Wednesday, August 16, 2017

Chemistry Lab Safety Rules List

Safety Practices for Science Students

While working in the laboratory, students will have certain important responsibilities that do not apply to the other classrooms. You will be working with materials which, if handled carelessly or improperly, have the potential to cause serious injury and even death.

            A science laboratory can be a safe place to work, if one is alert, cautious, and follows directions with care. The following practices should be studied and used in the lab:

1. Follow written and verbal instructions carefully. One should give laboratory procedures all of one’s interest, attention, and effort.

2. Prepare for each laboratory activity by reading all instructions before coming to class and review them before beginning work. Follow all directions and make note of any modification in procedure given by the instructor.

3. Perform only those laboratory activities where instructions and permission have been given by the teacher.  If curious about other activities – ask the instructor.

4. Use only materials and equipment authorized by the instructor. Ask the instructor if not familiar with something and don’t know how to use it.

5. Check labels and instructions carefully and use in the proper manner.

6. Wear safety goggles whenever in the lab. A demonstration safety shield may also be needed. Regular eye glasses, while giving some protection, are inadequate when used alone for lab work.

7. Keep books, purses, and such items in other room. Take only lab manuals and maybe a calculator into the working area.

8. Student apparel should be appropriate for lab work. Long hanging necklaces, bulky jewelry, and excessive and bulky clothing should not be worn in the laboratory. Roll long sleeves up. Only closed shoes should be worn in the lab. Lab aprons should always be worn.

9. Confine long hair during lab and keep a hair tie in your drawer. 

10. Students should conduct themselves in an appropriate manner while in the lab. This means no “horseplay” and not disturbing fellow students, as this can be dangerous in the middle of an experiment. It also means one should walk, not run, while in the lab. And, above all, it means one should show respect for fellow students and teacher, as well as the lab materials and equipment being used.  Do not squirt the water bottles at each other!

11. Eating or drinking in the laboratory is not permitted.   No gum either.

12. Never taste anything or touch chemicals with bare hands unless specifically instructed .

13. Never smell any chemical or solution.  Never inhale when directly over containers.  Use a fume hood when necessary.

14. Never carry hot equipment/dangerous chemicals through students.

15. Report any accident to the teacher immediately no matter how minor.  This includes any burn, scratch, cut or contact with corrosive liquid on skin or clothing.  Let me know of any allergies that you have.  Also, report defective or broken equipment to the teacher.

16.  Wash hands thoroughly before leaving the lab.

17. Never add water to acids; acids should be slowly and carefully added to water.  In general, acid solutions should be done by the instructor unless students are told otherwise.  (AA - add acid)

18. In case of a skin or clothes burn from an acid or alkali (base), rinse or flush the affected area immediately with plenty of running tap water.  If the eye is involved, irrigate it without interruption for at least 15 minutes.  Report the incident to the instructor.

19.  Know the location of the emergency shower, eye and face wash fountain, fire blanket, fire extinguisher, closest fire alarm box, glass waste disposal containers, and exits.

20. Know the proper fire drill procedure and practice it.

21. Notify the teacher immediately if any smoke or fire is seen.  Then follow the teacher’s instructions.  

22. If a person’s hair or clothing catches fire, notify the teacher immediately and quickly use a fire blanket to surround the burning area.  This deprives the fire of oxygen and snuffs it out.  Then see that the victim is treated by the school nurse for shock and burns.

23. Every student should be instructed in the proper use of a fire extinguisher and know who is primarily responsible for its use. 

24. Gas burners should be used only as instructed by the teacher.

25. Use a burner with extreme caution.  Keep head and clothing away from the flame and turn it off when not in use.  Warning: alcohol burner flames are often impossible to see in well-lit rooms.

26. Do not throw matches into wastepaper baskets.  An approved metal waste container should be provided for their disposal.

27. Dispose of litmus paper, wooden splints, toothpicks, rags/paper towels (especially those with flammables on them), and all other combustibles in approved metal or other designated waste containers with lids.

28. Do not bring any substance into contact with heat or an open flame unless specifically instructed to do so.  Keep flammable materials like alcohol far away from an open flame.  Fumes from these can travel along counter tops and be ignited.

29. When heating test tubes, do not look down into the tube while heating it, and do not point it in the direction of oneself or any other person.

30. When bending glass, allow time for the glass to cool before further handling.  Hot and cold glass has the same visual appearance.  Determine if an object is hot by bringing the back of one’s hand close to it.  Use tongs and wire gauze pads.
31. To cut small-diameter glass tubing, use a file to make a deep scratch.  Wrap the tubing in a paper towel before bending the glass away from oneself with one’s thumbs facing each other at the scratch.  Fire polish ends.

