b)

Work

c)

Heat

d)

Force

82.

It is the energy in motion.

a)

Kinetic

b)

Potential

83.

_______ energy of an object depends on its relative position compared to other objects.

a)

Kinetic

b)

Potential

84.

1km is equal to ____ meters.

a)

1

b)

10

c)

100

d)

1000

85.

Convert 500 grams to kilograms.

a)

0.5

b)

5

c)

50

d)

500

86.

How many significant figures are there in: 0123456789

a)

8

b)

9

c)

10

d)

11

87.

How many significant figures are there in: 1001

a)

2

b)

3

c)

4

d)

5

88.

How many significant figures are there in: 0.010

a)

1

b)

2

c)

3

d)

4

89.

How many significant figures are there in: 1 000 000

a)

1

b)

3

c)

5

d)

7

90.

How many significant figures are there in: 0.12345000

a)

5

b)

8

c)

9

d)

10

91.

Element with atomic number 14?

a)

Aluminum

b)

Silicon

c)

Phosphorus

d)

Sulfur

92.

Element with atomic number 30?

a)

Zinc

b)

Zirconium

c)

Calcium

d)

Tin

93.

Element with atomic number 47?

a)

Gold

b)

Silver

c)

Palladium

d)

Cadmium

94.

Element with 6 protons?

a)

Carbon

b)

Hydrogen

c)

Oxygen

d)

Nitrogen

95.

Element with 8 protons?

a)

carbon

b)

nitrogen

c)

oxygen

d)

hydrogen

96.

Symbol of the element Tungsten?

a)

Tu

b)

T

c)

w

d)

W

97.

What is the symbol of the element Sodium?

a)

So

b)

Sd

c)

Na

d)

Nd

98.

What is the symbol of the element Potassium?

a)

Po

b)

k

c)

K

d)

P

99.

What is the symbol of the element Tin?

a)

Ti

b)

T

c)

Sn

d)

Sb

100.

What is the name of the element with Pb symbol?

a)

Palladium

b)

Lead

c)

Pollonium

d)

Promethium