Download State the main methods used to prepare polymers?

Item ID:
School:
Subject: Organic chemistry
Standard: 22.1
Level: advanced
Item Type: MC
Points:
DOK:2
Correct Response: C
When a double bond is formed between two atoms, one of the bonds is a sigma
bond and the other is a pi bond. The pi bond is created by the overlap of which of
the following?
A.
B.
C.
D.
sp2 hybrid orbitals
sp3 hybrid orbitals
p orbitals
s orbitals
Item ID:
Standard: 22.2
School:
Subject: organic compounds Level: Advanced
Previous use:
Item Type: MC
Points:
DOK:2
Correct Response: C
Item: to have a cis and trans isomers, a compound must have which of the
following?
A. sp bonded carbon atoms
B. sp3 bonded carbon atoms
C. sp2 bonded carbon atoms.
D. (A) and (B)
Item ID:
School:
Subject: Organic
compounds
Standard: 22.3
Item Type: MC
Points:
Level: advanced chemistry
DOK:2
Correct Response: C
Which of the following is not related to sereo isomers?
A. Require four different substituent’s attached to one carbon atom.
B. Have virtually identical physical properties
C. Often have the same biological activities
D. Are mirror images.
Item ID:
Standard: 22.4
Item Type: MC
School:
Subject: aliphatic
compounds
Points:
Level: G12A
DOK: 2
Correct Response: D
Which statement explains how nucleophilic substitution is initiated in an SN1
mechanism?
a. An electrophile approaches the carbon being attached.
b. A nucleophile approaches the carbon being attached.
c. An electrophile readily detaches from the attached carbon.
d. A nucleopile readily detaches from the attached carbon.
Item ID:
School:
Subject: organic reactions
Standard: 22.6
Level: advanced chemistry
Item Type: MC
Points:
DOK:2
Correct Response: B
What are the products of the following hydrolysis reaction?
H3CCOCl +H2O → …………… + ……………..
A.
CH3CHO +HCl
B.
CH3COOH+HCl
C.
CH3CH3 +OH
D.
CH3CH2OH +HCl
Item ID:
Standard: 23 - 1
School:
Item ID:
Standard: 22.5
Subject:
Level: G12A
School:
Subject: ORGANIC
What
is the name of the following
structure?
reactions
Level:compound
advanced chemistry
Item Type: MC
Points:
Item Type: MC
DOK: 2
Points:
Correct Response: c
DOK:2
Correct Response: B
In the reaction below which of the following show the Lewis acid and Lewis base?
CH3-CH2-CH2Cl + NaOH
NaCl + CH3CH2CH2OH
A. CH3-CH2-CH2Cl Lewis base , NaOH Lewis acid
B. CH3-CH2-CH2Cl Lewis acid , NaOH Lewis base
a- 2-benzene-2-chlorobutane
C. CH3-CH2-CH2Cl Lewis acid , CH3CH2CH2OH Lewis base
b- 2-chloro-2- phenyl pentane
D. NaOH Lewis base , NaCl Lewis acid
c- 2- chloro-2- phenyl butane
d- 3- chloro-3- phenylpentane
Item ID:
School:
Subject:
Standard: 23 – 1
Level: G12A
What is the name of the following compound ?
a- Ester Benzene benzoate
b- Ester phenyl benzoate
Item Type: MC
Points:
DOK: 2
Correct Response: b
c- Diphenylketone
d- Di phenyl methanone
Item ID:
School:
Subject:
Standard: 23 – 2
Item Type: MC
Points:
DOK: 2
Correct Response: c
Level: G12A
Which of the following compounds can rotate all the bonds?
a-ID:
C6H6
Item
School:
b- C6H12
Subject:
c- C6H14
d- C6H10
Standard: 23 – 3
Level: G12A
Item Type: MC
Points:
DOK: 2
Correct Response: c
Which of the following is the product(s) of nitration of methyl benzene?
a- 2-nitromethyl benzene only
b- 4- nitromethyl benzene only
c- 2-nitrotoluene and 4-nitrotoluen
d- 2- nitro toluene and 3-nitrotoluen
Item ID:
School:
Subject:
Standard: 23 – 4
Level: G12A
Item Type: MC
Points:
DOK: 2
Correct Response: b
Which of the following is true about reaction of benzene with nitric acid in
presence of sulphuric acid ?
a- The product is benzene sulfonic acid
b- The product is nitrobenzene
c- The type of reaction is nucleophilic substitution
d- The nucleophile is NO2+ ion
Item ID:
School:
Subject:
Standard: 23 – 4
Level: G12A
Item Type: MC
Points:
DOK: 2
Correct Response: a
What is the effect of delocalization on reaction of benzene?
