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{{short description|Educational toy}}
A '''chemistry set''' is an ] allowing the user (typically a ]) to perform simple ] ]. The best known such sets were produced by the ], an early 20th century American manufacturer of educational toys.
{{Other uses}}


{{external media | width = 210px | float = right | headerimage=] | video1 = , ] }}
Typical contents might include:

A '''chemistry set''' is an ] allowing the user (typically a ]) to perform simple ] ]s.

==History==

===Forerunners===
{{stack|
]
}}
{{stack|
]
}}
The forerunners of the chemistry set were ] books on "natural magick", "which all excellent wise men do admit and embrace, and worship with great applause; neither is there any thing more highly esteemed, or better thought of, by men of learning."<ref name="Deckard">{{cite book|last1=Deckard|first1=Michael Funk|last2=Losonczi|first2=Péter|title=Philosophy begins in wonder : an introduction to early modern philosophy, theology, and science|date=2010|publisher=Pickwick Publications|location=Eugene, Or.|isbn=978-1556357824|pages=55–57|url=https://books.google.com/books?id=IYcSCgAAQBAJ&pg=PA90|accessdate=2016-02-04 }}</ref> Authors, such as Giambattista della Porta, included chemical magic tricks and scientific puzzles along with more serious topics.<ref name="Deckard"/><ref name="Macrakis">{{cite book|last1=Macrakis|first1=Kristie|title=Prisoners, lovers, & spies : the story of invisible ink from Herodotus to al-Qaeda|date=2014|publisher=Yale University Press|location=New Haven|isbn=9780300179255}}</ref>

The earliest chemistry sets were developed in the ] in England and Germany to teach chemistry to adults. In 1791, ''Description of a portable chest of chemistry : or, Complete collection of chemical tests for the use of chemists, physicians, mineralogists, metallurgists, scientific artists, manufacturers, farmers, and the cultivators of natural philosophy'' by ], translated from German, was published in English.<ref name="Goettling">{{cite book|last1=Goettling|first1=Johann Friedrich August|title=Description of a portable chest of chemistry : or, Complete collection of chemical tests for the use of chemists, physicians, mineralogists, metallurgists, scientific artists, manufacturers, farmers, and the cultivators of natural philosophy / invented by J.F.A. Gottling; translated from the original German|series=Vollständiges chemisches Probir-cabinet. English.|date=1791|publisher=Printed for C. and G. Kearsley|location=London|url=http://babel.hathitrust.org/cgi/pt?id=osu.32435018354548;page=root;view=image;size=100;seq=9}}</ref> ] of London, England also sold portable chemistry sets and materials to refill them.<ref name="Cook"/> Primarily used for training druggists and medical students, they could also be carried and used in the field.<ref name="Schmidt"/>

Scientific kits also attracted well-educated members of the upper class who enjoyed experimenting and demonstrating their results.<ref name="Schmidt">{{cite journal|last1=Schmidt|first1=James M.|title=The Chemistry Set: Chemistry's legacy of the home laboratory|journal=Chemical Heritage Magazine|date=Spring 2001|volume=19|issue=1|pages=12–13, 34–36}}</ref> ] of Philadelphia presented a ''Young Chemist's Pocket Companion'' (1797) with an accompanying portable laboratory that specifically targeted ladies and gentlemen. ]'s books on chemistry helped to popularize chemistry as a well-to-do pastime for both men and women.<ref name="Cook">{{cite journal|last1=Cook|first1=Rosie|title=Chemistry at Play|journal=Chemical Heritage Magazine|date=2010|volume=28|issue=1|pages=20–25|url=https://www.sciencehistory.org/distillations/magazine/chemistry-at-play|accessdate=2018-03-23}}</ref>

{{stack|]}}
Beginning in the late 1850s, ] sold a line of "chemical cabinets", eventually offering 11 categories. These were marketed primarily to adults including elementary school teachers as well as students at the Royal Naval College, the ], and the universities of ] and ].<ref name="Cook"/>

