Sunday, January 29, 2006
Wednesday, January 25, 2006
MULTIPLE CHOICE
1. B
2. D
3. D
4. D
5. C
6. D
7. B
8. A
9. B
10. A
11. B
12. A
13. B
14. B
15. D
16. D
17. C
18. D
19. C
20. B
21. B
22. A
23. B
24. C
25. D
26. C
27. B
28. B
29. A
30. C
31. B
32. A
33. B
34. A
35. A
36. A
37. C
38. B
39. C
40. B
41. A
42. B
43. B
44. C
45. C
46. C
47. C
48. C
49. B
50. C
51. C
52. A
53. B
54. B
55. A
SHORT ANSWER
56. Precision is how close a set of measurements of the same quantity are. Accuracy is how close a measurement is to the true value.
57. Isotopes are atoms of the same element with different numbers of neutrons and therefore different mass numbers.
58. A mole is a collection of atoms that is large enough to measure in the laboratory. A single atom is too small.
59. cheers
Monday, January 23, 2006
1st period Elements - Neon
http://www.surveymonkey.com/s.asp?u=625711697776
3rd period Elements - Neon
http://www.surveymonkey.com/s.asp?u=463361702234
1st period Fireworks
http://www.surveymonkey.com/s.asp?u=417941697777
3rd period Fireworks
http://www.surveymonkey.com/s.asp?u=108881702233
-----------------------------------------------------------------------------------------------------------
Elements: Neon Webquest Materials
Your job in this WebQuest is to explore the chemistry behind neon signs, and learn how the different colors of these signs are made. You will discover exactly how the noble gases are inserted into glass tubing, and how the gases are made to glow. You will also learn how different colors of neon signs are created. You will find out how neon glass tubing can be bent and how neon artists create their works of art. Then you will answer a set of questions about neon signs.
- WebElements – The Periodic Table on the WWW.
Visit this site for information on the noble gases. You can click on any element in this periodic table to read about that element and its properties. Click on any of the noble gases to find out about that element.
- Krypton Neon – Everything you ever wanted to know about Neon.
Go to this site to find the answers to questions you might have about neon and neon lights. This site is intended more for neon artists than chemistry students.
- Neon Knights: Part 1: An Exploration of Neon.
At this site you can find out about the discovery of neon and how neon signs operate. Scroll down and click on how are artists using neon to learn more about neon as art.
- Neon Colors.
Visit this site to see many of the possible colors found in neon signs. Notice that colors listed are made with just three elements.
- Just Neon’s FAQ Page.
Go to this site to find out more about neon signs. You can learn exactly how a noble gas is introduced and held inside a glass tube at this site.
- Neon: A Brief History of Signs.
At this site you can find a history of neon’s discovery and its use in neon signs. You can find out here how the glass tubing used in neon signs is made.
- The History of Neon Signs.
Visit this site to learn about the inventor of the first neon lamp. You can find out how neon signs are made here, and about what colors are produced by using the elements argon and mercury.
- Ray Kolty’s Neon FAQ.
Go to this site for more information about how neon tubes light up, how neon tubes are made, and how the colors of neon tubes are created.
- Museum of Neon Art.
At this site you can see how artists are using neon tubing in artworks. Scroll down and click on web gallery to see some neon art pieces presently on exhibit at this museum.
- Neon Artworks.
Visit this site to see all kinds of uses for neon signs as art. Click on free standing sculptures to see some wonderful examples of neon art.
- GlassLight Gallery.
Go to this site to see neon art and neon sculpture. Scroll down and click on views of the luminous sculpture. On the menu at the left side of the screen, click on jellyfish to see an amazing array of neon sculptures.
Chemistry Fireworks Links
Your job in this WebQuest is to discover the component parts of fireworks, and to identify the chemical compounds that are responsible for the brilliant colors that light up the sky as fireworks explode. You will explore the history of fireworks and find out when the first fireworks were invented. You will learn about firework design and how fireworks are built. You will also find out what chemical compounds are responsible for the colors seen in fireworks. Finally, you will answer a set of questions about fireworks to demonstrate what you have learned about the chemistry of fireworks.
Look at the web sites given here to find the information that will enable you to answer questions about the chemistry of fireworks.
- A History of Fireworks. At this site, you can learn about the history of fireworks.
Where did fireworks begin?
- Professional Colors. Visit this site to learn how professionals create the colors that appear during the vibrant displays of fireworks.
- Lights and Colours. Go to this site to see what chemicals create the colors of firesworks. Before the 19th century, only the colors white, yellow, and orange were possible in fireworks. When did the colors red, green, blue, and purple become possible in fireworks?
- How Fireworks are Made. At this site you can find out what chemical compounds create the colors of modern fireworks.
- NOVA Online: Kaboom! Go to this site for a diagram of the parts of a modern firework. Each part of the diagram has an active label. Click on each label to learn more about that part of the firework.
- The Chemistry of Fireworks. Visit this site to learn more about the chemical reactions in fireworks. Find out what two types of binders are used in fireworks today.
Sunday, January 22, 2006
Thursday, January 19, 2006
-Good luck as you study for Friday's Residency!
Chem Intro Study Guide
Answer Section
MULTIPLE CHOICE
1. C
2. A
3. B
4. D
5. C
6. B
7. C
8. A
9. D
10. B
11. A
12. D
13. A
14. D
15. B
16. D
17. D
18. B
19. B
20. D
21. C
22. D
23. A
24. B
25. D
26. B
27. C
MATCHING
28. D
29. F
30. I
31. A
32. K
33. B
34. J
35. E
36. G
37. C
38. H
Monday, January 16, 2006
Tuesday, January 10, 2006
Welcome to the world of Chemistry. I look forward to a stellar semester with you. Please check back here for Extra Credit, WebQuests, practice residency questions, and powerpoint tidbits.
Cheers,
J. Gibney