Sunday, February 12, 2012
Study Guide 1-3 Advanced (D)
Was having some Youtube issues so I am posting the answers. You can see the pictures in class tomorrow.
1. MnO2 2. trigonal bipyramidal, 90/120, sp3d, and nonpolar 3. show in class
4. trigonal pyramidal, 107.3, sp3, polar 5. silver chromate 6. show in class
7. sulfur dioxide 8. show in class 9. show in class
10. trigonal bipyramidal, 90/120, sp3d, polar 11. Copper (II) oxide 12 Diarsenic trioxide
13. octahedral, 90, sp3d2, nonpolar 14. Fe2(S2O3)3 15. Selenium Trioxide 16. Show in class 17. Niobium (III)Phoshpide 18. Mg(OH)2 19. Show in class 20. trigonal planar, 120, sp2, nonpolar 21. show in class 22. C 23. d 24. b 25. d 26. d 27. b 28. c 29. a 30. c 31. b
1. MnO2 2. trigonal bipyramidal, 90/120, sp3d, and nonpolar 3. show in class
4. trigonal pyramidal, 107.3, sp3, polar 5. silver chromate 6. show in class
7. sulfur dioxide 8. show in class 9. show in class
10. trigonal bipyramidal, 90/120, sp3d, polar 11. Copper (II) oxide 12 Diarsenic trioxide
13. octahedral, 90, sp3d2, nonpolar 14. Fe2(S2O3)3 15. Selenium Trioxide 16. Show in class 17. Niobium (III)Phoshpide 18. Mg(OH)2 19. Show in class 20. trigonal planar, 120, sp2, nonpolar 21. show in class 22. C 23. d 24. b 25. d 26. d 27. b 28. c 29. a 30. c 31. b
Study Guide 2-3 (C)
Was having some YouTube issues so I am posting the answers and will make sure you can see the pictures in class.
1. Iron (II) Phosphate 2. Will show in class 3. Carbon Tetrachloride 4. Sodium Bromide
5. Show pic in class Li+ O2- Chemical formula:Li2O 6. Pic in class bent, 104.5, sp3, polar
7. CF2 8. show in class 9. tetrasulfur tetranitride 10. MnO2 11. Show in class 12. pic in class, Al +3 S-2 chemical formula: Al2S3 13. pic in class, K+ Cl- Chemical formula :KCl 14. carbon monoxide
15. Potassium Hydroxide 16. BaCl2 17. pic in class, trigonal bipyramidal, 90/120, sp3d, polar
18. linear, 180, sp, nonpolar
19. D 20. D. 21. A 22. D 23. A 24. C 25. B 26. C 27. B 28. B
1. Iron (II) Phosphate 2. Will show in class 3. Carbon Tetrachloride 4. Sodium Bromide
5. Show pic in class Li+ O2- Chemical formula:Li2O 6. Pic in class bent, 104.5, sp3, polar
7. CF2 8. show in class 9. tetrasulfur tetranitride 10. MnO2 11. Show in class 12. pic in class, Al +3 S-2 chemical formula: Al2S3 13. pic in class, K+ Cl- Chemical formula :KCl 14. carbon monoxide
15. Potassium Hydroxide 16. BaCl2 17. pic in class, trigonal bipyramidal, 90/120, sp3d, polar
18. linear, 180, sp, nonpolar
19. D 20. D. 21. A 22. D 23. A 24. C 25. B 26. C 27. B 28. B
Thursday, February 9, 2012
Magnesium Lab
Materials Needed:
1. Crucible
2. Safety glasses
3. Bunsen burner
4. Distilled water
5. Tongs
6. Crucible Holder
7. Magnesium strips
8. Batteries
9. Cables for testing
Procedure:
1. Put your safety glasses on your face
2. Mass the crucible
3. Take two of the strips of magnesium and twist into a ball
4. Turn on the Bunsen burner
5. Place the crucible with lid and magnesium inside the crucible on the triangle about seven centimeters above the flame.