a- Benzene reacts by electrophilic substitution reaction
b- Benzene reacts by nucleophilic substitution reaction
c- Benzene reacts by addition reaction in all of its reactions
d- Benzene can react by elimination reaction
Item ID:
School:
Subject:
Standard: 23 – 5
Level: G12A
Item Type: MC
Points:
DOK: 2
Correct Response: d
What is the product of the reaction between phenol and dilute nitricacid?
a- 2-,3- dinitrophenol
b- 2-nitrophenol and 3-nitro phenol
c- 2,4-dinitrophenol
d- 2-nitrophenol and 4-nitrophenol
Item ID:
School:
Subject:
Standard: 23 – 5
Level: G12A
Item Type: MC
Points:
DOK: 2
Correct Response: b
Which of the following compounds is the most acidic?
a- Cyclohexanol
b- Hydroxybenzene
c- Cyclohexane
d- Aminobenzene
Item ID:
School:
Subject:
Standard: 23 – 6
Level: G12A
Item Type: MC
Points:
DOK: 2
Correct Response: b
What is the product of the reduction of nitro benzene in presence of HCl and iron?
a- Benzoic acid
b- Phenyl amine
c- Phenol
d- Toluene
Item ID:
School:
Subject:
Standard: 23 – 7
Level: G12A
Item Type: MC
Points:
DOK: 2
Correct Response: b
What is the type of the mechanism of azo (diazo) coupling reaction?
a- Nucleophilic aromatic substitution
b-Electrophilic aromatic substitution
c- Electrophilic addition
d- Nucleophilic addition
Item ID:
School:
Standard: 23 – 7
Item Type: MC
Points:
Subject:
Level: G12A
DOK: 2
Correct Response: c
Which is the main compound can be used for production of azo-dyes?
a- Benzaldehyde
b- Benzoic acid
c- Amino benzene
d- Tolouene
Item ID:
School:
Subject: Macromolecules
Previous use:
Standard: 24.1
Level: Advanced
Item Type: MC
Points:
DOK:
Correct Response:D
What is the monomer used to form the polymer –[-CH2CHCl-]-n ?
A. CH3CH2Cl
B. CH
CCl
C. CHnCHCln
D. CH2 = CHCl
Item ID:
School:
Subject: Macromolecules
Standard: 24.1
Level: Advanced
Item Type: MC
Points:
DOK:2
Correct Response:C
what is the functional group needed for an organic acid to form a peptide bond?
A. –C-O-H
B. –C=O
C. –NH2
D. –CH3
Item ID:
School:
Subject: organic compounds
Standard: 22.1
Level: G12 –A
Item Type: CR
Points:
DOK:2
Complete the following table
C2H6
C2H4
Type of hybridization
Bond angle
C2H6
C2H4
Type of hybridization
Sp3
Sp 2
Bond angle
109.5
120
Item ID:
Standard: 22.3
Item Type: CR
School:
Points:
Subject: organic compounds Level: G12 –A
DOK: 2
Draw the structural formula of each of the four stereo isomers of the
following structural formula :
CH3CH(OH)CH=CHCH3
CH3CH(OH)
CH3
H
CH3
C=C
C=C
H
H
CH3CH(OH)
H
H
C
C
CH3CH(OH) OH
CH3
CH3
H
OH CH3CH(OH)
Item ID:
School:
Subject: organic compounds
Standard: 22.3
Level: G12 –A
Item Type: CR
Points:
DOK: 2
1,2dicholro cyclopropane has a cis-trans isomers
Explain why this is so, and draw the structure of the two isomers.
Answer
Due to the restricted movement of the sigma bond in the cyclic structure.
Item ID:
Standard: 22.4
Item Type: CR
School:
Points:3
Subject: organic reactions Level: G 12-A
DOK: 2
a)
When propene reacts with hydrogen
+
chloride ,initial attack is by H on the pi electrons on the double bond .write
the structures of the two possible carbocations formed as a result of this
attack.
b)
c)
Which of the carbocations is more stable?
Use your answer in (b) to explain why
virtually 1-chloropropane is not formed in the reaction of propene with
hydrochloric acid.
Answer :
a) CH3CH2CH2+ OR CH3 CH+CH3
b) there is only one major product.
c) This is in line with Markovnikov's Rule which says:
When a compound HX is added to an unsymmetrical alkene, the hydrogen becomes
attached to the carbon with the most hydrogens attached to it already.
In this case, the hydrogen becomes attached to the CH2 group, because the CH2 group has
more hydrogens than the CH group.
Notice that only the hydrogens directly attached to the carbon atoms at either end of the
double bond count. The ones in the CH3 group are totally irrelevant.
