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WorksheetsFINAL EXAMINATION IN GENCHEM
Total questions: 100
Worksheet time: 2hrs 40mins
A/An __________ is a substance that releases H+ ions in an aqueous solution.
Acid
Base
Neutral
Aqueous means _____________.
Air
Water
Fire
Land
A ___________ acid breaks down completely in water and gives off many H+ ions.
strong
weak
A __________ acid only partially breaks down. It gives off much less H+ than strong acid.
strong
weak
Acids in foods taste sour and produce a burning or prickling feeling on the skin.
True
False
Acids do not contain hydrogen
True
False
_____________ is a substance that releases hydroxide (OH-) ions in an aqueous solution.
Acid
Base
Neutral
Bases contain hydroxide ions (OH-)
True
False
Some strong bases can burn the skin as badly as strong acids.
True
False
pH < 7
Acid
Base
Neutral
pH > 7
Acid
Base
Neutral
pH = 7
Acid
Base
Neutral
React with metals to produce a compound and hydrogen gas.
Acid
Base
Neutral
Do not react with metals to produce a compound and hydrogen gas.
Acid
Base
Neutral
pH stands for "potential of ____________"
helium
hydrogen
hydroxide
none of the options
· The strength of an acid or base is usually measured using __________.
pH scale
pH value
pH unit
pH meter
A/An ___________ substance is neither an acid nor a base and has a pH value equal to 7.
simple
homogeneous
neutral
heterogeneous
A pure water has a pH value of?
5
6
7
8
When an acid and base react with each other, the characteristic properties of both are destroyed. This called neutralization.
True
False
It is the central part of an atom.
Nucleus
Proton
Neutron
Electron
The following sub-atomic particles are found inside the nucleus of an atom EXCEPT?
Proton
Neutron
Electron
E = mc2
Einstein's equation
Rutherford's equation
Chadwick's equation
Thompson's equation
Electromagnetic radiation is a form of energy that can pass through empty space.
True
False
The time required for a whole of a sample to decay is called half life.
True
False
Atomic number = proton = electron
True
False
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.
Inorganic Chemistry
Organic Chemistry
General Chemistry
Biochemistry
TRUE OR FALSE: Organic chemistry is a highly creative science in which chemists create new molecules and explore the properties of existing compounds.
True
False
TRUE OR FALSE: Organic chemistry is the area of chemistry that involves the study of oxygen and its compounds.
True
False
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.
True
False
____________ are aliphatic hydrocarbons having C—C and C—H bonds.
Alkane
Alkyl
Alkene
Alkyne
Acyclic alkanes molecular formula is _________
CnH2n+1
CnH2n+2
CnH2n+3
CnH2n
What is the molecular formula for cycloalkanes?
CnH2n+1
CnH2n+2
CnH2n+3
CnH2n
Cycloalkanes have molecular formula CnH2n and contain carbon atoms arranged in a _____.
chain
group
ring
line
Simple cycloalkanes are named by adding the prefix _____- to the name of the acyclic alkane having the same number of carbons.
cyclo
hexa
hepta
deca
The name of every organic molecule has 3 parts EXCEPT?
Prefix
Parent name
Suffix
Nickname
TRUE OR FALSE: Alkanes are connected by single bond.
True
False
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.
True
False
TRUE OR FALSE: Cycloalkanes are named by using similar rules, but the prefix cyclo- immediately precedes the name of the parent.
True
False
The following alkanes doesn't have an isomer/s EXCEPT?
methane
ethane
propane
butane
It is an alkane with only 1 Carbon atom.
methane
ethane
propane
butane
C2H6
methane
ethane
propane
butane
What is the molecular formula of propane?
C2H6
C3H6
C3H8
C4H10
An alkane containing 4 carbon atoms and 2 constitutional isomers.
butane
pentane
hexane
heptane
C5H12
butane
pentane
hexane
heptane
C6H14
butane
pentane
hexane
heptane
Molecular formula of heptane?
C3H8
C5H12
C7H16
C9H20
C8H18
hexane
heptane
octane
nonane
C9H20
heptane
octane
nonane
decane
C10H22
octane
nonane
decane
eicosane
C20H42
octane
nonane
decane
eicosane
What is the common name for methylbenzene?
