edited by DAVIDL. BYRUM
apparatw review In this month's culumn I would like to share with you two inexpensive pieces of apparatus which my students and I have found interesting and worthwhile.
Globe Public Schools Globe. A2 85501
"Apparatus Review" Form Dear Cofieague:
Would you please take a moment to share with your fellow
Fire Syringe Science Kit Inc. 777 East Park Dr. Tonowanda. New York 14150 Cat. No.: Price:
64755
A heaw walled glass tuhe fits inside an aluminum cvlinder having a iubher base. An observation window is cut into the bottom of the aluminum tuhe. A piston with small rubber " 0 seals is used to compress the gas in the tuhe. Suggested Uses This demonstration shows the relationship between pressure and temperature. When a small piece of tissue is placed in the bottom of the glass tuhe, and the piston is rapidly pushed, the tissue will ignite. Most students find this an exciting demonstration since it seems to go against what they "know" to he true. Possible AdaptationslComments This is an interest raising demonstration and can be used to allow vou to introduce a discussion of diesel engines and other topics. This is a very worthwhile use of thirteen dollars!
High School Chernishy teachers your opinion about some piece of equipment and/or teaching apparatus which you use in your
Ciassroom and/or laboratory. Your assistance will be greatly appreciated. I. Name of Item being evaluated: II. Manufactured by: ill. cog: IV. Manulactvrerr Intended Use: V. YOUR USE: VI. How would YOU rate the teaching effectiveness of this item?
Comments?
excellent
average
poo,
VII. Would YOU recommend this item tar purchase by another teacher (circle one)? YES With Reservations NO Vlll. Please comment on any improvements or new uses tat this item. IX. What particular piece of apparatus suited for the High School situation would vau like to see develooed? X. Thank You for your time and information. Please return form to: DAVID L. BYRUM Editor "Apparatus Review" C/O Globe High School 501 ASH Globe, A2 85501 ~F~~
QA (QuantitativeAnalysis) Spectroscope Supplier:
Science Kit Inc. 777 East Park Dr.
Tonawanda, New York 14150 Cat. No.: Price:
16525 $3.90 each
The spectroscope is made of plastic and is 20 cm long and the internal scale is ahout 37 cm long. It is hand held and seems relatively unbreakable. Suggested Uses Students can measure the wavelength of light from 4000 to 7000 A and can see the relation between the spectrum and the absorption hands. With the cuvet supplied, liquids can also be tested for their optical properties. After working with identified samples, the student can then use the spectroscope to identify unknowns by their wavelengths, not just their colors. Possible AdaptatlonslComments With the optional Light Absorption Kit (cat. # 16575) the effects of colored filters on the spectrum can he observed and with the cuvet liquids can he studied. This seems to he an excellent way of "quantifying" the study of the spectrum, light and absorption bands without going to a lot of expense. In the 4 years I have used these spectroscopes, not a one has been damaged or made inoperable. 668
Journal of Chemical Education
rently available equipment, apparatus, and supilies. ~anufacturersand &ppliers are invited to submit descriptions or materials for evaluation along with the reasons these items are appropriate for use in the high school laberatory Teachers who are inter-
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backbone of this column. David Bymm currently teaches chemisby, physics, and second-year science at Globe High Schaol (in addition, he coaches the cross-country and track teams there), and ha teacher chemistry in the evenings at Eastern Arizona College. Mr. B V N anended ~ Phoenix Colleae fatwo v m . Hemen transfetred 10 ~ l l l & aStale -nberr I f #here r;t.received n r BA n Chem 913 n 1977 n DecemDer 1978 Oar a *as a*araed has MS m Saconnsq E O m a l m an0 AdmmnIralcm trom m e Un6rernaty 01 Aruona n Tucson. David has long been active in chemical education having presented ws at many 1-1, regional, and national meetings including CHEMD 75 and 79. He isalsoactive in the ArironaScience Teachers Association.