Item ID:
School:
Subject: Organic reactions
Standard: 22.4
Level: G12 -A
Item Type: CR
Points:
DOK:2
1. Complete the following equation:
CH3CH2Br +NH3  ………………..
2. Write the mechanism of the reaction
CH3CH2Br +NH3  CH3CH2NH2
The mechanism involves two steps. The first is a simple
nucleophilic substitution reaction:
.
In the second step of the reaction an ammonia molecule may
remove one of the hydrogens on the -NH3+. An ammonium
ion is formed, together with a primary amine - in this case,
ethylamine.
Item ID:
Standard: 22.5
Item ID:
School:
Subject: organic compounds
Standard: 22.4
Level: G12 -A
Item Type: CR
Item Type: CR
Points: 3
DOK:2
A. Explain why 1-bromopropane and 2-bromo2-methyl propane undergo
nucleophilic substitution at different rates.
B. Give examples for this reaction.
A. CH2Br-CH2-CH3
Primary haloalkane
SN2 mechanism Depends on the rate of both the haloalkane
and the nucliophile
CH3-C(CH3)Br-CH3
tertiary haloalkane SN1 Mechanism
the rate depends on the subtract only
B.
CH2Br-CH2-CH3 +OH- CH2OH-CH2CH3
CH3-C(CH3)Br-CH3 +OH- CH3-C(CH3)OHCH3
School:
Subject: organic compounds
Level: G12 -A
Points:
DOK:2
The reaction
C6H6 +HNO3  C6H5NO2 + H2O
a) What is the electrophile in this reaction? What is the source of the electrons?
b) in terms of Lewis acids and Lewis bases explain the cause of the nitration of
benzene in this reaction.
a)NO2+ From HNO3 Is the electrophile and the source is the benzene ring
b)the benzene ring is a electron pair donor Lewis base and the electrophile is Lewis acid
Item ID:
School:
Subject: Organic reactions
Standard: 22.6
Level: G12 -A
Item Type: CR
Points:
DOK:3
Give the formula of two organic compounds that will react together to give each of
the following products:
I.
II.
1.
CH3COOCH3
CH3CH2CONH2
Product
Reactant (1)
Reactant (2)
CH3COOCH3
CH3COCl or
CH3COOH
CH3OH
2.
CH3CH2CONH2
Item ID:
School:
Subject: :
CH3 CH2COCl
Standard: 23-1
Level: G12 -A
NH3
Item Type: CR
Points:
DOK: 2
Give the name of the following compound.
2,5-dichloro-3-methyl phenol
2,5-dichloro-3-methylhydroxy benzene
Item ID:
School:
Subject: :
Standard: 23-1
Level: G12 -A
Give the name of the following compound.
Item Type: CR
Points:
DOK: 2
2—phenyl- trans --2-butene
Item ID:
School:
Subject: :
Standard: 23-2
Level: G12 -A
Item Type: CR
Points:
DOK: 2
From the diagram above there is a difference between the expected value for the
enthalpy change of hydrogenation of kekule- form of benzene
( -360Kjmol-1 ) and the experimental value of hydrogenation of real benzene
equal (- 208 Kjmol-1 ) Explain these change in the value of enthalpy?
Because the delocalization in benzene ring make it very stable . That make it need more
energy to break ; these pi bonds
Item ID:
School:
Subject: :
Standard: 23-2
Item Type: CR
Points:
DOK: 2
Level: G12 -A
Complete the following table
Ethene
Benzene
Ethane
Ethene
Benzene
Ethane
Type of reaction In
standard condition
addition
Substitution
Substitution
Shape of molecule
Trigonal planer
Hexagonal planer
Tetrahedral
Position of pi bonds.
Localize
delocalized
No pi bond
Type of reaction In
standard conditions
Stability
Shape of molecule
Position of pi bonds.
rotation of C-C bonds
rotation of C-C
bonds
Item ID:
School:
Subject:
Can’t rotate
Can’t rotate
Standard: 23-3
Level: G12 –A
Can rotate
Item Type: CR
Points:
DOK: 3
The products of the reaction between toluene and chlorine is depend on
presence of a catalyst or sunlight .Explain that by equations.
Item ID:
School:
Subject: :
Standard: 23-3
Level: G12 -A
Item Type: CR
Points:
DOK: 3
In lab how can we distinguish between toluene and benzene using Potassium
permanganate .Explain your answer using equation.
By adding KMnO4 to both of them in alkali solution it can oxidized the toluene
and give benzoic acid the color is change.