32. Carefully twist (never push) glass tubing into stopper holes.  Lubricate stopper hole to ease insertion and always use towels for hand protection.

33. Remove all broken glass from work area or floor as soon as possible.  Never handle broken glass with bare hands.  Use a counter brush and dustpan.  Dispose of it in a separate waste container labeled “Broken Glass”.

34. Place all metals and solid wastes into designated waste containers.  Never discard solids into laboratory sinks.

35. Never climb to reach overhead storage.  Use a safety stool or lab ladder.  To minimize accidental breakage and chemical splash, do not use overhead storage for bottled chemicals.

36. When transporting chemical bottles, take care not to drop them or knock them into a lab bench, drawer, or door. 

37. When dispensing chemicals, use caution along with the proper techniques and equipment.  Do not put extra quantities back into original storage! This will cause contamination.  Instead, dispose of in the proper manner.

38. Avoid contamination.  Never pour reagents back into the bottle.  Do not use one pipette for more than one liquid/solution or lay them on the table. 

39. Do not pipette liquids by mouth.  Use a rubber suction bulb to draw the liquid up into the pipette.

40. Spills should be reported to the instructor as soon as they occur.  Immediate cleanup, using the proper neutralization and/or disposal procedures, is essential to prevent injuries and additional accidents.  Most spilled acids can be neutralized (made safe) with sodium bicarbonate (baking soda) solution.  Most spilled bases (alkalis) can be neutralized with dilute acetic acid (vinegar).

41. When removing an electrical plug from its socket, pull the plug, not the electrical cord.  Remember, one’s hands should be completely dry before touching an electrical switch, plug, or outlet to prevent electrocution.  To prevent electrical fires, inspect plugs and cords for broken insulation and never overload electrical outlets or circuits. 

42. Keep work areas clean.  Keep floors, aisles, and passageways clear of laboratory equipment, chemicals, boxes, and other clutter.  Each student should help in the cleanup after each lab session.  Every item should be properly stored.   Close any open drawers and cabinet doors to avoid injuries. 

43. Students are not permitted in laboratory storage rooms without approval.

44. Any individually planned experiment must be approved by the teacher.

45. Most of all, be alert and proceed with caution in the laboratory.

Week One Lesson Plans

Week One Lesson Plans

Chemistry I - Week of 8/17 – 8/18  - These half-days are centered on the student.  The ones I know and the especially the new ones.  I would like to know about their expectations of the course and get to know the new ones better through a questionairre.  We will also go through the obligatory paperwork concerning rules and behavior so that the student understands what I expect of them.  I prefer to work with my students and their parents as a team for a successful year.  These are early dismissal days 11:30.

1.  parent/guardian letter (blogger) and signature due Monday 8/21
2.  questionairre with 5 questions due by next Friday 8/25
3.  calculator with “log” button required

1.  information sheet due Monday 8/21
2.  grading policy handed out
3.  class rules and lab safety rules distributed - due next Friday 8/25
4.  LAB SAFETY PRE-TEST on Tuesday, August 22nd
5.  books assigned if time
6.  Getting to Know Your Book worksheet due Weds 8/23

Adv. Chemistry - Week of 8/17 – 8/18  – This week goes through paper work and lab safety rules.  Safety in the lab is a number one priority.  We will also begin reviewing where we left off last year with balancing chemical equations and writing and naming chemical formulae.

1.  questionairre with 5 questions due next Friday 8/25
2.  parent letter and blog due Monday 8/21
3.  information sheet due Monday 8/21
4.  LAB SAFETY POST-TEST on Tuesday, August 22nd

1.  classroom rules due Monday 8/21
2.  lab safety rules handed out for post-test - review and hand back in on Tuesday
3.  Lab safety test Tuesday 8/22
4.  hand out ion sheet and periodic table
5.  balancing review due Weds 8/23
6.  balancing quiz Thursday 8/24

AP Chemistry - Week of 8/17 – 8/18  -  The next few weeks are focused on the obligatory paper work and rules which are extremely important for our safety in lab.  The summer review homework will also be discussed.  Students are responsible to get help with questions on that homework ASAP.  We will begin a unit on organic chemistry and use this topic to review bonding and inter and intramolecular forces.

