Acids, bases & pH Week-18

Monday-assignment was to answer the section review questions and Practice problems of chapter 16 in the textbook.

Tuesday-notes on the reading and deciphering pH and pOH. Along with calculating pH and pOH.
Static notes link-https://drive.google.com/file/d/0BxNwAcMMxlO3OTdPbHNFYm1xZGc/view?usp=sharing

Wednesday- naming acids, converting pH to concentration and conjugate acid base pairs.
Static notes link-https://drive.google.com/file/d/0BxNwAcMMxlO3Ri1IRzMtS3hJVUE/view?usp=sharing

Thrusday- AT Acids & Bases: Answer key-
 https://drive.google.com/file/d/0BxNwAcMMxlO3WFlvd2E3ZUI0UTg/view?usp=sharing

Here is the website for the acid-base PowerPoint notes: https://docs.google.com/open?id=0BxNwAcMMxlO3UUdraWo1bkFDS0E

Solubility & Molarity

Week17- (Dec 1-5)

Monday-video link on how to read a solubility curve graph -https://docs.google.com/file/d/0BxNwAcMMxlO3TGVHMThLbjhvdVk/edit?usp=docslist_api
HW worksheet link-http://www.canogaparkhs.org/ourpages/auto/2013/2/21/40959867/Solubility%20Curve%20Worksheet.pdf

Tuesday-Link to how to prepare a standard molar solution. This is homework. As you are watching the video make at least 10 procedural steps that will enable you to do the lab tomorrow. THIS is a mandatory requirement in order to the lab tomorrow. 
https://www.youtube.com/watch?v=A2YyIo8vSCA

Static notes link-Molarity
 https://drive.google.com/file/d/0BxNwAcMMxlO3N3VQSWtjcWs1NVU/view?usp=sharing

Wednesday-dilution of molar solutions.Static notes link-https://drive.google.com/file/d/0BxNwAcMMxlO3OXRvbnVMT2dOb0E/view?usp=sharing

Nov.(17-21) Stoichiometry 

Week 16

Monday-introduction to stoichiometry with mole to mole calculations
Static notes-
 https://drive.google.com/file/d/0BxNwAcMMxlO3MzhWYlhiXzJUMDg/view?usp=sharing

Video notes- mole to mole calculations
 https://drive.google.com/file/d/0BxNwAcMMxlO3UGw3MGFEMmU1eVk/view?usp=sharing

Tuesday-stoichiometry mass to mass calculations, and PhET.
Static notes-
 https://drive.google.com/file/d/0BxNwAcMMxlO3OGE2aFBFdGNOalk/view?usp=sharing
Video notes- mass to mass calculations
 https://drive.google.com/file/d/0BxNwAcMMxlO3YzFTNVhPelJuQm8/view?usp=sharing

Wednesday- Limiting reactants and Lab Stoi.(NaHO3). Link to limiting reactants with moles- http://www.lakeland.k12.nj.us/cms/lib04/NJ01001488/Centricity/Domain/196/limiting%20stoich%20203.pdf
Static notes- Limiting reactants
 https://drive.google.com/file/d/0BxNwAcMMxlO3bnZfT0k0d1FwbHc/view?usp=sharing
Video notes- Limiting reactants

Thursday-almost there on stoichiometry AT Pic. Star identifies questions you all missed the most Link-front page
 https://drive.google.com/file/d/0BxNwAcMMxlO3LVdTcmVnQzVjMEU/view?usp=sharing
Link-back page-
 https://drive.google.com/file/d/0BxNwAcMMxlO3ZDQ0WWJ5dTB1Slk/view?usp=sharing


            PowerPoint notes on stoichiometry
https://drive.google.com/file/d/0BxNwAcMMxlO3SVhVNFNtYUtERW8/edit?usp=sharing

                         Stoichiometry Extras 
http://www.sciencegeek.net/Chemistry/taters/Unit4Stoichiometry.htm 

http://www.lsua.us/chem1001/stoichiometry/stoichiometry.html 

Week-15 (10-14) Nov.

