Theoretical Competition, 5th IJSO, Gyeongnam, Korea, December 11, 2008
T-1
5th INTERNATIONAL JUNIOR SCIENCE OLYMPIAD
THEORETICAL COMPETITION
December 11, 2008
Theoretical Competition, 5th IJSO, Gyeongnam, Korea, December 11, 2008
T-2
1. 3
2. 3
3.
4.
5.
6.
7.
1.
2.
3.
4.
5.
6.
7.
8.
9.
Theoretical Competition, 5th IJSO, Gyeongnam, Korea, December 11, 2008
T-3
I
1643 Torricelli 1
76 cm
Torricellian 1 atm () 760 mmHg
760 Torr
13.6 g 9.8 m/s2
I-1) kg m s (0.3 )
I-2) 1 atm (0.5 )
I-3) 1 atm SI (0.5 )
()
120 mmHg () 80 mmHg ()
Theoretical Competition, 5th IJSO, Gyeongnam, Korea, December 11, 2008
T-4
I-4) (/)
(1. 2. 3.
42 cm 4. ) (1.2 )
I-5) () 1.2 cm
32 25 cm/s
(
0.2 cm) (1.0 )
Poiseuille
V/t P r4
r
I-6) 10.0%
(1.0 )
Theoretical Competition, 5th IJSO, Gyeongnam, Korea, December 11, 2008
T-5
I-7) (A) (E) 1 5
( 0.2 )
( A )
( B )
( C )
( D )
( E )
1
2
3
4
5
Theoretical Competition, 5th IJSO, Gyeongnam, Korea, December 11, 2008
T-6
Kirchhoff
Kirchhoff
1.
2. .
Kirchhoff
Wheatstone
(G)
I-8) A B () (0.5 )
I-9) Rx (0.5 )
Rx 6 0.2 A. A B
I-10) A B (0.5 )
I-11) (1.5 )
I-12) A B (1.5 )
Theoretical Competition, 5th IJSO, Gyeongnam, Korea, December 11, 2008
T-7
II
(LPG)LPG
(LNG)
(O2)
(
)
(kg/L) (kJ/kg)
C8H18 0.70 44000
C3H8 0.50 46000 LPG()
C4H10 0.57 46000
LNG() CH4 0.42 54000
II-1) 100 km
1 L
13.0 L/100 kmLPG 1 L
LPGLPGLPG
(2.5)
II-2) LNG 1 mL LNG 25 1atm
LNG LNG (1.0 )
II-3) LPG LPG
32 LPG 25 1
(1.5 )
Theoretical Competition, 5th IJSO, Gyeongnam, Korea, December 11, 2008
T-8
II-4) (CO2)
(1 )
II-5) CO2
1 kJ CO2
(2.5 )
II-6)
1.0
1.0 L 1 m2
1000 W 20 %
(1.5 )
H = 1, C = 12, N = 14, O = 16 amu
R = 0.082 L atm mol-1 K-1 = 8.3 J mol-1 K-1
25 C () and (1 atm) 24.5 L/mol (24.5 dm3/mol)
Theoretical Competition, 5th IJSO, Gyeongnam, Korea, December 11, 2008
T-9
III
24
1940
()()
(Nicotiana tabacum)
(Hyoscyamus niger)
14
10
Theoretical Competition, 5th IJSO, Gyeongnam, Korea, December 11, 2008
T-
10
III-1~3. (1)
1
III-1) 1
III-2)
III-3)
Theoretical Competition, 5th IJSO, Gyeongnam, Korea, December 11, 2008
T-
11
III-4~5. (1)
Pr( 660 nm)
Pfr(730 nm)
2
(R)
Pr Pfr
(F)
2a
(R)(F)
2c
III-4) (R)(F) 2c
R-F-R R 2d III-5) R-F-R 2d
Theoretical Competition, 5th IJSO, Gyeongnam, Korea, December 11, 2008
T-
12
III-6, 7 Pr Pfr (1)
PfrPr
PrPfr
(III-6 )
(III-7 )
III-8~9 (1.5)
3
3.
Theoretical Competition, 5th IJSO, Gyeongnam, Korea, December 11, 2008
T-
13
III-8)
III-9)
Experimental Examination, 5th IJSO, Gyeongnam, Korea, December 13, 2008
E-1
5th INTERNATIONAL JUNIOR
SCIENCE OLYMPIAD
EXPERIMENTAL EXAMINATION
December 13, 2008
Experimental Examination, 5th IJSO, Gyeongnam, Korea, December 13, 2008
E-2
1.
2. .
3. .
4. .
5.
6. 3 30 30 5
0
7. 3 4 ( I II III)( 1 1 )
8.
9.
10.
11.