1.  questionairre with 5 questions due next Friday 8/25
2.  information sheet due Monday 8/21
3.  parent letter and blog info due Monday 8/21
4.  LAB SAFETY POST-TEST on Tuesday, August 22nd

1.  Lab safety test Tuesday
2.  classroom rules and lab safety rules due Friday
3.  Discuss chapter 1 - crib notes and slides

4.  Chapter 4 review homework will be due Friday, September 29th

Tuesday, May 9, 2017

Lesson Plans May 8th – May 18th

Chemistry I Lesson Plans May 8th – May 12th

1.  continue notes thru empirical formulae
2.  procedure for Oreo Cookie percent composition lab

1.  finish notes
2.  quiz over formula weights
3.  oreo lab - due Thursday
4.  formula masses sheet due Thursday

1.  finish notes if needed
2.  finish lab if needed - data on Excel
3.  quiz back
4.  percent composition problems worksheet due Friday
5.  formula masses quiz I on Friday

1.  grade formula masses worksheet
2.  magic genie lab
3.  percent composition problems worksheet due Friday
4.  oreo labs due tomorrow

1.  quiz 1 over formula masses
2.  simplest formula sheet due Monday
3.  oreo labs due

Chemistry I Lesson Plans May 15th – May 18th

1.  grade percent composition problems
2.  oreo lab past due
3.  simplest formula worksheet due

1.  quiz 2 over formula masses
2.  true formula worksheet due Thursday

1. grade simplest formula worksheet
2.  true formula worksheet due Thursday

1.  grade true formula worksheet
2.  lab clean up day and smarty pants party day

Friday: FINALS START 1,3, and 5

Chemistry II Lesson Plans May 8th – May 12th

1.  ion solubility quiz
2.  continue notes
3.  labs overdue

Tuesday:   partner quiz and answer key due tomorrow

1.  finish notes
2.  finish solubility lab due Monday
3.  test on Tuesday

1.  partner quiz in class
2.  grade it in class
3.  questions on review
4.  finish notes if needed

1.  net ionic quiz II
2.  review due Monday

Chemistry II Lesson Plans May 15th – May 18th

1.  grade review
2.  go over quiz


1.  finish test if needed
2.  review for final

1.  clean lab
2.  4th hour smarty pants party

Friday: FINALS START 1,3, and 5

AP Chemistry Lesson Plans May 8th – May 12th


1.  magic genie demo
2.  redox quiz 1

Tuesday - Friday:  work on boats!

AP Chemistry Lesson Plans May 15th – May 18th


Monday, May 1, 2017

Chemistry Lesson Plans April 24th – April 28th and May 1st – May 4th

Chemistry I Lesson Plans April 24th – April 28th

1. Finish Double Replacement Lab
2.  worksheet II due tomorrow
3.  balancing quiz due tomorrow
4.  worksheet III/8.2 due Weds
5.  8.3 due Friday
6.  KI labs are overdue

1.  quiz II over balancing
2.  worksheet II graded
3.  finish worksheet III/8.2
4.  finish 8.3

1.  8.3 due Friday
2.  Worksheet III/8.2 worksheet due and graded

1.  quiz III over balancing
2.  test Weds over Chapter 8
3.  id and finishing reactions quiz on Monday

1.  grade 8.3 worksheet
2.  notes on formula weights
3.  quiz Monday over id and finishing
4.  formula weights sheet due Tuesday
5.  Lip Dub

Chemistry I Lesson Plans May 1st – May 4th

1.  quizzes and labs back and go over
2.  quiz over id and finishing reactions
3.  notes over formula mass and weights

1.  continue notes over formula mass
2.  spot check the formula weights sheet - to be graded tomorrow
3.  formula mass sheet due Thursday

Wednesday:  CHAPTER 8 TEST 

1.  grade formula weights
2.  quiz tomorrow over it
3.  Notes on percent composition
4.  magic genie lab if time?

1.  quiz over formula weights
2.  half-day (May Fete)

Chemistry II Lesson Plans April 24th – April 28th

1.  Net Ionic Equations I due Weds
2.  Pre-Lab for Solubility Lab


1.  Net Ionic I due

1.  finish SOLUBILITY LAB - due Monday
2.  Net Ionic 2 worksheet due Weds

1.  Continue notes on solubility
2.  Labs due Monday

Chemistry II Lesson Plans May 1st – May 4th

1.  Net Ionic I due
2.  labs due
3.  bozeman 70 on Ksp
4.  practice solubility rules

1.  quiz over solubility rules Thursday
2.  grade ionic II worksheet tomorrow
3.  super ball lab

1.  grade Ionic II
2.  quiz tomorrow
3.  continue notes on Solubility

1.  soubility rules quiz I
2.  solubility review - due Tuesday

1.  continue notes on saturation
2.  review due Tuesday

AP Chemistry Lesson Plans April 24th – April 28th

Monday - Friday:

