PROBLEM SHEET
NO. PROBLEM:
SUBJECT: CHEMISTRY
CLASS / SEMESTER: X / 2
BASIC MATERIALS: CARBON ATOM PECULIARITIES
TIME: 90
PROBLEM WORKING INSTRUCTIONS:
1. Write your name, class, number absent and the number of pieces of matter
2. Check the question paper before working on the
3. Amounted to about 20 which consists of 15 multiple choice questions and 5 essay questions
4. Put a cross (x) for multiple choice questions
5. Check your answers before questions were collected
A. MULTIPLE CHOICE
Put a cross (x) in accordance with the correct answer!
1. 12C6 electron configuration is ...
a. (2 2) c. (2 6) e. (2 8 2)
b. (2 4) d. (2 8)
2. Many covalent bonds can be formed atom C is ...
a. 5 c. 3 e. 1
b. 4 d. 2
3. In the periodic system of elements, period and group is the element 12C6 ...
Class Period
a. 2 IIA
b. 2 IVA
c. 3 IIA
d. 3 IVA
e. 4 IVA
4. Known elements of group IVA is C, Si, Ge, Sn and Pb. Elements that have the smallest radius is ...
a. C c. Ge e. Pb
b. Si d. Sn
5. No hydrocarbons are saturated and unsaturated. The definition of unsaturated bonds in the bonds between the carbon is ...
a. Single bond d. Single bond, double 2 and 3
b. Single and double bonds 2 e. 2 or 3 double bonds
c. Single and double bonds 3
6. Reason C atoms can form long molecules are ...
a. Atom C is widely available in nature d. C atom is stable
b. C atoms can bind to the C atom to another e. Atom C reactive
c. C atom lies in period 2 and group IVA
7. Note the following structural formula compound.
8CH3
NO. PROBLEM:
SUBJECT: CHEMISTRY
CLASS / SEMESTER: X / 2
BASIC MATERIALS: CARBON ATOM PECULIARITIES
TIME: 90
PROBLEM WORKING INSTRUCTIONS:
1. Write your name, class, number absent and the number of pieces of matter
2. Check the question paper before working on the
3. Amounted to about 20 which consists of 15 multiple choice questions and 5 essay questions
4. Put a cross (x) for multiple choice questions
5. Check your answers before questions were collected
A. MULTIPLE CHOICE
Put a cross (x) in accordance with the correct answer!
1. 12C6 electron configuration is ...
a. (2 2) c. (2 6) e. (2 8 2)
b. (2 4) d. (2 8)
2. Many covalent bonds can be formed atom C is ...
a. 5 c. 3 e. 1
b. 4 d. 2
3. In the periodic system of elements, period and group is the element 12C6 ...
Class Period
a. 2 IIA
b. 2 IVA
c. 3 IIA
d. 3 IVA
e. 4 IVA
4. Known elements of group IVA is C, Si, Ge, Sn and Pb. Elements that have the smallest radius is ...
a. C c. Ge e. Pb
b. Si d. Sn
5. No hydrocarbons are saturated and unsaturated. The definition of unsaturated bonds in the bonds between the carbon is ...
a. Single bond d. Single bond, double 2 and 3
b. Single and double bonds 2 e. 2 or 3 double bonds
c. Single and double bonds 3
6. Reason C atoms can form long molecules are ...
a. Atom C is widely available in nature d. C atom is stable
b. C atoms can bind to the C atom to another e. Atom C reactive
c. C atom lies in period 2 and group IVA
7. Note the following structural formula compound.
8CH3
1CH3 – 2CH
– 3C – 4CH2 – 5CH3
6CH3 7CH3
Which is the C atom of primary,
secondary and tertiary respectively ...
a. 1,2,3 c. 1,4,2 e. 2,3,4
b. 1,3,4 d. 3,4,5
8. Number of C atoms in the following compounds is secondary ...
CH3 - CH2 - CH - CH - CH2 - CH3
CH3 CH3
a. 1 c. 3 e. 5
b. 2 d. 4
9. Note the compound of structural formula below.
H CH3 CH3
a. 1,2,3 c. 1,4,2 e. 2,3,4
b. 1,3,4 d. 3,4,5
8. Number of C atoms in the following compounds is secondary ...
CH3 - CH2 - CH - CH - CH2 - CH3
CH3 CH3
a. 1 c. 3 e. 5
b. 2 d. 4
9. Note the compound of structural formula below.
H CH3 CH3
1CH3 – 2C
– 3C – 4C – 5CH3
CH3 H
CH3
Quaternary C atoms present in numbers ...
a. 1 c. 3 e. 5
b. 2 d.4
10. True statement about organic compounds is ...
a. There are bound ions and there are covalent
b. Not resistant to heating
c. Resistant to heating
d. Boiling point and high melting point
e. Generally soluble in water
11. How the structural formula of C3H4 triple bond following ...
a. H - C ≡ C - CH3 d. C ≡ C - CH 4
b. CH2 - CH ≡ CH e. C ≡ CH2 - CH2
c. C ≡ CH2 - CH2
12. Organic sample is heated to produce gas that can roil the lime water. This information indicates that the organic samples mngandung elements ...
a. Hydrogen d. Sulfur
b. Oxygen e. Nitrogen
c. Carbon
13. Gas generated from the combustion of organic samples when tested with paper cobalt cobalt paper will change from blue to pink. This means that the organic sample contains elements ...
a. Hydrogen c. Carbon e. Nitrogen
b. Oxygen d. Sulfur
14. Written a statement as follows:
1) Having a 6 valence electrons and form a covalent bond with hydrogen atoms
2) Have the ability to form four strong covalent bonds
3) Inter similar atoms can not form double covalent bonds
4) Can be bonded with similar atoms to form long-chain compounds
Statements that are characteristic of carbon atoms is ...
a. 1 and 2 c. 2 and 3 e. 3 and 4
b. 1 and 3 d. 2 and 4
15. What caused the collapse of the theory of "vis vitalist" which states that organic compounds can only be created in the living body?
a. Kall Wilhelm who fail to distinguish organic and inorganic compounds
b. JJ Berzelius who successfully analyze that organic compounds containing the element carbon
c. JJ Berzelius who managed to synthesize urea from ammonium cyanate
d. F. Wohler who successfully analyze that organic compounds containing the element carbon
e. F. The Wohler synthesized urea from ammonium cyanate
B. Essay
1. Why carbon compounds known as organic compounds? Precise if the hydrocarbons in petroleum are classified as organic compounds? Explain your answer!