12.
Experimental Examination, 5th IJSO, Gyeongnam, Korea, December 13, 2008
E-3
1.
2.
3.
4.
5.
6.
7.
8.
9.
Experimental Examination, 5th IJSO, Gyeongnam, Korea, December 13, 2008
E-4
A.
calamari
1082
Experimental Examination, 5th IJSO, Gyeongnam, Korea, December 13, 2008
E-5
()
1mm
B. ()
I.
II.
III.
C. ()
( 2)
( 1)
1
30cm ( 1)
( 1)
( 1)
( 1)
Experimental Examination, 5th IJSO, Gyeongnam, Korea, December 13, 2008
E-6
I
(..)
(2 )
II
#1~#62mL
125 mL
1300 mL
1500 mL
2
1(2.0 x 40 cm)
2TLC(5.0 x 10 cm) ()
1
1
20 mL (99.9 %)
50 mL
1
1
III
()() () ()
D.
Experimental Examination, 5th IJSO, Gyeongnam, Korea, December 13, 2008
E-7
I
1. 2. 3. 4.
1. 2. () 3.
(
)
4. 5. 6. 7.
I-1) I (2) I-2) I-2(0.5) () I-3) I
(0.5)
Experimental Examination, 5th IJSO, Gyeongnam, Korea, December 13, 2008
E-8
II
SepiaSepia
()(
)
(Rf)Rf
RD1/D2
D1 =
D2 =
Experimental Examination, 5th IJSO, Gyeongnam, Korea, December 13, 2008
E-9
II-1
#1 #2
1. 10 cm
2.
3.
4. 500 mL ()
5. 500 mL
6.
7.
8.
Experimental Examination, 5th IJSO, Gyeongnam, Korea, December 13, 2008
E-
10
II-1 (1.5)
(A) #1
(B) #2
(C) #1 #2
(D)
II-2 (1.5)
(A) #1
(B) #2
(C) #1 #2
(D)
II-3 #2 (1)
(A) (B) (C) (D)
(E) (F) (G)
II-2
(TLC)
5.0 x 10 cm TLC()
1. TLC
TLC( #1 - #4)TLC
( #5 - #6)
2. 300 mL (
)
Experimental Examination, 5th IJSO, Gyeongnam, Korea, December 13, 2008
E-
11
3.
TLC
4.
5. TLC
II-4. TLC #1 - #6(0.5)
II-5 #1 TLC #1
Rf(2.5)
(A) (B) (C) (D)
(E) (F) (G)
II-6 TLC
Rf(2.5)
(A) (B) (C) (D)
(E) (F) (G)
Experimental Examination, 5th IJSO, Gyeongnam, Korea, December 13, 2008
E-
12
II-7 Rf
()TLCRf
(A) TLC()
(B) TLC()
(C) TLC()
(D) TLC()
6. TLC TLC
Experimental Examination, 5th IJSO, Gyeongnam, Korea, December 13, 2008
E-
13
III
( i-o )
1) 2) () 3) 4) 5) 6)
1-5 a. (o) b. o (1/o) c. (i) d. i (1/i) e. (y0) f. (yi) g. (M=yi /yo)
7) III-1) (6)5(
) (6.0 ) 8) III-2) 1 (o) (i) (1.0 )
III-3) 1/i 1/o (3.0) (the line of best fit) (0.5)
III-4) 1/i (1.0 ) III-5) (0.5)
Experimental Examination, 5th IJSO, Gyeongnam, Korea, December 13, 2008
E-
14
25cm 25cm
III-6)
(0.5) III-7) (0.5)
Test Competition, 5th IJSO, Gyeongnam, Korea, December 9, 2008
M-1
5th INTERNATIONAL JUNIOR
SCIENCE OLYMPIAD
TEST COMPETITION
December 9, 2008
Test Competition, 5th IJSO, Gyeongnam, Korea, December 9, 2008
M-2
2008 12 9
1. 3
2. 30
3.
4.
5.
1 A B C D
6.
1 A B C D A D
7.
8.
+1.0
-0.25
0.0
Test Competition, 5th IJSO, Gyeongnam, Korea, December 9, 2008
M-3
1.
2.
3.
4. ()
5.
6.
7.
8.
9. ()
Test Competition, 5th IJSO, Gyeongnam, Korea, December 9, 2008
M-4
1. 2.7 g/cm3 1.0 g/cm3
200 N 220 N
()
(A) 0.83 (B) 0.91 (C) 1.10 D) 1.17
2.
(A)
(B)
(C)
(D) 3. () A C ?