Toluene
Styrene
Aniline
Anisole
Resonance structure of benzene was developed by __________________.
Linus Pauling
Aristotle
Gregor Mendel
Isaac Newton
It is a term used to describe aromatic compounds.
arene
toluene
aniline
anisole
TRUE OR FALSE: The functional group of phenol is a hydroxyl group bonded to benzene ring
TRUE
FALSE
-OH group represents _________________.
Alcohol
Ether
Phenol
Thiol
The word "thio" means?
Sulfur
Oxygen
Hydrogen
Silicon
TRUE OR FALSE: Thiols replace the O in an alcohol with an H.
TRUE
FALSE
TRUE OR FALSE: Ethers remove both H atoms from water and add two alkyl groups in their place.
TRUE
FALSE
C2H5OH
Methanol
Ethanol
Propanol
Butanol
CH4OH
Methanol
Ethanol
Propanol
Butanol
It is a hydrocarbon with carbon-carbon double bond.
Alkane
Alkene
Alkyne
Alkyl
The following are examples of Alkenes EXCEPT?
Ethene
Butene
Hexene
Anilene
Hydrocarbons that contain carbon-carbon triple bonds are called __________.
Alkane
Alkene
Alkyne
Alkyl
TRUE OR FALSE: Acetylene, the simplest alkyne is produced industrially from methane and steam at high temperature.
TRUE
FALSE
It is anything that has mass and takes up space.
Matter
Compound
Element
Mixture
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.
Biology
Chemistry
Physics
Earth Science
______ is composed of at least two kinds of atoms.
Element
Compound
It has a definite volume, a definite shape, and is rigid.
Solid
Liquid
Gas
Plasma
It has a definite volume but no definite shape. (assumes the shape of container).
Solid
Liquid
Gas
Plasma
It has no distinct volume, no distinct shape and can be easily compressed to occupy a smaller volume. (assumes shape and volume of container)
Solid
Liquid
Gas
Plasma
______ are the building blocks of matter.
Atoms
Substances
Molecules
Compounds
It is the most abundant element in the Earth's crust by mass.
Oxygen
Silicon
Aluminum
Iron
It is the most abundant element in the human body by mass.
Oxygen
Carbon
Hydrogen
Nitrogen
_________ properties can only be observed when a substance is changed into another substance.
Physical
Chemical
________ properties can be observed without changing a substance into another substance. Some examples include color, odor, density, melting point, boiling point, and hardness.
Physical
Chemical
__________ are changes in matter that do not change the composition of a substance. Examples include changes of state, temperature, and volume.
Physical
Chemical
_________ changes result in new substances. Examples include combustion, oxidation and decomposition.
Physical
Chemical
It is the capacity to do work or transfer heat.
Energy
Work
Heat
Force
It is the energy transferred when a force exerted on an object causes a displacement of that object.
Energy
Work
Heat
Force
It is the energy used to cause the temperature of an object to increase.
Energy
Work
Heat
Force
It is any push or pull on an object.
Energy
Work
Heat
Force
It is the energy in motion.
Kinetic
Potential
_______ energy of an object depends on its relative position compared to other objects.
Kinetic
Potential
1km is equal to ____ meters.
1
10
100
1000
Convert 500 grams to kilograms.
0.5
5
50
500
How many significant figures are there in: 0123456789
8
9
10
11
How many significant figures are there in: 1001
2
3
4
5
How many significant figures are there in: 0.010
1
2
3
4
How many significant figures are there in: 1 000 000
1
3
5
7
How many significant figures are there in: 0.12345000
5
8
9
10
Element with atomic number 14?
Aluminum
Silicon
Phosphorus
Sulfur
Element with atomic number 30?
Zinc
Zirconium
Calcium
Tin
Element with atomic number 47?
Gold
Silver
Palladium
Cadmium
Element with 6 protons?
Carbon
Hydrogen
Oxygen
Nitrogen
Element with 8 protons?
carbon
nitrogen
oxygen
hydrogen
Symbol of the element Tungsten?
Tu
T
w
W
What is the symbol of the element Sodium?
So
Sd
Na
Nd
What is the symbol of the element Potassium?
Po
k
K
P
What is the symbol of the element Tin?
Ti
T
Sn
Sb
What is the name of the element with Pb symbol?
Palladium
Lead
Pollonium
Promethium
