APchemchp1suppprob

APchemchp1suppprob - AP Chemistry Chapter 1 Supplemental...

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AP Chemistry Chapter 1 Supplemental Problems Name: ______________________________________________ Date: __________________ Period: _____ 1. Which of the following mixtures are homogeneous and which are heterogeneous? (7) a. gasoline b. raisin pudding c. Italian salad dressing d. a cola drink 2. In each case, decide whether the underlined property is a physical or chemical property. (12) a. The normal color of elemental bromine is orange. b. Iron turns to rust in the presence of air and water. c. Hydrogen can explode when ignited in air. d. The density of titanium metal is 4.5 g/cm 3 e. Tin metal melts at 505 K f. Chlorophyll, a plant pigment, is green. 3. Which of the following describe a chemical change, and which a physical change? (12) a. Sheep are sheared and the wool is spun into yarn. b. A cake is baked from a mixture of flour, baking powder, sugar, eggs, shortening, and milk. c. Milk turns sour when left out of the refrigerator for many hours. d. Silkworms feed on mulberry leaves and produce silk. e. An overgrown lawn is manicured by mowing it with a lawn mower. 4. Suggest a way to determine whether the colorless liquid in a beaker is water. If it is water, does it contain dissolved salt? How could you discover whether salt is dissolved in the water? (12) 5. A piece of turquoise is a blue-green solid, and has a density of 2.65 g/cm 3 and a mass of 2.5 g. (14) a. Which of these observations are qualitative and which are quantitative? b. Which of these observations are extensive and which
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APchemchp1suppprob - AP Chemistry Chapter 1 Supplemental...

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