From the mid to the late 1800s, in England, magic and illusion toys enabled children to make their own fireworks, create disappearing inks, and cause changes in color, tricks that were mostly chemically based.<ref name="Nicholls">{{cite news|last1=Nicholls|first1=Henry|title=The chemistry set generation|url=http://www.rsc.org/chemistryworld/issues/2007/december/thechemistrysetgeneration.asp|accessdate=2016-02-01|work=Royal Society of Chemistry}}</ref> The ''Columbian Cyclopedia'' of 1897 defines "CHEMISTRY TOYS" as "mostly ]; recommended as illustrating to the young the rudiments of chemistry, but probably more dangerous than efficient for such use", listing a variety of hazardous examples.<ref name="Columbian">{{cite book|title=The Columbian Cyclopedia|date=1897|publisher=Garretson, Cox & Company|location=New York|url=http://catalog.hathitrust.org/Record/007958177|accessdate=2016-02-05}}</ref>

===Chemistry sets as toys===
] ]]

Beginning in the early 1900s, modern chemistry sets targeted younger people with the intention to popularize chemistry. In the United States, ] and the ] produced the best known sets. Although Porter and Gilbert were the largest American producers of chemistry sets, other manufacturers such as the ] corporation were also active.<ref name="Schmidt"/>

John J. Porter and his brother Harold Mitchell Porter began The Porter Chemical Company in 1914. Their initial purpose was to sell packaged chemicals, but they soon introduced kits. John researched the experiments, while Harold wrote the instruction manuals. Their earliest toys, under the "Chemcraft" trademark, were "chemical magic" sets, selling for less than one dollar (or about $25 in 2017<ref>{{cite web |url=https://data.bls.gov/cgi-bin/cpicalc.pl?cost1=1&year1=191401&year2=201711 |title = CPI Inflation Calculator}}</ref>). By the 1920s, they sold six different sets, the largest of which sold for $25 (or about $320 in 2017<ref>{{cite web |url=https://data.bls.gov/cgi-bin/cpicalc.pl?cost1=25.00&year1=192001&year2=201711 |title = CPI Inflation Calculator}}</ref>). Their range of toys broadened throughout the 1930s.<ref name="Schmidt"/> In the 1950s it was possible to buy toys featuring radioactive ores, such as the "]," which included a ] and ].<ref name="Kingson"/>

] chemistry set]]

] earned money by performing magic tricks while a medical student at Yale. He and John Petrie formed the Mysto Manufacturing Company (later the ]) in 1909, and began selling boxed magic sets. By 1917, they sold chemistry sets, which they produced through ], in spite of restrictions on materials. Robert Treat Johnson, noting the number of chemistry students at Yale whose interest in the science began with a chemistry set, argued the production of chemistry sets was a "patriotic duty."<ref name="Schmidt"/>

Toy companies promoted chemistry sets through advertising campaigns, the "Chemcraft Chemist Club" and its accompanying "Chemcraft Science Magazine", comic books, and essay contests such as Porter's "Why I want to be a scientist". The goal of attracting students to a potential career in chemistry was often explicit in the sets' naming and promotion.<ref name="Schmidt"/> Chemistry sets may have been the first American toys marketed toward parents with the goal of "improving" children for success in later life.<ref name="Kingson"/>

] ]]
] ]]
The target market for chemistry sets was almost exclusively boys, deemed "young men of science." However, during the 1950s, Gilbert introduced a set targeting girls. They sold the set in an attractive pink box, but the set identified girls as "laboratory assistants" or "lab technicians," not scientists.<ref name="Schmidt"/><ref name="Kingson">{{cite news|last1=Kingson|first1=Jennifer A.|title=A Brief History of Chemistry Sets: Practical to Career-Oriented to Just Plain Fun|url=https://www.nytimes.com/2012/12/25/science/a-brief-history-of-chemistry-sets.html?_r=0|accessdate=1 February 2016|work=New York Times|date=December 24, 2012}}</ref>

In 1971, a ] Environmental Test Kit was licensed by the ] and produced by ]. It included four air pollution tests and six water pollution tests for young environmental scientists.<ref name="Hasbro">{{cite web |title=Parker Brothers Johnny Horizon Environmental Test Kit |url=http://www.hasbro.com/common/instruct/JohnnyHorizonEnvironmentaltests.PDF |website=Hasbro |accessdate=28 September 2019}}</ref>
The Johnny Horizon Environmental Test Kit was marketed to both boys and girls.<ref name="Schaefer">{{cite news |last1=Schaefer |first1=Christine |title=Science at play: STEM-based exhibit shows off toys |url=http://www.greenfieldreporter.com/2017/08/24/science_at_play_stembased_exhibit_shows_off_toys/ |accessdate=28 September 2019 |work=Indianapolis Daily Reporter |date=August 23, 2017}}</ref>

Well-known chemistry sets from the United Kingdom include the 1960s and 1970s sets by Thomas Salter Science (produced in Scotland) and later ], then the ] sets through the 1970s and 1980s. Dekkertoys created a range of sets which were similar, complete with glass test tubes of dry chemicals.

