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2. A
3. B
Question1: Cu(s) + MgO (s) --> Mg(s) + CuO(s)
4. Ionic - C
5. A oxidization (reacts with oxygen)
6. D (water - 18)
7. D - memorize tetra/dino/mono
8. A
9. C
10. C
11. B
NR1. 3124
12. acid rain is a solution
polyatomic
Ca + ZnSO4 --> Zn + CaSO4
- know that SO4 is a polyatomic and two metals switch
- Also SO4 is sulfate
13.C (brittle - non metal but conducts electricity - metal)
14. A
15. B
NR2. 4123
16. C
17. B
18. A
19. Transistor - switch (transistor in microcircuit is in switch)
microcircuit - transistor (resists - controls)
normal circuit is (more current, more resistance) than microcircuit
20. A
21. B
tungsten is a good insulator / resistor
22. C
R = V/I
23. D
24. B
25. D
26. C
27. A
28. D
29. B
output / input X 100% = efficiency
30. earth is blocking the sun so we can't see the moon --> lunar eclipse C
31. B
Polaris (North)
you move west from europe to north america. polaris is on your right side
32. Earth orbit - communication (telephone/gps)
- need multiple to keep the signal
geosynchronous - tv/radio
geosynchronous - best for communication
33. D
34. to measure the distance to the planet(within our solar system) - i should use AU
light years - distance light takes to travel in a year
au - distance from earth to sun (in our solar system)
35. A
36. radio telescope - pick up the radio waves (used for communication)
advantage of optical telescope - provide clear image of object
interferometry - clear image/ can see farther
(can hook up both of optical and radio telescope)
NR3. Astrolabe refracting telescope reflecting telescope Hubble space telescope
links: questaplus
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