But with benzene no reaction and the color of KMnO4 is not change
Item ID:
School:
Subject: :
Standard: 23-4
Level: G12 -A
Item Type: CR
Points:
DOK: 3
Write the mechanism of nitration of benzene .then answer the following questions
a- Identify the electrophile
b- What is the source of electron in the reaction?
a-Electrophile ion Is : NO2+
b-Benzene ring
Item ID:
Standard: 23-4
Item Type: CR
School:
Points:
Subject: :
Level: G12 -A
DOK: 3
Complete the following reaction the answer Questions below:
C6H6 + CH3COCl 
------------------------- + ------------------------------
a- What is the name given for the major product?
b- What is the catalyst used for this reaction?
c- What is the electrophile of the reaction?
d- Write the mechanism of the reaction?
C6H6 + CH3COCl  C6H5-COCH3 + HCl
a- Phenyl ethanone
b- AlCl3 or FeCl3
c- CH3CO+
d-
Or methylphenyl ketone
Item ID:
School:
Subject: :
Standard: 23-5
Level: G12 –A
Item Type: CR
Points:
DOK: 2
Compare between phenol and cyclohexanol in terms of acidity.
Explain your answer.
Acidity
Phenol
Cyclohexanol
Weak acid
Not acid
Because oxygen atom share with one of its lone pair of electrons to benzene ring in
delocalization and increase the density of electrons around benzene ring .Easy to lose
H+ and form phenoxide ion which is more stable than phenol .
Item ID:
Standard: 23-5
Item Type: CR
School:
Points:
Subject: :
Level: G12 -A
DOK: 2
Write equations to represent the following reactions
1- Phenol with sodium metal
2- Phenol with concentrated nitric acid in presence of H2SO4
Item ID:
School:
Subject: :
Standard: 23-6
Level: G12 -A
Item Type: CR
Points:
DOK: 2
Write an equation to prepare phenylamine by the reduction of nitrobenzene
Item ID:
School:
Subject: :
Standard: 23-7
Level: G12 -A
Explain why azo-dye compounds used in food ?
Item Type: CR
Points:
DOK: 2
Because they are not toxic
Item ID:
School:
Subject: :
Standard: 23-7
Level: G12 -A
The following equations show the formation of azo-dye.
NH2
+ HNO2 + HCl
below 5°C
A
nitrous acid
OH
A+
NaOH
B + HCl
Write the chemical structure for:
a) Compound (A)
b) Compound (B)
A-
+ 2H2O
Item Type: CR
Points:
DOK: 3
B-
Item ID:
School:
Subject: :
Standard: 23-7
Level: G12 -A
Item Type: CR
Points:
DOK: 3
Using benzene, conc. nitric acid, conc. sulphuric acid, Sn , conc. HCl and phenol.
Write an equation to prepare azo-dye.
Item ID:
School:
Subject: :
Standard: 24-1
Level: G12 -A
Item Type: CR
Points:
DOK: 2
What are the products of hydrolysis of the following protein?
Item ID:
School:
Subject: :
Standard: 24-1
Level: G12 -A
State the methods which used to separate protein.
1- Ion-exchange chromatography
2- Electrophoresis
24.
Item Type: CR
Points:
DOK: 2
Item ID:
School:
Subject: :
Standard: 24-1
Level: G12 –A
Item Type: CR
Points:
DOK: 2
Proteins are formed from combinations of 20 different amino acids through
peptide bonds .Write an equation to show the formation of this bond?
Item ID:
School:
Subject: macromolecules
Standard: 24.1
Level: G12 –A
Item Type: CR
Points:
DOK:2
A. Identify the process that breaks down a protein into its constituent
monomers.
B. Write the chemical equation for this process.
Proteins can be broken down into amino acids from which they are made. This
process is called hydrolysis. Hydrolysis is the reverse of condensation as
represented in
Item ID:
School:
Subject: macromolecules
Standard: 24.4
Level: G12 -A
Item Type: CR
Points:
DOK:2
How are the polymer chains in rubber changed by the vulcanization process?
Vulcanization or vulcanisation refers to a specific curing process of rubber
involving high heat and the addition of sulfur or other equivalent curatives. It
is a chemical process in which polymer molecules are linked to other polymer
molecules by atomic bridges composed of sulfur atoms or carbon to carbon
bonds.
Item ID:
School:
Subject: :
Standard: 24-6
Level: G12 -A
Item Type: CR
Points:
DOK: 2
Explain why, thermoplastics can be remolded but thermosetting cannot be
remolded
Thermosetting contain cross linking make it hard and can't be remolded
Item ID:
School:
Subject: :
Standard: 24-6
Level: G12 -A
State the main methods used to prepare polymers?
1- By addition
2- By condensation
Item Type: CR
Points:
DOK: 2