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| Datta, Tejwant | 1 |
| Malone, Kathy | 1 |
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Peer reviewedMalone, Kathy; Datta, Tejwant – Physics Teacher, 1994
Describes safety hazards encountered when placing squash balls into liquid nitrogen. Suggests using racquet balls, balloons, or economical Ping-Pong balls. (MVL)
Descriptors: Chemistry, Demonstrations (Science), Elementary Secondary Education, Higher Education