==Decline==
Around the 1960s, safety concerns began to limit the range of materials and experiments available in chemistry sets. In the United States, the ] of 1960, the ] of 1969, the ], established in 1972, and the ] of 1976 all introduced new levels of regulation,<ref name="Cook"/> which led to the decline of chemistry sets' popularity during the 1970s and 1980s.<ref name="Monahan">{{cite news|last1=Monahan|first1=Maureen|title=The Dynamic History of the Toy Chemistry Set|url=http://mentalfloss.com/article/72452/dynamic-history-toy-chemistry-set|accessdate=1 February 2016|work=Mental Floss|date=December 29, 2015}}</ref> The A. C. Gilbert Company went out of business in 1967, and the Porter Chemical Company went out of business in 1984.<ref name="Cook"/>

Modern chemistry sets, with a few exceptions, tend to include a more restricted range of chemicals and simplified instructions. Many chemistry kits are single use, containing only the types and amounts of chemicals for a specific application.<ref>
{{cite journal
| first = Rosie
| last = DiVernieri
| title = The Chemistry Set: From Toy to Icon
| journal = Chemical Heritage Magazine
| volume = 24
| number = 1
| pages = 22
| publisher = ]
| year = 2006
}}</ref><ref name="Hix">{{cite news|last1=Hix|first1=Lisa|title=Cyanide, Uranium, and Ammonium Nitrate: When Kids Really Had Fun With Science|url=http://www.collectorsweekly.com/articles/cyanide-uranium-and-ammonium-nitrate-when-kids-really-had-fun-with-science/|accessdate=2 February 2016|work=Collectors Weekly|date=July 20, 2011}}</ref> Several authors note from the 1980s on, concerns about ] production, ], and ] have led to chemistry sets becoming increasingly bland and unexciting.<ref name="Zielinski">{{cite journal|last1=Zielinski|first1=Sarah|title=The Rise and Fall and Rise of the Chemistry Set|journal=Smithsonian|date=October 10, 2012|url=http://www.smithsonianmag.com/science-nature/the-rise-and-fall-and-rise-of-the-chemistry-set-70359831/|accessdate=1 February 2016}}</ref><ref>{{cite journal
| first = R.W.
| last = Von Korff
| title = Where Have the Chemistry Sets Gone?
| journal = The Midland Chemist
| volume = 43
| number = 5
| publisher = ]
| year = 2006
}}</ref><ref>
{{cite web
| first = Donna
| last = Fuscaldo
| title = The Grinch Who Stole the Chemistry Set
| publisher = Philosophy of Science Portal
| date = 2007-12-11
| url = http://philosophyofscienceportal.blogspot.com/2008/04/home-chemistlong-gone.html
| accessdate = 2011-02-16
}}</ref><ref name="Hudson">{{cite news|last1=Hudson|first1=Alex|title=Whatever happened to kids' chemistry sets?|url=https://www.bbc.com/news/magazine-19050342|accessdate=2016-02-02|work=BBC News|date=2012-08-01}}</ref>

In recent years, the chemistry set has been re-imagined as a self-study kit, typically offering students better equipment and more explanatory tutorial content. For example, ] offers a range of CHEM series chemistry sets targeting older children, culminating in the C3000 Kit, which includes a 172-page manual describing 387 experiments, although it does retail for almost US$300.<ref name="Cook"/><ref>{{cite web
| first = Norm
| last = Stanley
| title = Amateur Science, 1900-1950: A Historical Overview
| work = Proceedings and Presentations of the First Annual Citizen Science Conference
| publisher = ]
| date = 2002-07-12
| url = http://www.sas.org/E-Bulletin/2002-07-12/features/features.html
| accessdate = 2011-02-16
| archiveurl = https://web.archive.org/web/20080430111601/http://www.sas.org/E-Bulletin/2002-07-12/features/features.html
| archivedate = 2008-04-30
}}</ref>

== Contents ==
Typical contents found in chemistry sets, including equipment and chemicals, might include:

=== Equipment ===
* ]s of dry ]s * ]s of dry ]s
* ]s or ] made from various ]s, as copper, nickel or zinc * metal ]s, such as ], nickel or zinc
* metal filings, such as ]
* ] rods * ] rods
* a ] and ]s * a ] and weights
* a ] * a ]
* a ] * a ]
* a ] * a ]
* ]s * ]s
* ]s, ]s, ]s, ]s, ]s or other ]s * ]s, ]s, ]s, ]s, U-tubes or other reaction vessels
* ] ]s * ] ]s
* ]es * ]es
* ] and ] ] * ] and ] ]
* ]s, ]s and ]s * ]s, ]s and ]s
* an ] or other ] * an ] or other heat source
* a ] and ] * a ] and ]
* ] paper / ] * ] paper or ]
* ] * ]
* an ] * an ]

Chemicals commonly found in chemistry sets include:
=== Chemicals ===
* ]
{{columns-list|colwidth=15em|
* ]
* ]
* ] * ]
* ] * ]
* ] * ]
* ]
* ] * ]
* ] * ]
* ] * ]
* ] * ]
* ] * ]
* ] * ]
* ] * ]
* ] * ]
* ] * ]
* ] * ]
* ]
* ] * ]
* ]
* ] * ]
* ]
* ]
* ]
* ] * ]
* ] * Powdered ]
* ] * Powdered ]
* ] * ]
* ]
* ] * ]
* ] * ]
Line 47: Line 153:
* ] * ]
* ] * ]
* ]
* ] * ]
* ] * ]
* ]
* ]
}}


The experiments described in the instruction manual typically require a number of chemicals not shipped with the chemistry set, because they are common ]:
In recent years, chemistry-set manufacturers have been reluctant, because offear of ]lawsuits and police agencies looking for underground ] labs and ] bomb factories, to include many of the chemicals that are needed for "interesting" experiments. (In the past, a house fire started by an improvident teenager playing with chemicals was regarded as an ]; but now it is generally regarded as a ], and manufacturers of chemistry sets are usually (and often wrongly) assumed to have ]. In anticipation of such suits, chemistry-set makers removed chemicals thought to be dangerous—even in the hands of idiots—from chemistry sets. In the past, The ], ], and other anti-drug and antisterrorisn police agencies usually looked only in the wrong part of town, but meth labs and ] cells have been found even in respectable neighborhoods. {{fact}}
* ] (in ])
* ] ("baker's ammonia" or "salts of hartshorn")
* ] (in ]s)
* ] (in ])
* ] (])
* ] ("table salt")
Other chemicals, including strong acids, bases and oxidizers cannot be safely shipped with the set and others having a limited shelf life have to be purchased separately from a ]:
* ]
* ]
* ]
* ]


==See also==
The 12AngryMen Blog has published an explanation of the near demise of the chemistry set:
* ]
http://12angrymen.wordpress.com/2007/10/31/endangered-species-the-chemistry-set/
==External links==
*
]
]


==References==
*
{{Reflist|30em}}


==External links==
{{Commons category|Chemistry sets}}
*, ]


]
{{toy-stub}}
]

Latest revision as of 16:10, 17 August 2024

Educational toy For other uses, see Chemistry set (disambiguation).
External videos
video icon Education for a New Generation: The Chemistry Set in History, Science History Institute

A chemistry set is an educational toy allowing the user (typically a teenager) to perform simple chemistry experiments.

History

Forerunners

Natural Magick, Giambattista della Porta (1658).
Description of a portable chest of chemistry (1791).

The forerunners of the chemistry set were 17th century books on "natural magick", "which all excellent wise men do admit and embrace, and worship with great applause; neither is there any thing more highly esteemed, or better thought of, by men of learning." Authors, such as Giambattista della Porta, included chemical magic tricks and scientific puzzles along with more serious topics.

The earliest chemistry sets were developed in the 18th century in England and Germany to teach chemistry to adults. In 1791, Description of a portable chest of chemistry : or, Complete collection of chemical tests for the use of chemists, physicians, mineralogists, metallurgists, scientific artists, manufacturers, farmers, and the cultivators of natural philosophy by Johann Friedrich August Göttling, translated from German, was published in English. Friedrich Accum of London, England also sold portable chemistry sets and materials to refill them. Primarily used for training druggists and medical students, they could also be carried and used in the field.

Scientific kits also attracted well-educated members of the upper class who enjoyed experimenting and demonstrating their results. James Woodhouse of Philadelphia presented a Young Chemist's Pocket Companion (1797) with an accompanying portable laboratory that specifically targeted ladies and gentlemen. Jane Marcet's books on chemistry helped to popularize chemistry as a well-to-do pastime for both men and women.