1.  Boat Activity 1,2,and 3 due at end of week
2.  Put surface area to mass ration and surface areas on Excel document
3.  Redox set 11-14 due next Weds

AP Chemistry Lesson Plans May 1st – May 4th

Monday - Friday:

1.  Boat Activity 1,2,and 3 due at end of week
2.  Put surface area to mass ration and surface areas on Excel document

3.  Redox set 11-14 due next Weds

Tuesday, April 18, 2017

AP CHEMISTRY Chapter 1 Crib Notes – THE ATOM

Chapter 1 Crib Notes – THE ATOM                           Name:
10 points

Dalton:  Atomic Theory and the Law of Multiple Proportions
Bohr: “solar system of orbits” atomic model
N = principal quantum number, orbits, periods, levels (1 thru 7)
L = AKA “azimuthal” quantum number, blocks, shape of the orbitals, sublevels (s=0, p=1, d=2, f=3)
Ml = magnetic quantum number, orientation of the orbitals, the boxes have assigned numbers:
Ms=spin quantum number of the electron in that orbital (+1/2 or -1/2)
EXAMPLES:  Ca = [Ar]4s2  with a quantum number set of:  4,0,0,+1/2
Te = [Kr]4s24p4 with a quantum number set of:  4,1,-1,-1/2
USE CAUTION WITH "d-block" elements:  Pd = [Kr]5s24d8 with a set of 4 (not 5!!!!),2,0,-1/2
Diamagnetic = all subshells are filled/paired with electrons, elements are NOT affected by a magnet  (all electrons are paired)
Paramagnetic = all subshells are NOT completely filled/paired with electrons, elements will be affected by a magnet (some electrons are unpaired)
Rutherford:  discovered the nucleus using his gold foil experiment which led to his discovery of the proton, and he also separated radiation into alpha, beta, gamma rays using a magnet.
Thomson discovered the electron using his cathode ray tube experiment and Millikan found the charge and mass of that electron suing his oil drop experiment.
Chadwick discovered the neutron when bombarding a beryllium atom with alpha particles – what fun!
deBroglie – wave/particle nature of light
Rydberg equation:  related energy with the level the electron is on:  En = -2.178 X 10 -18 J
                                                                                                                                                           n 2
The jumpers are:  Ag, Au, Cr, Cu, Mo
Short-hand notation:  use [noble gas before it], then:
s-block:  ns1 or ns2
p-block:  ns2np 1-6
d-block:  ns2(n-1)d1-10
Anytime you see the word “ENERGY” you need to bring out these equations:
c = lѵ    c = speed of light = 3 X 108 m/s                   l= wavelength                  ѵ = frequency
E = hѵ  so:  E = hc/ ѵ
h = Planck’s constant = 6.626 X 10 -34 Js
1 m = 1 X 109 nm – need to convert anything meters to nm to find the color of the visible light
Blue = low wavelength, high frequency, high energy, 350 – 450 nm
Red = big wavelength, low frequency, low energy, 650 - 750 nm
Free response question:  10 pts
1.  Write the complete and shorthand electron configuration notation for copper and give the set of 4 quantum numbers for its last electron. (HINT:  pour it all out there)

2.  Be sure to write it as a jumper cuz it is.

CH 1. Para Vs. Diamagnetic/Quantum Numbers

CH 1.  Para Vs. Diamagnetic/Quantum Numbers      Name:
20 points
Short-hand notation:  use [noble gas before it], then:
s-block:  ns1 or ns2
p-block:  ns2np 1-6
d-block:  ns2(n-1)d1-10
1.  Write the symbol and electron configuration notation for:




2.  Write the symbol and the shorthand notation for:




n = levels or periods = 1 thru 7
l = sublevels or blocks = s = 0, p = 1, d = 2, f = 3
m = rooms in the sublevel  s = 0, p = -1,0,+1, d = -2,-1,0,+1,+2, f = -3,-2,-1,0,+1,+2,+3
s = spin, either up +1/2 or down -1/2

3.  Draw the symbol and the last orbital box for these elements.  Then write the four quantum numbers for the last electron in that element:




molybdenum – it is a jumper!!!!

In a DIAMAGNETIC ELEMENT:  all of the electrons are spin-paired so their sub-shells are completely filled, causing them to be unaffected by magnetic fields

In a PARAMAGNETIC ELEMENT:  they are strongly affected by magnetic fields because their sub-shells are NOT completely filled with electrons.

4.  Which of the elements is diamagnetic?

5.  Which of the elements is paramagnetic?