You’re at the store, looking for something refreshing to drink after a hot day. You’d probably head to the cooler first, for something chilled to quench your thirst. What if your only option was a room temperature drink instead? Does the temperature of a drink or food make a difference with how we perceive its taste and flavor? Here’s a short activity to try that will get you thinking about whether temperature has the ability to “hack your taste buds.”
Ever been in this situation? You’re ready to head out the door—teeth brushed, hair styled, favorite clothes on, but grab one last swig of o.j. on your way. If you’re like most people, your first reaction will be “Yuck!” Your taste buds have just fallen victim to the effect of sodium lauryl sulfate. What’s going on?
Try this activity and then learn more about the chemistry behind it.
Each phrase in the Wordle image above represents a success story. A favorite activity. Chemistry excitement connected to some ChemClub, somewhere.
What caught your eye?
What do you want to hear more about?
What do you want to try yourself, maybe with your own ChemClub?
In the ChemClub annual survey for this past school year, advisors and students were asked to share the activities that were most successful and their favorites. Highlights from those answers are collected in the image above.
Reading through the collected survey answers each year is always fun and a bit tantalizing. By necessity, the descriptions are brief. But they make us want to know more.
For me, one example was “Making BREAKING BAD candy.” Recipe, please!
Another was “Made ‘robot’ sculptures from recycled material.” Photos, please!
It’s great for ChemClub staff to have this feedback in the survey. It can help show if particular activities from the resource packets that we send were super popular among Clubs. It also gives us ideas for future resources to develop and share. And, we love to get this small taste of your Club—what type of stuff your members loved to do during the year.
Looking for an even wider audience to share your success stories and favorites? Look no further. You’re here! The ACS ChemClub Happenings blog needs your story. Advisors and students are encouraged to send their potential blog posts and photos to firstname.lastname@example.org. We even have tips to help get you started.
What’s your success story?
First days of school are popping up all over the place. ChemClubs are getting back in the swing of things too, as members start to get together again for the 2014–2015 school year. Need some inspiration and ideas for your first meeting? Looking for a different activity or two to get students fired up for the year? Here’s a few to get your creative chemistry juices flowing as you plan for meetings.
Taste the sweet side of chemistry.
Try this “Sweet Lemonade” recipe from the ACS ChemClub Cookbook, submitted by the club from Springbrook High School, Silver Spring, MD. Fill a cup ~3/4 full of cold water. Add 1 tablespoon of lemon juice. Add 4 spoonfuls of sugar and stir. Take a sip. How sweet does it taste? Stir in an additional tablespoon of lemon juice. Try another sip. How does the sweetness change? When the second tablespoon is added, the acid in the lemon juice is more effective at separating the saccharides in the sugar (splitting the 12-carbon sucrose into two 6-carbon sugars), thus making it taste sweeter than when you added sugar to the first portion of lemon juice.
Chill out with chemistry.
Make ice cream in a bag as you explore freezing point depression. One hands-on activity is at http://www.scientificamerican.com/article/scrumptious-science-making-ice-cream-in-a-bag/. Then, follow up with the ChemMatters article “Ice, Cream… and Chemistry.”
Get messy with chemistry.
Yes, the Mentos–Diet Coke geyser has been around for awhile. But a massive jet of soda doesn’t lose its appeal! Try a variety of soda types—cola, non-cola, diet, regular, caffeinated, non-caffeinated, generic, brand-name. What gives the highest result? One description of the activity is at http://www.stevespanglerscience.com/lab/experiments/original-mentos-diet-coke-geyser.
Make something with chemistry.
Raid the recycle bin for clear deli-style containers with a recycle code #6 and bake up some homemade Shrinky Dink-style toys. Use permanent markers to color cut-out pieces of the polymer, then bake at 325° F. Toaster ovens are a portable way to do this with your club. A full description of the activity is in the collection at http://www.terrificscience.org/downloads/NCW/NCW2005.pdf (see page 12).
Decorate with chemistry.
Create colorful designs on club t-shirts using radial chromatography. Tighten a section of the t-shirt’s fabric over a container such as the mouth of a beaker and fasten with a rubber band. Then, use permanent markers to make several small dots or other designs in the center of the section. Drip rubbing alcohol onto the patterns and watch your design spread! One description of the activity is at http://chemmovies.unl.edu/chemistry/beckerdemos/BD038.html.
Be surprising with chemistry.
Show your students a candle so they can make observations, then light it, blow it out, and eat it. Have their powers of observation failed them? The “candle” is really a cylinder of raw potato (or apple or a stick of chilled string cheese) with a piece of nut stuck into it that burns when you light it. One version of the activity is at http://www.flinnsci.com/media/478451/cf10563.pdf.
Reveal the face of chemistry.
What’s your chemistry face? “Chemisery”? “Chemystery”? A Flinn Scientific demonstration shows that your attitude going into chemistry can make a difference! You’ll draw faces on chromatography paper using potassium thiocyanate and potassium ferrocyanide solutions, then spray with iron(III) chloride solution to reveal each one. A full description is at https://www.flinnsci.com/media/621873/91801.pdf.
Be thoughtful with chemistry.
You’ve just figured out a puzzle. What happens when the puzzle changes? Can you make sense of it again? Students can use small cardstock puzzles to consider the nature of science. They solve a small tangram-style puzzle at the beginning. But, can they re-solve it when you add in another piece? See the puzzles and the activity at http://www.scienceteacherprogram.org/genscience/Choi04.html.
Use your first meeting to build excitement for the rest of the year’s activities! What did your Club do?
Hear the word “book” mentioned in connection with “chemistry,” and many of us might automatically picture a textbook packed with information about elements, stoichiometry, acids and bases, and the like. But what about fiction and non-fiction that you could pick up at the local library or bookstore? Some fiction weaves chemistry and other science directly into the story, while many non-fiction books are perfect illustrations of how chemistry relates to the world around us.
The JCE ChemEd Xchange blog post “Reading Non-fiction Within a Grade 10 Chemistry Class” by chemistry teacher Lowell Thomson focuses on how he’s using the non-fiction book The Case of the Frozen Addicts with his students. He says that the book “reads almost as a mystery novel – except it’s a true accounting,” telling a story of inadvertent use of designer drugs. In addition to reading the book, his students are engaging with the material through blogging, discussions, making posters, and using Twitter.
What about having a book club activity within your ChemClub to explore chemistry through fiction and non-fiction selections? For ideas on books to read, visit the ACS ChemClub Pinterest page “Books to Read.” You might start with a book that has a related movie; for example, the movie October Sky is based on Homer Hickam, Jr.’s book Rocket Boys. The article “Teaching Chemistry Using October Sky” highlights the science shown in the movie and could be used as a jumping-off point for discussion. Or, check out the Journal of Chemical Education’s annual collection of summer reading suggestions for teachers. What books do you think we should add to the Pinterest page? Maybe your your Club already does this? Tell us about it!