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.“(Lavoisier 1794, xxiii) Remarkably, Lavoisier is already using the term ‘atom’, even though he is not using an atomic theory. However, this notion of element that gets evident in this quotation [...] more complex. Despite this criticism, the stoichiometric laws were used by chemists, and some of them used fractional numbers to express the ratio of masses – indi- cating that there was no inseparable [...] discussions amongst the chem- ists who accepted the atom as a useful hypoth- esis, the physicists started to use the atom as a real object with explanatory power. Particular- ly the developing science

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• Lavoisier and the conservation of mass

chemical system, together with making experiments quantitative and using extremely sensitive balances in order to ana- lyze chemical reactions not only in terms of substances that combine to new substances [...] approach, Dalton had developed new insights that he was about to use in his teaching for the first time. He straightened and opened the door to his classroom. As usual, there were the students sitting [...] the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

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• Dalton and the atoms

. He constructed barom- eters and other scientific instruments used in this field. He began to keep a diary where he entered his weather observations. During his life he made more than 200,000 observations [...] must exist to explain this phenomenon and conducted an analysis using nitrous oxide. This time, he care- fully examined three gases, and found that the ra- tio of the mass of nitrogen in relation to [...] the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

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• Dalton and the atoms
• Lavoisier and the conservation of mass

a couple walking from their breakfast table to a room which they used as a chemical laboratory. They were evidently wealthy, their clothing as well as their house identi- fied them as being members of [...] water again, you conclude that nothing else is involved. Let me use an analogy: For collecting taxes, you are very deli- cate in bookkeeping every item that enters the town of Paris. Even more, you [...] the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein

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• Lavoisier and the conservation of mass

the authors, and the Commission cannot be held responsible for any use which may be made of the information contained there in.

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• Lavoisier and the conservation of mass

experiment about the oxidation of the metals, the quantitative method used, …) ……………………………………………………………………………………………………………… ……………………………………………………………………………………………………………… …………………………………………………………………………………………………………… [...] of knowledge in chemistry is presented in the above picture. By using information from the narration you have just watched, please work cooperatively and prepare a story about this specific development [...] the authors, and the Commission cannot be held responsible for any use which may be made of the information contained there in.

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• Lavoisier and the conservation of mass

4 The publication of the recipe included the cost for the fuel used in the kitchen and the wages of the cook and the clerks who served the soup to the recipients (Thompson 1804, pp. 274 & 276). 5 [...] much in common with the soups originally devised by Thompson for use in the soup kitch- ens of the workhouses. perimental setup used. It shows Santorio sitting on a scale (a so-called weighing chair) [...] air,” strictly following the phlogiston the- ory. Lavoisier used his newly found knowledge to in- clude oxygen as part of a chemical reaction and was able to extend his theory to the effects of

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• Eijkman and Beri-Beri
• Lind and scurvy
• Liebig and nutrition
• Rumford and nutrition
• Antoine Laurent de Lavoisier and respiration
• Dr. Andreas Junk
• Dr. Andreas Junk

the authors, and the Commission cannot be held responsible for any use which may be made of the information contained there in.

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• Eijkman and Beri-Beri

are stored in the body, and the water-soluble (B, C) which are used by the body but their remnants are excreted. All vitamins are fairly well absorbed, while toxicity risk occurs mainly by excessive [...] … ……………………………………………………………………………………………………………… …………………… Activity 4 Using the list of ideas that describe the characteristics of science and the ways it develops, try to locate and write these ideas in the [...] the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein.

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• Eijkman and Beri-Beri

prisoners in Javanese prisons, Eijkman managed to find the cure. Using the findings of Eijkman’s study, scientists were able to isolate a nutrient called thiamin, also known as vitamin B1. Eijkman had, [...] he had one son, Pieter Hendrik. For researching the disease, he used chickens in his experiments, injecting some of them with bacteria thought to cause beriberi, while leaving others un- treated. He [...] the authors, and the Commission cannot be held responsible for any use which may be made of the information contained therein. 2 Biography: Christiaan Eijkman Storytelling Teaching Model: http://

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• Eijkman and Beri-Beri