Griffin’s Chemical Laboratory, Glasgow (ca.1850).

Beginning in the late 1850s, John J. Griffin & Sons sold a line of "chemical cabinets", eventually offering 11 categories. These were marketed primarily to adults including elementary school teachers as well as students at the Royal Naval College, the Royal Agricultural Society, and the universities of Oxford and Cambridge.

From the mid to the late 1800s, in England, magic and illusion toys enabled children to make their own fireworks, create disappearing inks, and cause changes in color, tricks that were mostly chemically based. The Columbian Cyclopedia of 1897 defines "CHEMISTRY TOYS" as "mostly pyrotechnic; recommended as illustrating to the young the rudiments of chemistry, but probably more dangerous than efficient for such use", listing a variety of hazardous examples.

Chemistry sets as toys

Porter Chemcraft Senior Set, 1957, at the Science History Institute

Beginning in the early 1900s, modern chemistry sets targeted younger people with the intention to popularize chemistry. In the United States, Porter Chemical Company and the A. C. Gilbert Company produced the best known sets. Although Porter and Gilbert were the largest American producers of chemistry sets, other manufacturers such as the Skilcraft corporation were also active.

John J. Porter and his brother Harold Mitchell Porter began The Porter Chemical Company in 1914. Their initial purpose was to sell packaged chemicals, but they soon introduced kits. John researched the experiments, while Harold wrote the instruction manuals. Their earliest toys, under the "Chemcraft" trademark, were "chemical magic" sets, selling for less than one dollar (or about $25 in 2017). By the 1920s, they sold six different sets, the largest of which sold for $25 (or about $320 in 2017). Their range of toys broadened throughout the 1930s. In the 1950s it was possible to buy toys featuring radioactive ores, such as the "Gilbert U-238 Atomic Energy Laboratory," which included a Geiger counter and cloud chamber.

A 1940s Gilbert chemistry set

Alfred Carlton Gilbert earned money by performing magic tricks while a medical student at Yale. He and John Petrie formed the Mysto Manufacturing Company (later the A. C. Gilbert Company) in 1909, and began selling boxed magic sets. By 1917, they sold chemistry sets, which they produced through World War II, in spite of restrictions on materials. Robert Treat Johnson, noting the number of chemistry students at Yale whose interest in the science began with a chemistry set, argued the production of chemistry sets was a "patriotic duty."

Toy companies promoted chemistry sets through advertising campaigns, the "Chemcraft Chemist Club" and its accompanying "Chemcraft Science Magazine", comic books, and essay contests such as Porter's "Why I want to be a scientist". The goal of attracting students to a potential career in chemistry was often explicit in the sets' naming and promotion. Chemistry sets may have been the first American toys marketed toward parents with the goal of "improving" children for success in later life.

Gilbert Lab Technician Set for Girls, 1958, at the Science History Institute
Johnny Horizon Environmental Test Kit, 1971, at the Science History Institute

The target market for chemistry sets was almost exclusively boys, deemed "young men of science." However, during the 1950s, Gilbert introduced a set targeting girls. They sold the set in an attractive pink box, but the set identified girls as "laboratory assistants" or "lab technicians," not scientists.

In 1971, a Johnny Horizon Environmental Test Kit was licensed by the U. S. Department of the Interior and produced by Parker Brothers. It included four air pollution tests and six water pollution tests for young environmental scientists. The Johnny Horizon Environmental Test Kit was marketed to both boys and girls.

Well-known chemistry sets from the United Kingdom include the 1960s and 1970s sets by Thomas Salter Science (produced in Scotland) and later Salter Science, then the "MERIT" sets through the 1970s and 1980s. Dekkertoys created a range of sets which were similar, complete with glass test tubes of dry chemicals.

Decline

Around the 1960s, safety concerns began to limit the range of materials and experiments available in chemistry sets. In the United States, the Federal Hazardous Substances Labeling Act of 1960, the Toy Safety Act of 1969, the Consumer Product Safety Commission, established in 1972, and the Toxic Substances Control Act of 1976 all introduced new levels of regulation, which led to the decline of chemistry sets' popularity during the 1970s and 1980s. The A. C. Gilbert Company went out of business in 1967, and the Porter Chemical Company went out of business in 1984.

Modern chemistry sets, with a few exceptions, tend to include a more restricted range of chemicals and simplified instructions. Many chemistry kits are single use, containing only the types and amounts of chemicals for a specific application. Several authors note from the 1980s on, concerns about illegal drug production, terrorism, and legal liability have led to chemistry sets becoming increasingly bland and unexciting.

