Candle Lab Procedures: 1. Observe the unlit candle. 2. Record physical properties of the unlit candle (color, texture, mass, other) 3. PUT YOUR GOGGLES ON 4. Light the candle. 5. Record physical and chemical properties in 5 MIN. 6. Make a DRAWING (while observing the candle) 7. Record physical properties of the lit candle. 8. CLEAN-UP: THROW AWAY THE MATCH AND CANDLE CONCLUSION: answer in a complete sentence The difference between a physical and chemical property is …

Candle wax and oxygen produce carbon dioxide and water vapor and some carbon (soot)

1. Wick 400° C ° C ° C ° C ° C 6. Candle 40-50° C 7. Melted wax 60° C

Candle burning on Earth/burning in space

Chemical or Physical Change?

Sunday afternoon Mrs. Gardner decided to walk around downtown. She walked into Marble Slab and purchased a pistachio ice cream cone with sprinkles. It was quite hot outside and the ice cream began to melt as she was walked briskly down the street. Physical : Solid-Liquid (State of Matter)

Chemical or Physical Change? Mr. McDowell went camping in the mountains over the weekend. He invited all of his closest friends and decided to roast marshmallows over the open fire. Mr. McDowell loves to talk and left his marshmallow in the fire too long. After blowing out the flame, Mr. McDowell’s marshmallow was burned. Chemical Change

Chemical or Physical Change? Ms. Shealy wanted to show the students what happened when one mixes baking soda and vinegar. Ms. Shealy has really bad luck and when the balloon filled up with carbon dioxide, it burst. Chemical Change Describe the signs that gave the answer away. Gas production, Temperature Change

Chemical or Physical Change? Mrs. Johnston missed her young bright students at Mauldin Middle. Sometimes she chuckles to herself when she recollects the past. She smiles as she recalls the urge to pull that rubber band back and let it fly toward the crazy kids! Physical Change : Change in size/shape

Chemical or Physical Change? Mrs. Sanders was planning a Halloween party for all the political leaders of the world. She decided an excellent addition to the party would be to use dry ice to give a daunting effect. Physical Change What is this specific change called? Sublimation : Solid to Gas

Chemical or Physical Change? Mrs. Pearson wanted all students to have free beverages during STAR day. It was very arduous buying so many Pepsi products and candy, so Mrs. Pearson decided to make Kool-aid for everyone! Physical Change Use scientific terms to describe what Mrs. Pearson created. Mixture

Chemical or Physical Change? Mrs. Byrd needed more chalk for her classroom. She liked to write all assignments on the board for the children and also had an odd craving for the taste of chalk. She met with the science teachers and figured out how to create chalk by combining carbon dioxide and limewater. Chemical Change

Chemical or Physical Change? Jeff loved to ride his bicycle. Unfortunately, he left his bicycle in the yard during a torrential down pour. He was terribly upset when he found out that his bike had rusted. Chemical Change

Chemical or Physical Change? Mrs. Lee loves red candles that, of course, match her red Harley. She wanted to find a red candle to place beside her festive pumpkin. During the Halloween season, she let’s them burn for exactly 3 minutes and 47 seconds. After she blows the candle out, she watches in awe as the candle wax returns to its original state. Physical : Liquid to Solid