2. Explain sifst-carbon atom characteristic not shared by other atoms!
3. Describe a simple way to show the elements carbon, hydrogen and oxygen in organic samples!
4. How many atoms C primary, secondary, tertiary and quaternary in the following compounds:
CH3 CH3
a. CH3 - C - CH2 - CH - CH - CH2 - CH3
CH2 CH3
c. C ≡ CH2 - CH2
12. Organic sample is heated to produce gas that can roil the lime water. This information indicates that the organic samples mngandung elements ...
a. Hydrogen d. Sulfur
b. Oxygen e. Nitrogen
c. Carbon
13. Gas generated from the combustion of organic samples when tested with paper cobalt cobalt paper will change from blue to pink. This means that the organic sample contains elements ...
a. Hydrogen c. Carbon e. Nitrogen
b. Oxygen d. Sulfur
14. Written a statement as follows:
1) Having a 6 valence electrons and form a covalent bond with hydrogen atoms
2) Have the ability to form four strong covalent bonds
3) Inter similar atoms can not form double covalent bonds
4) Can be bonded with similar atoms to form long-chain compounds
Statements that are characteristic of carbon atoms is ...
a. 1 and 2 c. 2 and 3 e. 3 and 4
b. 1 and 3 d. 2 and 4
15. What caused the collapse of the theory of "vis vitalist" which states that organic compounds can only be created in the living body?
a. Kall Wilhelm who fail to distinguish organic and inorganic compounds
b. JJ Berzelius who successfully analyze that organic compounds containing the element carbon
c. JJ Berzelius who managed to synthesize urea from ammonium cyanate
d. F. Wohler who successfully analyze that organic compounds containing the element carbon
e. F. The Wohler synthesized urea from ammonium cyanate
B. Essay
1. Why carbon compounds known as organic compounds? Precise if the hydrocarbons in petroleum are classified as organic compounds? Explain your answer!
2. Explain sifst-carbon atom characteristic not shared by other atoms!
3. Describe a simple way to show the elements carbon, hydrogen and oxygen in organic samples!
4. How many atoms C primary, secondary, tertiary and quaternary in the following compounds:
CH3 CH3
a. CH3 - C - CH2 - CH - CH - CH2 - CH3
CH2 CH3
CH3
b. CH3 - CH - CH - CH2 - CH3
OH CH3
CH3
c. CH3 - C - CH - CH2 - NH2
CH3 OCH3
5. Draw the structural formula of the following compounds molecular ruus then specify the C atom of primary, secondary, tertiary and quaternary!
a. C4H10
b. C5H12O
c. C3H9N
b. CH3 - CH - CH - CH2 - CH3
OH CH3
CH3
c. CH3 - C - CH - CH2 - NH2
CH3 OCH3
5. Draw the structural formula of the following compounds molecular ruus then specify the C atom of primary, secondary, tertiary and quaternary!
a. C4H10
b. C5H12O
c. C3H9N
1.
ANSWER KEY
MULTIPLE CHOICE:
1. B 6. D 11. A
2. B 7. C 12. C
3. B 8. B 13. A
4. E 9. D 14. D
5. E 10. B 15. E
Essay
MULTIPLE CHOICE:
1. B 6. D 11. A
2. B 7. C 12. C
3. B 8. B 13. A
4. E 9. D 14. D
5. E 10. B 15. E
Essay
1. Senyawa karbon dikenal sebagai senyawa organik karena
semua senyawa organik mengandung karbon. Senyawa hidrokarbon dalam minyak bumi
tidak tepat jika digolongkan sebagai senyawa organik.
2. - Atom C mempunyai 4 ikatan kovalen sehingga
dapat berikatan dengan sesamanya
membentuk rantai atom karbon dan juga dapat berikatan dengan berbagai unsur
nonlogam.
-
Ikatan kovalen yang dibentuk
atom C relatif kuat.
-
Atom C dapat membentuk ikatan rangkap maupun
rangkap tiga.
3.
Dengan uji pembakaran.
Pembakaran sampel organik akan mengubah C menjadi CO2 dan H menjadi
H2O. Gas CO2 dapat dikenali karena mengeruhkan air kapur
dan H2O dapat dikenali dengan perubahan kertas kobalt dari biru
menjadi merah muda.
4.
a) C10 =
6 b) C10
= 3 c) C10
= 4
C20 = 3 C20
= 2 C20
= 1
C30 = 2 C30
= 1 C30
= -
C40 = 1 C40
= - C40
= 1
5.
a) H
H H H
H - C – C – C – C - H
H
H H H
C10 =
2
C20 = 2
C30 = -
C40 = -
b) H
H H H H
H – C – C – C – C – C – H
H
H H H
OH
C10 =
2
C20 = 3
C30 = -
C40 = -
c) H
H H H
H
– C – C – C – N – H
H H
H
C10 =
2
C20 = 2
C30 = -
C40 = -
