The nail bottle demonstration is one that many of us have conducted in our classes. To perform this demonstration, 2 – 3 mL of ethanol is placed into a plastic bottle that has two nails punctured into opposite sides of the bottle. After stoppering the bottle, a Tesla coil is touched to one of the nails. A spark jumps from one nail to the other, which initiates the combustion of vaporized ethanol inside the bottle. We recently filmed this reaction with our high speed video camera.
inquiry-based discovery learning
Fostering Engagement in Nanotechnology
The Feburary 2014 issue of the Journal of Chemical Education is now available online to subscribers at http://pubs.acs.org/toc/jceda8/91/2. The February issue features articles on nanotechnology in the areas of public engagement, instrumentation, and laboratory experiments.
ACS Publications—Most Trusted. Most Cited. Most Read
The January 2014 issue marks the start of the 91st volume of the Journal of Chemical Education. This issue plus the content of all past volumes are available online to subscribers at http://pubs.acs.org/jchemeduc. The January 2014 issue will be available as a sample issue for the entire year, so the full text of all articles can be accessed without a subscription. Subscription information is available at http://pubs.acs.org/page/subscribe.html?ref=jceda8.
This week I talked with Alice Putti who teaches Chemistry and AP Chem in West Michigan. Below are her answers to our inquiry questions:
Q1: How do you define inquiry? or What does inquiry look like to you?
Changing the Landscape of Chemical Education
The December 2013 issue of the Journal of Chemical Education is available online to subscribers at http://pubs.acs.org/toc/jceda8/90/12. This issue of JCE plus the content of all past issues, volumes 1 through 90, are available to subscribers at http://pubs.acs.org/jchemeduc.
This year one my goals is to use this space to talk specifically with various teachers about how they use inquiry in their chemistry classrooms. My four questions are:
I expect that most high school chemistry teachers assign some type of laboratory related to types of chemical reactions including synthesis, decomposition, single replacement and double replacement reactions. I have used several published versions, but I am sharing my modifications.
20 minutes prep, 40 minutes laboratory, 15-20 minutes discussion
Students proceed through a prior knowledge activity, practice creating and using a voltaic cell and use of a model designed to simulate the particulate level activity within a voltaic cell. The teacher checks for student understanding at specific points as groups work together. A discussion follows to help clarify ideas.
About one 60 minute class period for lab and manipulative procedure.
Students will proceed through a pre-lab engagement activity, organize element cards based on similarities & trends, discuss trends with the class and then produce a periodic table that includes the trends discussed within the lab. The teacher will check for student understanding at specific points as groups work together.
Two 60 minute class periods for procedure. You may wish to include more time for discussion. The assessment portion can be done as homework.