Marion, 1945 - Google Patents
A chemical-physical change demonstration apparatusMarion, 1945
- Document ID
- 8989189860482756009
- Author
- Marion A
- Publication year
- Publication venue
- Journal of Chemical Education
External Links
Snippet
AN EFFECTIVE lecture demonstration which can be used to contrast the characteristics of a physi-cal and a chemical change is based upon two simple, but spectacular, experiments. In the first of these, energizing a relay permits a weight to fall upon a porous plate. Then, to …
- 239000000843 powder 0 abstract description 7
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