Monday-introduced how to determine empirical formula from percent Composition. Static notes link
- https://drive.google.com/file/d/0BxNwAcMMxlO3b2RMOGd4N1NGZHM/view?usp=sharing
-Link to video notes
- https://drive.google.com/file/d/0BxNwAcMMxlO3Z284M2d2QVFuYlE/view?usp=sharing

Tuesday-introduced how to determine molecular formula by using the empirical.
Static notes link-https://drive.google.com/file/d/0BxNwAcMMxlO3X2x5MkxGVlpBaFU/view?usp=sharing

Week 14- (3-7 November)

Monday-introduce significant figures with worksheets.
Static note-https://drive.google.com/file/d/0BxNwAcMMxlO3dnBuTk40OF9OdGc/view?usp=sharing
Video notes-

Tuesday- Teacher Planning Day

Wednesday-Introduction to calculating the Gram formula mass of compounds and molecules and how to calculate percent composition of compounds and molecules
Static note Link-https://drive.google.com/file/d/0BxNwAcMMxlO3N3owTDhUMkFkd1U/view?usp=sharing
Video notes calculating GFM
- https://drive.google.com/file/d/0BxNwAcMMxlO3YXRBRUcydEhBblk/view?usp=sharing
Video notes % comp
- https://drive.google.com/file/d/0BxNwAcMMxlO3cy1pQktodzctRXM/view?usp=sharing

Thrusday- Video notes Gram to mole
- https://drive.google.com/file/d/0BxNwAcMMxlO3U2pYODZadUlWZU0/view?usp=sharing

Friday-Converting grams to atoms, molecules or particles
Video notes link-1st-https://drive.google.com/file/d/0BxNwAcMMxlO3em5uYVVjcXg3b2c/view?usp=sharing
2nd-https://drive.google.com/file/d/0BxNwAcMMxlO3RGhNV09LQjlzb2M/view?usp=sharing

 Static notes-https://drive.google.com/file/d/0BxNwAcMMxlO3b3o2ZXJWdmd6S0U/view?usp=sharing

WEEK-13(27-31 Oct.)

Monday-AT Chem reactions & Balancing
Link-https://drive.google.com/file/d/0BxNwAcMMxlO3by04S3JzX2FUN1E/view?usp=sharing

Tuesday- Test Chem reactions & Balancing

Wednesday- Chemistry's greatest discoveries film notes, and demos

Thursday-introduced factor labeling (dimensional analysis) with worksheets

Friday-continued with factor labeling completed worksheets

Week 12 (20-24) October
Types of chemical reactions and balancing chemical equations

Monday-notes, computers Animations and worksheet to reinforce new material.
Link to video notes-https://drive.google.com/file/d/0BxNwAcMMxlO3aGxXY2dZM3lTYWc/view?usp=sharing
https://drive.google.com/file/d/0BxNwAcMMxlO3aXdlYWRaWVpBYjg/view?usp=sharing
https://drive.google.com/file/d/0BxNwAcMMxlO3OFFDSWVPM1BKWjQ/view?usp=sharing
https://drive.google.com/file/d/0BxNwAcMMxlO3Njk4RDFWY3dKTG8/view?usp=sharing

Link to static notes- https://drive.google.com/file/d/0BxNwAcMMxlO3dXhCOXdhb2NlcjQ/view?usp=sharing

Tuesday- PhET Lab assignment Link- https://drive.google.com/file/d/0BxNwAcMMxlO3bnl0UGNhYTVIYUk/view?usp=sharing

Wednesday-worked on sunglass project and the media Center.

Thursday-notes, lecture, computer simulations and video on how to classify reactions in five categories.
Static note link-https://drive.google.com/file/d/0BxNwAcMMxlO3R21KRWhrMWNUeGc/view?usp=sharing
Video notes link-1st-https://drive.google.com/file/d/0BxNwAcMMxlO3bGdzSEhvU0hUVE0/view?usp=sharing
2nd-https://drive.google.com/file/d/0BxNwAcMMxlO3R1RVRVVUZ1EzWWM/view?usp=sharing
3rd-https://drive.google.com/file/d/0BxNwAcMMxlO3cWpCaE1FQ3JjXzg/view?usp=sharing

Friday-

Link to worksheets-http://sciencespot.net/Media/baleqchall.pdf
-http://stemsheets.com/science/balancing-equations-worksheet
-http://chemistry.about.com/od/chemicalequations/a/How-To-Balance-Equations.htm

PowerPoint-Chemical reactions and classification-

https://docs.google.com/file/d/0BxNwAcMMxlO3cVhNVGxGVnZKN2c/edit?usp=sharing

Week-11 (13-17 Oct.)-Nomenclature

Monday-worked on using a flowchart to help students who are struggling with name compounds and molecules.Video link, illustrating, Lewis dot structure   Ionic compound-
 https://drive.google.com/file/d/0BxNwAcMMxlO3WGYtYlctQk5WSFk/view?usp=sharing

Tuesday-almost there nomenclature.