(A) A C
(B) A C
(C) A C
(D) A C
Test Competition, 5th IJSO, Gyeongnam, Korea, December 9, 2008
M-5
4. 0
90
(A) (B)
(C) (D)
5. 500 kg A 100 km/h 1000 kg
B 50 km/h
A B
( A : B) ( A : B)
(A) 1:1 2:1
(B) 2:1 2:1
(C) 2:1 4:1
(D) 4:1 4:1
Test Competition, 5th IJSO, Gyeongnam, Korea, December 9, 2008
M-6
6.
(A)
(B)
(C)
(D) 7. ISS ()
() ISS
(A)
(B)
(C)
(D) 8. 5 km 2
(A) 10 km (B) 14 km (C) 17 km (D) 20 km
9.
-
a.
b.
c.
d.
(A) a (B) a, b (C) a, b, c (D) a, b, c, d
Test Competition, 5th IJSO, Gyeongnam, Korea, December 9, 2008
M-7
10. Eratosthenes Alexandria
Syene Alexandria 7.2
Syene 0
b.
c.
a.
(A) a b (B) a c (C) b c (D)
11. Fe2O3 10000 / Fe Fe O
55.85 16.001 96500 ()
(A) 6 x 102 (A)
(B) 6 x 103 (A)
(C) 6 x 104 (A)
(D) 6 x 105 (A)
12. X
(A) (B) (C) (D)
13. CO2
(1 =1.01325 x 105 Pa, 1 = 1.01325 bar)
Test Competition, 5th IJSO, Gyeongnam, Korea, December 9, 2008
M-8
(A) X CO2
(B) C CO2
(C) CO2
(D) (25C) CO2
14. (NH3) N2 H2 17.0 mL
(mL = )
N2 H2
(A) 8.50 mL 25.5 mL
(B) 17.0 mL 34.0 mL
(C) 25.5 mL 51.0 mL
(D) 17.0 mL 51.0 mL
15. (IE1) IE1
(A) B ( 1s22s22p1 ) (B) C ( 1s22s22p2 ) (C) N ( 1s22s22p3 ) (D) O ( 1s22s22p4 )
Test Competition, 5th IJSO, Gyeongnam, Korea, December 9, 2008
M-9
16. (CaCO3, 100)(HCl)(CaCl2)
(CO2)(H2O) 1 25C 20 g CaCO3 20 mL HCl
CO2
(A) 4500 mL (B) 450 mL (C) 10 mL (D) 5.0 mL
17. HA (Ka)
HA + H2O A- + H3O+
Ka = [A-][ H3O+]/[HA]
pH
pH = log10[ H3O+] Ka pH Ka pH
- log10Ka = pH - log10{[A-]/[HA]}
(NaOH )
pH HA Ka
(A) 10-4.2 (B) 10-4.5 (C) 10-7.8 (D) 10-11.5
Test Competition, 5th IJSO, Gyeongnam, Korea, December 9, 2008
M-10
18.
10C ( A ) 20C (B )
(A)
(B) (B A ) 293283.
(C) 21. (D) A B
19.
A
(A) 20 % (B) 25 % (C) 50 % (D) 100 %
20.
(A) Na+ (B) Mg2+ (C) F - (D) O2-
Test Competition, 5th IJSO, Gyeongnam, Korea, December 9, 2008
M-11
21. ()
I. II.
I()II()
(A) a, d (B) a, e (C) b, e (D) c, d
22.
Tt
a b
c
Test Competition, 5th IJSO, Gyeongnam, Korea, December 9, 2008
M-12
(A) II-1 1/2
(B) II-5 Tt TT
(C) 4
(D) II-4 II-5 2 1/8
23. DNA
DNA
( DNA
)
(A) (B)
(C) (D)
Test Competition, 5th IJSO, Gyeongnam, Korea, December 9, 2008
M-13
24. ABO
A W
AB
O X
O
AB Y
O
A Z
O
(A) W B
(B) W AB
(C) Y A
(D) Y AB
25.
Test Competition, 5th IJSO, Gyeongnam, Korea, December 9, 2008
M-14
(a)
(b)
(c)
(d)
(e)
(A) a, e (B) b, d (C) a, c, d (D) b, c, e
26. 2 ( I) 21 (
II) 10, 15, 20, 30
() ()
(A) 2 30
(B) 2 21
(C) 21 15
(D) 21 21
Test Competition, 5th IJSO, Gyeongnam, Korea, December 9, 2008
M-15
27.
(A)
(B)
(C)
(D)
28. /
()
(A)
(B)
(C)
(D) *
()
Test Competition, 5th IJSO, Gyeongnam, Korea, December 9, 2008
M-16
29.
35S- 30
5 30 120 (a, b
c)
(A) a b c (B) a c b (C) b a c (D) b c a
30.
(A)
(B)
(C)
(D)
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