Michael Faraday's The Chemical History of a Candle

Recommendations

Info

Guide to Lecture Five 103 Faraday uses this apparatus to show that human breath contains CO 2 . a Faraday draws in a breath through the limewater: he observes no change in the limewater. b He rotates the apparatus and exhales into the limewater: it now turns cloudy. Limewater turns cloudy, as he showed in an earlier lecture, when CO 2 gas is bubbled through it.
104 The Chemistry History of a Candle Sugar, for example, is a carbon containing compound. The formula for table sugar is C 12 H 22 O 11 , which can be written as C 12 (H 2 O) 11 , showing us why sugar is called a carbohydrate—that is, containing carbon, hydrogen and oxygen, where the hydrogen and oxygen are in a 2:1 ratio as in water. The lecture demonstrates that sugar contains carbon by adding sulfuric acid to it. In essence the sulfuric acid removes the water, leaving behind a black tower of carbon. The carbon in sugars that we eat combines with oxygen that we breathe in the process of respiration “making us like candles.” Table sugar has the formula C 12 H 22 O 11 . Faraday notes that this can be rewritten as C 12 (H 2 O) 11 , which shows us why sugar is called a carbohydrate: it contains carbon, hydrogen and oxygen, where the hydrogen and oxygen are in a 2:1 ratio as in water.
Page 2 and 3:
Michael Faraday’s T he Chemic al
Page 4 and 5:
Contents Lectures Preface • vii I
Page 6:
Preface In this companion book to o
Page 9 and 10:
2 The Chemistry History of a Candle
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
10 The Chemistry History of a Candl
Page 20 and 21:
Guide to Lecture One A CANDLE: SOUR
Page 22 and 23:
Guide to Lecture One 15 So, the hea
Page 24 and 25:
Guide to Lecture One 17 This action
Page 26 and 27:
Guide to Lecture One 19 is delayed
Page 28 and 29:
Lecture One A CANDLE: SOURCES OF IT
Page 30 and 31:
Lecture One 23 that nicely-formed e
Page 32 and 33:
Lecture One 25 before long it will
Page 34 and 35:
Lecture One 27 part above. Now, let
Page 36:
Lecture One 29 is only able to take
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Page 45 and 46:
Page 48 and 49:
Lecture Two BRIGHTNESS OF THE FLAME
Page 50 and 51:
Lecture Two 43 through the tube to
Page 52 and 53:
Lecture Two 45 larger wicks, we mus
Page 54 and 55:
Lecture Two 47 of the filings I hav
Page 56 and 57:
Lecture Two 49 can judge for yourse
Page 58 and 59:
Guide to Lecture Three PRODUCTS OF
Page 60 and 61: Guide to Lecture Three 53 and water
Page 62 and 63: Guide to Lecture Three 55 us water,
Page 64 and 65: Guide to Lecture Three 57 that ther
Page 66 and 67: Lecture Three PRODUCTS OF COMBUSTIO
Page 68 and 69: Lecture Three 61 always the same, e
Page 70 and 71: Lecture Three 63 inside by the cond
Page 72 and 73: Lecture Three 65 to cause the water
Page 74 and 75: Lecture Three 67 merely the ordinar
Page 76: Lecture Three 69 burning, not merel
Page 79 and 80: 72 The Chemistry History of a Candl
Page 107 and 108: 100 The Chemistry History of a Cand
Page 109: 102 The Chemistry History of a Cand
show all

Michael Faraday's The Chemical History of a Candle

Create successful ePaper yourself

Delete template?

Save as template?