Wednesday-PSAT was given to all sophomores third and fourth block were given differentiated study guides to help study and correct errors on almost there.

Thursday-just on nomenclature was given.

Friday-students began Work on Sunglass project.

Week 10- Bonding & Nomenclature

Monday- Note on Ionic and covalent bonding with a worksheet. Link-https://drive.google.com/file/d/0BxNwAcMMxlO3Nkd5RmxlYy16U0U/view?usp=sharing & world chemistry film on chemical bonds. Here is the link-then scroll down to the video chemical bonds.http://www.learner.org/resources/series61.html

Tuesday-Ionic and covalent bonding and the application of the crisscross rule of oxidation numbers notes-  https://drive.google.com/file/d/0BxNwAcMMxlO3UWVKUlZCRjZBM2M/view?usp=sharing

Video link, used today to illustrate Ionic and covalent bonding
http://chemistry.about.com/video/Ionic-v-Covalent-Chemical-Bond.htm

PowerPoint

https://drive.google.com/file/d/0BxNwAcMMxlO3enpqQzQ2TlpCNDA/view?usp=sharing

Week-8 (29-30 Sept.)-(1-3 Oct.)

Monday- Discussed rules on how electrons fill their orbitals and how the d and f orbitals of the periodic table differ from the rest.Watch world of chemistry video discussing this topic, and gave students a new packet to reinforce the New material.

Tuesday-follow-up notes on electronic configuration, noble gas notation of electron configuration, and Lewis dot structured. Link-https://drive.google.com/file/d/0BxNwAcMMxlO3c2JfVkJHWHJTTHM/edit?usp=sharing

Wednesday- notes https://drive.google.com/file/d/0BxNwAcMMxlO3V2xkd1NRTEJIbU0/edit?usp=sharing

Week 7- EMS and electron configuration

Monday- notes Link- https://drive.google.com/file/d/0BxNwAcMMxlO3V0JKRnI0MUUwVjA/edit?usp=sharing and worksheet on EMS. Videos student must view and describe LINKS- https://www.youtube.com/watch?v=m4t7gTmBK3g AND https://www.youtube.com/watch?v=HPcAWNlVl-8

Tuesday- Reinforced EMS

Wednesday-photon emission and energy calculations of Photons notes- https://drive.google.com/file/d/0BxNwAcMMxlO3Wkc5blVHdkpmLU0/edit?usp=sharing

Thursday-Emission spectroscopy notes- https://drive.google.com/file/d/0BxNwAcMMxlO3N0pCM2lIWC0wU2c/edit?usp=sharing and lab.

Friday- Electron configuration notes-https://drive.google.com/file/d/0BxNwAcMMxlO3Rk1tUnlTOGowUWs/edit?usp=sharing & video notes-
https://drive.google.com/file/d/0BxNwAcMMxlO3UFZEMUNYMEpIR3M/edit?usp=sharing

WEEK-6 Nuclear Chemistry (8-12 September).

Monday-note and worksheet on three main types of radiation and writing nuclear decay equations. Here is the link to the notes- https://drive.google.com/file/d/0BxNwAcMMxlO3UkVSUHFrRDF3MWM/edit?usp=sharing

Tuesday-notes and worksheet on half-life of radioactive isotopes. Here is the link to the notes- https://drive.google.com/file/d/0BxNwAcMMxlO3UkZDRVNnSHF3TlE/edit?usp=sharing

Wednesday-worked on nuclear project in the media center.

Thursday-quiz on nuclear chemistry and worked on nuclear project.

Friday- 2nd element quiz and began presentation of projects.

Week 5- atomic structure and Periodic table (2-5 September)


Tuesday-notes on periodic table and periodicity LINK- https://drive.google.com/file/d/0BxNwAcMMxlO3UUNfbFhoOTdFWFE/edit?usp=sharing

World of chemistry at home on the periodic table link- http://www.learner.org/resources/series61.html Scroll down to periodical table.