In recent years, the chemistry set has been re-imagined as a self-study kit, typically offering students better equipment and more explanatory tutorial content. For example, Thames & Kosmos offers a range of CHEM series chemistry sets targeting older children, culminating in the C3000 Kit, which includes a 172-page manual describing 387 experiments, although it does retail for almost US$300.

Contents

Typical contents found in chemistry sets, including equipment and chemicals, might include:

Equipment

Chemicals

The experiments described in the instruction manual typically require a number of chemicals not shipped with the chemistry set, because they are common household chemicals:

Other chemicals, including strong acids, bases and oxidizers cannot be safely shipped with the set and others having a limited shelf life have to be purchased separately from a drug store:

See also

References

  1. ^ Deckard, Michael Funk; Losonczi, Péter (2010). Philosophy begins in wonder : an introduction to early modern philosophy, theology, and science. Eugene, Or.: Pickwick Publications. pp. 55–57. ISBN 978-1556357824. Retrieved 2016-02-04.
  2. Macrakis, Kristie (2014). Prisoners, lovers, & spies : the story of invisible ink from Herodotus to al-Qaeda. New Haven: Yale University Press. ISBN 9780300179255.
  3. Goettling, Johann Friedrich August (1791). Description of a portable chest of chemistry : or, Complete collection of chemical tests for the use of chemists, physicians, mineralogists, metallurgists, scientific artists, manufacturers, farmers, and the cultivators of natural philosophy / invented by J.F.A. Gottling; translated from the original German. Vollständiges chemisches Probir-cabinet. English. London: Printed for C. and G. Kearsley.
  4. ^ Cook, Rosie (2010). "Chemistry at Play". Chemical Heritage Magazine. 28 (1): 20–25. Retrieved 2018-03-23.
  5. ^ Schmidt, James M. (Spring 2001). "The Chemistry Set: Chemistry's legacy of the home laboratory". Chemical Heritage Magazine. 19 (1): 12–13, 34–36.
  6. Nicholls, Henry. "The chemistry set generation". Royal Society of Chemistry. Retrieved 2016-02-01.
  7. The Columbian Cyclopedia. New York: Garretson, Cox & Company. 1897. Retrieved 2016-02-05.
  8. "CPI Inflation Calculator".
  9. "CPI Inflation Calculator".
  10. ^ Kingson, Jennifer A. (December 24, 2012). "A Brief History of Chemistry Sets: Practical to Career-Oriented to Just Plain Fun". New York Times. Retrieved 1 February 2016.
  11. "Parker Brothers Johnny Horizon Environmental Test Kit" (PDF). Hasbro. Retrieved 28 September 2019.
  12. Schaefer, Christine (August 23, 2017). "Science at play: STEM-based exhibit shows off toys". Indianapolis Daily Reporter. Retrieved 28 September 2019.
  13. Monahan, Maureen (December 29, 2015). "The Dynamic History of the Toy Chemistry Set". Mental Floss. Retrieved 1 February 2016.
  14. DiVernieri, Rosie (2006). "The Chemistry Set: From Toy to Icon". Chemical Heritage Magazine. 24 (1). Chemical Heritage Foundation: 22.
  15. Hix, Lisa (July 20, 2011). "Cyanide, Uranium, and Ammonium Nitrate: When Kids Really Had Fun With Science". Collectors Weekly. Retrieved 2 February 2016.
  16. Zielinski, Sarah (October 10, 2012). "The Rise and Fall and Rise of the Chemistry Set". Smithsonian. Retrieved 1 February 2016.
  17. Von Korff, R.W. (2006). "Where Have the Chemistry Sets Gone?". The Midland Chemist. 43 (5). American Chemical Society.
  18. Fuscaldo, Donna (2007-12-11). "The Grinch Who Stole the Chemistry Set". Philosophy of Science Portal. Retrieved 2011-02-16.
  19. Hudson, Alex (2012-08-01). "Whatever happened to kids' chemistry sets?". BBC News. Retrieved 2016-02-02.
  20. Stanley, Norm (2002-07-12). "Amateur Science, 1900-1950: A Historical Overview". Proceedings and Presentations of the First Annual Citizen Science Conference. Society for Amateur Scientists. Archived from the original on 2008-04-30. Retrieved 2011-02-16.

External links

Categories: