When wood chips are burned, are the ashes and the smoke that result still wood?
No, the ashes and smoke are not wood. What kind of change is wood chips burning? How do you know? The wood chips have undergone a chemical change. You know because of the smell, smoke, light, and the different kind of materials. CHEMICAL PROPERTIES (pg. 138) This characteristic, called flammability , is a chemical property of wood. A CHEMICAL PROPERTY is… any characteristic that gives a substance the ability to undergo a chemical change. Some substances undergo chemical change when they are exposed to light . Name three things that have a chemical property of light sensitivity. Three or more things that have the chemical property of light sensitivity are vitamins, hydrogen peroxide, drugs, and film. *** Read Figure 4 – 14 (pg. 138) *** FREE-WRITE Explain the differences between physical and chemical changes? (Include examples of each kind of change.) SKILL BUILDER DIRECTIONS: Observe a burning candle and record your observations below. OBSERVATIONS: (What happened to the different pa