Wednesday-Almost There and study guide given for test to be Friday.

WEEK 4- Atomic structure (25-29 Aug.)

Monday- World of chemistry link to the atom:http://www.learner.org/resources/series61.html  Then scroll down to the video the atom.

Tuesday- Atomic structure video notes pt.1- https://drive.google.com/file/d/0BxNwAcMMxlO3dWlsejBydTFucnM/edit?usp=sharing
pt.2- https://drive.google.com/file/d/0BxNwAcMMxlO3LVlaTFhFbThKUHc/edit?usp=sharing

Notes- https://drive.google.com/file/d/0BxNwAcMMxlO3bWhkb3ppRnk5LU0/edit?usp=sharing

Work packet given out (ATOMIC BASICS)

Thursday-note on average atomic mass https://drive.google.com/file/d/0BxNwAcMMxlO3WG5lY3FvanZQU3c/edit?usp=sharing and PhET lab (Atom builder) signed. PhET due 2nd September.

NOTES & LINKS

Powerpoint Atomic Structure:https://docs.google.com/file/d/0BxNwAcMMxlO3R2RfWndaeC1vaGM/edit 

(Try the simulations- build an atom and isotopes and atomic mass)
http://phet.colorado.edu/en/simulations/category/chemistry   

Week 3-states of matter (18-22 August).

Monday-Notes and worksheet on specific heat given- https://drive.google.com/file/d/0BxNwAcMMxlO3VFQwYi0zYUdVVjg/edit?usp=sharing

Tuesday-specific heat lab (Food energy).

Wednesday-almost there quiz

Thursday- film properties of matter with questionnaire, and review of almost there with differentiated focus material for each student. Links to differentiated material- https://drive.google.com/file/d/0BxNwAcMMxlO3ME9qMm1pdld1WXc/edit?usp=sharing https://drive.google.com/file/d/0BxNwAcMMxlO3ZEQ5VEtnLWp0VUU/edit?usp=sharing

Friday-test on nature of matter and energy.

PowerPoint notes for this section- https://drive.google.com/file/d/0BxNwAcMMxlO3cFY4MEEzR1BpVUU/edit?usp=sharing

Week 2 (Aug.10-15) Nature of matter, and properties of matter

Monday- Quiz on introduction to chemistry, on introduction to chemistry and lab safety, metric system and scientific notation. Also completed observation lab, analysis and conclusion to be finished for homework DUE Thursday.

Tuesday- Notes on classification of matter (video)
 part 1- https://drive.google.com/file/d/0BxNwAcMMxlO3S3drUFE0amdzRzQ/edit?usp=sharing
 part 2- https://drive.google.com/file/d/0BxNwAcMMxlO3V092cnJTTUJrQW8/edit?usp=sharing

Notes of day- https://drive.google.com/file/d/0BxNwAcMMxlO3blpPeVlTN2J4a0U/edit?usp=sharing

Wednesday-Did lab on physical and chemical changes. Website for Separation Tech. -http://www.kentchemistry.com/links/Matter/separation.htm & distillation- https://www.youtube.com/watch?v=xxNfJLMNS4E

Thursday - Notes states of matter pt.1- https://drive.google.com/file/d/0BxNwAcMMxlO3M1l2eWM0c3NXREE/edit?usp=sharing world of chemistry video with questions. Here is the link, Then scroll down to the video on states of matter-
 http://www.learner.org/vod/vod_window.html?pid=797.

Friday - Notes: https://drive.google.com/file/d/0BxNwAcMMxlO3cC1WdzJEYUdaXzQ/edit?usp=sharing & https://drive.google.com/file/d/0BxNwAcMMxlO3Q1hvc0FzMWxlMm8/edit?usp=sharing

Website with separation technique- http://www.bbc.co.uk/bitesize/ks3/science/chemical_material_behaviour/compounds_mixtures/revision/9/

PowerPoint notes for this section- https://drive.google.com/file/d/0BxNwAcMMxlO3cFY4MEEzR1BpVUU/edit?usp=sharing

Week-1 (4-8 Aug.)
Monday-syllabus, VARK test , and Alchemy versus chemistry video and demo.
Tuesday-Lab safety, lab equipment, and lab orientation.

