How do we really know how a candle works?

Page 1 <img data-url='document/how-do-we-really-know-how-a-candle-works.html?page=1' data-page='1' class='cut-thumb lazyload' alt='Page 1: How do we really know how a candle works?' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader036.cupdf.com/reader036/viewer/2022062310/56815f33550346895dce0350/html5/thumbnails/1.jpg' width='140' height='200' /> Page 2 <img data-url='document/how-do-we-really-know-how-a-candle-works.html?page=2' data-page='2' class='cut-thumb lazyload' alt='Page 2: How do we really know how a candle works?' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader036.cupdf.com/reader036/viewer/2022062310/56815f33550346895dce0350/html5/thumbnails/2.jpg' width='140' height='200' /> How do we really know how a candle works?

Goal: Be able to… 1) use the scientific method2) identify a physical vs. a chemical change

Page 3 <img data-url='document/how-do-we-really-know-how-a-candle-works.html?page=3' data-page='3' class='cut-thumb lazyload' alt='Page 3: How do we really know how a candle works?' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader036.cupdf.com/reader036/viewer/2022062310/56815f33550346895dce0350/html5/thumbnails/3.jpg' width='140' height='200' /> What is a candle made of?

1)

2)

Page 4 <img data-url='document/how-do-we-really-know-how-a-candle-works.html?page=4' data-page='4' class='cut-thumb lazyload' alt='Page 4: How do we really know how a candle works?' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader036.cupdf.com/reader036/viewer/2022062310/56815f33550346895dce0350/html5/thumbnails/4.jpg' width='140' height='200' /> What does a candle look like…

• Before burning?

• After burning?

• After extinguishing?

Page 5 <img data-url='document/how-do-we-really-know-how-a-candle-works.html?page=5' data-page='5' class='cut-thumb lazyload' alt='Page 5: How do we really know how a candle works?' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader036.cupdf.com/reader036/viewer/2022062310/56815f33550346895dce0350/html5/thumbnails/5.jpg' width='140' height='200' /> What happens when a candle burns?

• Physical change

• Chemical change

Page 6 <img data-url='document/how-do-we-really-know-how-a-candle-works.html?page=6' data-page='6' class='cut-thumb lazyload' alt='Page 6: How do we really know how a candle works?' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader036.cupdf.com/reader036/viewer/2022062310/56815f33550346895dce0350/html5/thumbnails/6.jpg' width='140' height='200' /> Okay, so you can read a book – where’s your evidence?

• Experiment 1

Page 7 <img data-url='document/how-do-we-really-know-how-a-candle-works.html?page=7' data-page='7' class='cut-thumb lazyload' alt='Page 7: How do we really know how a candle works?' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader036.cupdf.com/reader036/viewer/2022062310/56815f33550346895dce0350/html5/thumbnails/7.jpg' width='140' height='200' /> Experiment 2

Page 8 <img data-url='document/how-do-we-really-know-how-a-candle-works.html?page=8' data-page='8' class='cut-thumb lazyload' alt='Page 8: How do we really know how a candle works?' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader036.cupdf.com/reader036/viewer/2022062310/56815f33550346895dce0350/html5/thumbnails/8.jpg' width='140' height='200' /> Experiment 3

Experiment 4

Page 9 <img data-url='document/how-do-we-really-know-how-a-candle-works.html?page=9' data-page='9' class='cut-thumb lazyload' alt='Page 9: How do we really know how a candle works?' loading='lazy' src='data:image/gif;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+P+/HgAFhAJ/wlseKgAAAABJRU5ErkJggg==' data-src='https://reader036.cupdf.com/reader036/viewer/2022062310/56815f33550346895dce0350/html5/thumbnails/9.jpg' width='140' height='200' /> Experiment 5

(Units!!)

How do we really know how a candle works?

Documents

candle burns

scientific method2

book wheres