Name ______________________		GSC 120    
 3/07/05    
 Second Exam

I.	True or False (1 point each). Indicate whether the statement is (A) True or (B) False.

1. 	LPG is made of hydrocarbons in the C1 - C2 range.

2.	Esters give flowers and fruits their characteristic odor and taste.

3.	The pH of an acid is a lower number than the pH of a base.

4.	Acids taste bitter while bases taste sour.

5. 	Uranus and Neptune have close to the same diameters.

6.	Light takes one hour to travel from the Sun to the Earth.

7.	Terrestrial planets are denser than Jovian planets.

II.	Multiple Choice (1 point each). Indicate which is the best response.

8. 	The difference between a prokaryote and a eukaryote is __________.
A. prokaryotes are always larger
B. prokaryotes have a nucleus
C. eukaryotes have a nucleus
D. eukaryotes don't have a nuclear envelope

9. 	During photosynthesis; __________ inside a plant cell convert the sun's energy into sugars.
A. cell walls 		B. chloroplasts
C. central vacuoles	D. vesicles

10. 	Eukaryote means ________ in greek.
	A. good nut			B. no nut
	C. bad nut			D. peanut
	E. <All of the above.>

11.  What structure stores waste produced in the cell?
	a.  vacuole		b.  nucleus
	c.  lysosome		d.  pinocytic vesicle

12.  Cytoplasm is all the living material
	a.  that makes up a cell.
	b.  inside the cell membrane except the nucleus.
	c.  inside the nucleus.
	d.  inside the cell except the protein material.
13. 	An alkane with 4 carbon atoms would have how many hydrogen atoms in the molecule?
	a.  4	b.  6	c.  8	d.  10

14.	The bonds in C60 form ____ pentagons and ____ hexagons.
A. 10   12			B. 12  20
C. 20   12			D. 5   6
E. <None of the above>

15.	Methanol is similar in structure to methane with a(n) _______ replacing a(n) _______.
A. -OH    -H			B. -H    -OH
C. C=C   C-C			D. C-C   C=C
E. <None of the above>

16.	Ethene (ethylene) is similar to ethane in that it has the  ___________.
A. same number of carbon atoms
	B. same number of hydrogen atoms
C. same number of -OH’s
	D. same number of double bonds
E. <None of the above>

17. 	Which of the following is not true of graphite?
	a. 	composed of layers of carbon that slide over one another easily
	b. 	is a good lubricant
	c. 	is electrically conductive
	d. 	found in pencils
	e. 	<None of the above.>

18. 	Buckminsterfullerene is a form of carbon that ________.
	a. is unstable
	b. was discovered recently
	c. has found application in agriculture
	d. has a long twisted form as in a rope
	e. <None of the above.>

19.	Carbon can bond with ____________ neighboring atoms.
A. three or fewer		B. exactly four
C. four or fewer		D. usually four but sometimes five
E. <None of the above>

20. 	The chemical symbol for Potassium is _________.
	A. Ag	B. Au	C. Fe	D. K		E. Na

21. 	The chemical symbol for Gold is _________.
	A. Ag	B. Au	C. Fe	D. K		E. Na

22.	Lime (not the kind you put in your drink) has a pH in the _________ range.
A. 2 - 3		B. 5 - 6
C. 8 - 9		D. 11 - 12
E. <None of the above>
23. 	Which of the following is acidic?
A. Toothpaste			B. Baking soda
C. Vinegar			D. Lye
E. <None of the above.>

24. 	Which of the following is basic?
A. Lemon juice			B. Vinegar
C. Lye				D. Wine
E. <None of the above.>

25. 	A mixture has a pH of 3.0. The mixture is a __________.
	A. strong acid				B. weak acid
	C. weak base				D. strong base
	E. salt solution

26.	___________ law states that the difference between the orbital radii of adjacent planets doubles from planet to planet as we move outward from Venus.
A. Kepler’s first		B. Kepler’s second
C. Kepler’s third		D. The Titius-Bode
E. <None of the above>

27.	The eccentricity of a circle is _________.
A. zero		B. greater than zero
C. one		D. greater than one
E. <None of the above>

28.	The Earth’s radius is around _________.
A. 3000km			B. 6400km
C. 12,000km		D. 182,000km
E. 150,000,000km

29.	The correct order of the terrestrial planets is
A. Mercury-Mars-Earth-Venus
B. Venus-Mercury-Earth-Mars
C. Mercury-Venus-Earth-Mars
D. Mars-Mercury-Earth-Venus
E. Mercury-Venus-Mars-Earth

30.	Rings will form around a planet when _____________.
A. matter is present too close to a large planet to form a moon
B. shepherd moons are absent
C. a planet’s atmosphere erupts
D. the planet’s magnetic field is large
E. <None of the above.>

31. 	________ has active volcanoes and sulphuric acid rain.
A. Mercury	B. Venus	C. Mars		D. Jupiter
E. <None of the above.>

32. 	________ has monster dust storms in an atmosphere of carbon dioxide.
A. Mars		B. Mercury	C. Jupiter	D. Venus
E. <None of the above.>
33. 	The new planetoid has an orbital period T=10,500years. The average orbital distance rG should be ________. (Hint:  rG3/T2=1.00AU3/yr2 for the planets around the Sun. )
	A. 22AU		B. 440AU
	C. 480AU		D. Over 1,000,000AU
	E. <None of the above>

34.	The Moon’s orbit has an average period of ____ days.
A. 27.3		B. 28		C. 29.5		D. 30	E. 31

III.	Match the columns one-for-one (1 point each).

35.	Alkali metals				A. “salt maker”
36.	Transition metals			B. inert
37.	Halogens					C. copper, silver, and gold
38.	Noble gases				D. soft and shiny

The planet ________________ ________________.

39.	Earth			A. is the smallest of the inner planets
40.	Mars				B. is called the blue planet
41.	Mercury			C. has a very large volcano
42.	Venus			D. has a surface that can’t be seen