Wednesday- PowerPoint notes-https://drive.google.com/file/d/0BxNwAcMMxlO3Sm9wYWtUU21vNEE/edit?usp=sharing measurements, i.e. metric system conversions and scientific notation. Continue with lab orientation, and good practices and techniques. Scientific notation ,metric system prefixes SI units and how to measure correctly using meters stick. Try this online lab equipment quiz for review- http://www.sciencegeek.net/Chemistry/taters/labequipment.htm

Thursday-begin lab orientation.

Friday-Introduction to chemistry video and review over Mondays quiz.

-Chem video http://www.learner.org/resources/series61.html

-BBC Science article http://www.bbc.co.uk/news/business-23281950

-HW- Watch Lab safety video at http://www.youtube.com/watch?v=hv9imJzZWrY and write main safety ideas (10 minimum)

Absent students-

1.  acquire the notes of the day
2.  to make up lab, write a one-page paper on the importance of using standards in science.  (Include how standards are used and what are the different standards used in science).
3. Watch chemistry video hyperlink above and answer these questions                                        

H.W> Watch YouTube Lab safety video and follow the above mentioned requirements.

1.  notes on the metric system; how to do metric conversions; writing numbers in scientific notation; multiplying and dividing numbers in scientific notation using calculator. For reinforcement look at pages 126-132 in your textbook and do some of the problems on page 164 (1-20).
2.  Hand out issues with the lab equipment that will be used in class throughout the year.
3. http://www1.nsd131.org/classpages/awilkens/Shared%20Documents/Scientific%20Notation%20Worksheets.pdf This is the website used to practice metric conversions and scientific notation conversion multiplication and division. http://www.lavc.edu/math/math125/Worksheets/MDscientific.pdf
4. Handout issued with safety regulations for parent signature and science lab orientation to be performed Friday.

1.  that safety and that equipment will be discussed.
2. To those who perform science lab orientation

Last Week

Here is the website for the acid-base PowerPoint notes: https://docs.google.com/open?id=0BxNwAcMMxlO3UUdraWo1bkFDS0E

Monday-introduced titration with terms and calculations. Assigned reading textbook pages 582-584 define terms. Do problem on page 584 and page 591 (43, 44).

HOMEWORK- View this 10 minute video to prepare for tomorrow's titration lab!!!!  http://www.youtube.com/watch?v=JBpren-koAw .

Tuesday- Lab titration

Wednesday- Almost There link to check answers- https://drive.google.com/file/d/0BxNwAcMMxlO3Qm5HWWdLeDg2c0U/edit?usp=sharing

Solutions, Solubility & Molarity

Thursday- Notes- https://drive.google.com/file/d/0BxNwAcMMxlO3ZXBRWE9NTUUyaXM/edit?usp=sharing

Video link- http://www.learner.org/resources/series61.html  then scrolled down to the mole.

Friday-Notes on molarity https://drive.google.com/file/d/0BxNwAcMMxlO3eGZ2VVM4bFNVZW8/edit?usp=sharing and worksheet to reinforce molarity, and solubility curves of solutions.

Monday- PhET lab Concentration and Molarity

Tuesday- Notes on dilution of solution- https://drive.google.com/file/d/0BxNwAcMMxlO3V1A4NGpfQ3B0WWs/edit?usp=sharing

Thrusday- Notes https://drive.google.com/file/d/0BxNwAcMMxlO3dm40d1pXOGJIT2M/edit?usp=sharing Acids & Bases

Friday- Calculating pH and pOH from hydronium and hydroxide ion concentrations Notes- https://drive.google.com/file/d/0BxNwAcMMxlO3QzlFa2FESE1oUmM/edit?usp=sharing

Finished stoichiometry and started solutions

April 28-May 2

Monday-actual, theoretical and percent yield of stoichiometry problems. Notes at this link- https://drive.google.com/file/d/0BxNwAcMMxlO3dWJMMmdGSXlUZzA/edit?usp=sharing

Tuesday-Almost There on stoichiometry and reviewed for test Wednesday. Notes https://drive.google.com/file/d/0BxNwAcMMxlO3QkE3UWVzUUZ3NkU/edit?usp=sharing

Wednesday-Test on stoichiometry.

Thursday-Began section on solutions notes and worksheet covering solubility curves.

