Plop!Plop! Fizz! Fizz! Oh, what things chemistry teachers can ...
Plop! Plop! Fizz! Fizz! Oh, the things chemistry teachers can do with AlkaSeltzer! Patricia Mason, PAEMST 2003 Delphi Community High School [email protected] Judith Flint Baumwirt Granada Hills Charter High School [email protected] July 2005, ChemEd Conference, UBC, Vancouver, Canada Experiments and Activities Alka
Seltzer Rainbow - ChemFax Demonstration (provided by Flinn Scientific) Alka Seltzer Rockets Buffering Ability of Alka Seltzer Tablets Buffer Balancing Acts - ChemFax Demonstration (provided by Flinn Scientific) Common Ion Effect on the Solubility of Alka Seltzer Experiments and Activities Change in pH and Temperature as a
Reaction Occurs Differentiating Liquids Decomposition of Effervescent Tablets Decomposition of Effervescent Tablets with Sample Data Analysis/Results Density Challenge Does a Gas Have Mass? Experiments and Activities Effect of Particle Size on Rate of Reaction
Demonstration Effect of pH on rate of reaction Effect of Temperature on Rate of Reaction Demonstration Rate of Reaction Lab - Combined Activities for Students Equilibrium and Rate Determining Step demonstrations Experiments and Activities Micro Popper (provided by Flinn Scientific) Quantitative Determination of Sodium
Bicarbonate in Alka Seltzer Second Quarter Laboratory Evaluation: Analysis of Alka Seltzer (provided by Flinn Scientific) What Chemists Do: Identification and Analysis - White Powder Identification Alka-Seltzer Rockets Factors affecting the rates of solution
It is important to break tablets evenly into four quarters Only Fuji canisters provide a good seal (lid fits securely inside the canister) Inverted in the launcher Can be used test variables Factors Affecting Rate of Reaction Effect of Temperature on Rate of Reaction Teacher
demonstration Student activity Effect of Particle Size on Rate of Reaction Whole tablet Broken in half Quartered Coarsely ground Finely ground
Effect of pH on Rate of Reaction Complicated set-up Glass work done by teacher saves time Solutions available of various pH Each group uses water plus 2 others Water displacement technique Plotting data and analysis Comparison of rates with pH Common Ion Effect Can
be used as a discrepant event Why do the tablets dissolve at different rates and in varying amounts? Monitoring Changes in pH and Temperature as Reaction Occurs Must use probeware for pH Temperature Tablets are added to room temperature water
Data taken for 5 minutes Variables can be changed Number of tablets Division of tablets Amount of water Amount of agitation Buffering Ability of Alka-Seltzer
Tablets Macro-Demonstration Burets HCl and NaOH Universal indicator HCl with water HCl with tablet NaOH with tablet NaOH with water Can also use pH probes Micro-Activity Broken tablets (0.15g to 0.20 g samples)
Well-plates Universal indicator Calibrate the micropipettes for drops Does a Gas Have Mass? Can be used initially for introduction to Chemistry Can be used to demonstrate conservation of mass When a gas is produced is mass lost? Baggie provides a closed system
Differentiating Liquids Lab Good introductory lab activity Properties of Liquids Viscosity Density Solubility Detailed data recording and evaluation Inquiry section, if time permits Equilibrium and Rate Determining Step Demo An
entertaining student-centered activity Shows the progress of a reaction from reactants to a mixture of reactants and products Can visually recognize that the reaction is favored in the decompositon direction The Slow step is obvious in this demonstration What Chemists Do A Beginning Analysis Lab This
is a good application of inquiry and the scientific method. May be useful as a beginning lab on analysis Students have three unknowns to determine so the lab requires some extended prep time. Quantitative Determination of Sodium Bicarbonate AP Chemistry Stoichiometry
Presentation of Knowledge and Ideas: Present information, findings, and supporting evidence such that listeners can follow the line of reasoning and the organization, development, and style are appropriate to task, purpose, and audience.
Marie B Office of the Secretary of Higher Education Received Lumina Foundation Grant New Jersey received a $100,000 attainment challenge grant from the Lumina Foundation to help increase the state's postsecondary adult attainment rate to 65 percent by 2025.
Starter: Connotation - What do you think the author suggests about this character through the connotations of her appearance? My sister, Mrs Joe, with black hair and eyes, had such a prevailing redness of skin that I sometimes used to...
FSU Home page (FSU) Blackboard (Bb), Email (@fsu), Human Resources (HR), Financials (FI), Student Central (SC), Service Center, Business Objects (BI) Online Faculty Resources. Quick links for key faculty resources available under the "Teaching" menu.
Feb. 24, 2016 / Please Do Now. 1. Sharpen Pencil. 2. Collect Please Do Now from counter in front of G. Pigs, chrome book, scavenger hunt worksheet from turn in basket. 3. Write Homework into Planner / Study Human Body...
Oculomotor cues Physiological cues based on our ability to sense the tension in the muscles that control eye movement and lens focus. Accomodation The angular muscles in the eye relax and contract to change the shape of the lens. Effective...
The reader feels like he/she is a part of the writer's experience of the subject.Descriptive writing is used in all modes of writing (Expository, Narrative, and Persuasive) to create a vivid and lasting impression of the person, place or thing.