6. Wait for the magnesium to be heated/ on fire, (do not look directly into the crucible)
7. Mass crucible after it cools down
8. Put distilled water in the crucible and stir
9. Connect the batteries and cables to see if the water conducts the electricity
Analyze and Conclude
1. The magnesium weighted .1 an did not gain or lose any.
2. Exothermic reaction, because the mass should of increased.
3. Chemical reaction, because of the air.
4. Nitrate & nitrate
5. Oxygen & Magnesium
6. It did conduct electricity.
1. Magnesium ions help the nervous system
2. Magnesium is used in antacids
1. Crucible
2. Safety glasses
3. Bunsen burner
4. Distilled water
5. Tongs
6. Crucible Holder
7. Magnesium strips
8. Batteries
9. Cables for testing
Procedure:
1. Put your safety glasses on your face
2. Mass the crucible
3. Take two of the strips of magnesium and twist into a ball
4. Turn on the Bunsen burner
5. Place the crucible with lid and magnesium inside the crucible on the triangle about seven centimeters above the flame.
6. Wait for the magnesium to be heated/ on fire, (do not look directly into the crucible)
7. Mass crucible after it cools down
8. Put distilled water in the crucible and stir
9. Connect the batteries and cables to see if the water conducts the electricity
Analyze and Conclude
1. The magnesium weighted .1 an did not gain or lose any.
2. Exothermic reaction, because the mass should of increased.
3. Chemical reaction, because of the air.
4. Nitrate & nitrate
5. Oxygen & Magnesium
6. It did conduct electricity.
1. Magnesium ions help the nervous system
2. Magnesium is used in antacids
Thursday, February 2, 2012
Items needed:
1.)Crucible
2.)Bunsen Burner
3.)2 Strips of Magnesium(.11 grams)
4.)Safety Goggles
5.)Tongs
6.)Batteries/cables
7.)Distilled Water
Procedure:
First, you weigh the crucible without the magnesium in it, our crucible weighed 22.03 grams without the lid on, then put crucible back on the scale. then zero the balance. then put your two strips of magnesium in, this will show how much the magnesium weighs. My magnesium weighed .11 grams. Then place the crucible with the magnesium on the Bunsen burner. Wait a couple minutes, if you don't see a flash, then your magnesium hasn't lit yet. To speed up the process, take the lid off of the crucible. Once this is done, wait a couple more minutes. If it still hasn't lit, take the tongs and pick the magnesium and put it directly into the top part of the flame. In about ten seconds it will light and flash white. Do not look at the flashing as it is harmful to your eyes. In the corner of your eye, lift the magnesium up, and drop it in the crucible. Turn the Bunsen burner off, because the magnesium burns hot enough, and the heat from the flame can ruin the crucible. Wait for your magnesium to stop burning then Once this is done, let the magnesium cool down, then take the crucible off the Bunsen burner. Next, you need to put distilled water in the crucible, and stir it. Then take 2 wires, and a battery, and hold the wires to the battery and hold the ends in the water, if the light bulb on the wires lights up, it is conductive. If the light bulb doesn't light, it's not conductive. In our case, it wasn't conductive
1.)Crucible
2.)Bunsen Burner
3.)2 Strips of Magnesium(.11 grams)
4.)Safety Goggles
5.)Tongs
6.)Batteries/cables
7.)Distilled Water
Procedure:
First, you weigh the crucible without the magnesium in it, our crucible weighed 22.03 grams without the lid on, then put crucible back on the scale. then zero the balance. then put your two strips of magnesium in, this will show how much the magnesium weighs. My magnesium weighed .11 grams. Then place the crucible with the magnesium on the Bunsen burner. Wait a couple minutes, if you don't see a flash, then your magnesium hasn't lit yet. To speed up the process, take the lid off of the crucible. Once this is done, wait a couple more minutes. If it still hasn't lit, take the tongs and pick the magnesium and put it directly into the top part of the flame. In about ten seconds it will light and flash white. Do not look at the flashing as it is harmful to your eyes. In the corner of your eye, lift the magnesium up, and drop it in the crucible. Turn the Bunsen burner off, because the magnesium burns hot enough, and the heat from the flame can ruin the crucible. Wait for your magnesium to stop burning then Once this is done, let the magnesium cool down, then take the crucible off the Bunsen burner. Next, you need to put distilled water in the crucible, and stir it. Then take 2 wires, and a battery, and hold the wires to the battery and hold the ends in the water, if the light bulb on the wires lights up, it is conductive. If the light bulb doesn't light, it's not conductive. In our case, it wasn't conductive
Subscribe to:
Posts (Atom)