Stoichiometry -April 21-25

Monday-note on mole to mole Stoichiometry. Link to notes- https://drive.google.com/file/d/0BxNwAcMMxlO3ZDRsYVk4eGRySlk/edit?usp=sharing

PowerPoint notes on stoichiometry-https://drive.google.com/file/d/0BxNwAcMMxlO3SVhVNFNtYUtERW8/edit?usp=sharing

Here is a link to a video that it similar to my lecture on stoichiometry.  http://www.youtube.com/watch?v=lVT0S-W_wEM

Tuesday- PhET lab on stoichiometry using guided instruction sheet.

Wednesday-notes on mass to mass stoichiometry problems. Link to notes- https://drive.google.com/file/d/0BxNwAcMMxlO3QktVS2dhRUw4djA/edit?usp=sharing

Thursday-notes on percent yield, and theoretical yield. Link to notes-


Friday-special guest presenter on nuclear energy.

 Stoichiometry Extras 
http://www.sciencegeek.net/Chemistry/taters/Unit4Stoichiometry.htm 

http://www.lsua.us/chem1001/stoichiometry/stoichiometry.html 

April 14-18 (empirical and molecular formula)

THE MOLE

 POWERPOINT on the mole-https://docs.google.com/file/d/0BxNwAcMMxlO3QlZQSU16U19CUmc/edit?usp=sharing

Monday-Moles are forever interactive lab, notes on empirical formula and worksheet supplied. LINK FOR NOTES- https://drive.google.com/file/d/0BxNwAcMMxlO3dmhZMF9VbnR0Ulk/edit?usp=sharing

Tuesday-Practice problems on a empirical formulas and notes on molecular formula and worksheets. Lab on hydrate empirical formula reading and prelab questions assigned LINK FOR NOTES- https://drive.google.com/file/d/0BxNwAcMMxlO3NDRuZTR2bnFiNVk/edit?usp=sharing

Wednesday-Lab on empirical formula of hydrates and study guide review given.

Thursday-Almost there, covering gram formula mass, the mole and empirical molecular formulas.

Friday-Test on Gram formula mass, the mole and empirical molecular formulas.

GFM & MOLE-April 7-11

THE MOLE

 POWERPOINT on the mole-https://docs.google.com/file/d/0BxNwAcMMxlO3QlZQSU16U19CUmc/edit?usp=sharing

Monday-Note on Gram formula mass https://drive.google.com/file/d/0BxNwAcMMxlO3clRDN1g3YUMxRTA/edit?usp=sharing World of chemistry video link- http://www.learner.org/resources/series61.html Then scroll down to the video on the mole.

Tuesday-Notes on percent composition and the mole https://drive.google.com/file/d/0BxNwAcMMxlO3VGwzX1Q0SFFnaFU/edit?usp=sharing Four page worksheet on the mole issued Due Friday 11 April.

Wednesday-note on converting moles to grams, and vice versa. Or converting atoms, molecules, and formula units to moles, and vice versa.
https://drive.google.com/file/d/0BxNwAcMMxlO3Q1g4RVVqS2pMNE0/edit?usp=sharing

Week-11 Chemical reactions and balancing chemical equations(17-22 March)

Monday-notes on parts of the chemical equation and evidence of chemical reactions and worksheet introduction to balancing chemical equations. NOTES- https://drive.google.com/file/d/0BxNwAcMMxlO3SV9CN0pEUERBWTQ/edit?usp=sharing

Tuesday-balancing chemical equations, using PhET website and Balancing Act website. Web links supplied here- PhET-http://phet.colorado.edu/en/simulation/balancing-chemical-equations

Balancing Act link- http://education.jlab.org/elementbalancing/

Wednesday- Notes on classifying reaction- https://drive.google.com/file/d/0BxNwAcMMxlO3d3d2NXFPYXdIOFE/edit?usp=sharing 

Thursday-notes on predicting products of a chemical reaction, and started part one of reactions lab(activity series of Metals) notes- https://drive.google.com/file/d/0BxNwAcMMxlO3bTNva01WS203b0k/edit?usp=sharing

Friday-finish part two of reactions lab (double replacement reactions), and handed out study guide for Almost There on Monday and test Tuesday.

PowerPoint-Chemical reactions and classification-

https://docs.google.com/file/d/0BxNwAcMMxlO3cVhNVGxGVnZKN2c/edit?usp=sharing