Which of the following is correct for the material pictured?

1. Which of the following is correct for the material pictured? • A gaseous pure substance • A liquid pure substance • A gaseous mixture • A solid mixture • None of the above

2. Which of the following is correct for the material pictured? • A gaseous pure substance • A liquid pure substance • A gaseous mixture • A solid mixture • None of the above

3. Which of the following is a pure substance? • Sweat • Beef stew • Coffee • Apple juice • Ice

4. Which of the following is a pure substance? • Sweat • Beef stew • Coffee • Apple juice • Ice

5. Which of the following is a heterogeneous mixture? • Seawater • Chicken soup • Coffee • Hydrogen peroxide • Ice

6. Which of the following is a heterogeneous mixture? • Seawater • Chicken soup • Coffee • Hydrogen peroxide • Ice

7. Which of the following mixtures is separated best by decanting? • Two aqueous liquids • A solid and a liquid • A volatile liquid and a non-volatile liquid • Two solids

8. Which of the following mixtures is separated best by decanting? • Two aqueous liquids • A solid and a liquid • A volatile liquid and a non-volatile liquid • Two solids

9. Which of the following represents a chemical change? • Freezing water to make ice cubes • Dry ice evaporating at room temperature • Toasting a piece of bread • Dissolving sugar in hot coffee • Crushing an aluminum can

10. Which of the following represents a chemical change? • Freezing water to make ice cubes • Dry ice evaporating at room temperature • Toasting a piece of bread • Dissolving sugar in hot coffee • Crushing an aluminum can

11. Which of the following is a chemical property? • Squeezing oranges to make orange juice • Melting butter for popcorn • Separating sand from gravel • Hydrogen peroxide decomposing to waterand oxygen • Ozone as a gas at room temperature

12. Which of the following is a chemical property? • Squeezing oranges to make orange juice • Melting butter for popcorn • Separating sand from gravel • Hydrogen peroxide decomposing to waterand oxygen • Ozone as a gas at room temperature

13. Which of the following would NOT be considered an intensive property describing an unknown sample? • It is a solid at 25 °C. • It has a density of 1.38 g/cm3. • It melts at 62.0 ° C. • It has a volume of 0.52 cm3. • It is shiny.

14. Which of the following would NOT be considered an intensive property describing an unknown sample? • It is a solid at 25 °C. • It has a density of 1.38 g/cm3. • It melts at 62.0 ° C. • It has a volume of 0.52 cm3. • It is shiny.

15. The state of matter in which molecules are widely spaced is a solid. a liquid. a gas. elemental. molecular.

16. The state of matter in which molecules are widely spaced is a solid. a liquid. a gas. elemental. molecular.

17. Which of the following is an example of an amorphous solid? Diamond Salt Gold Water Soot

18. Which of the following is an example of an amorphous solid? Diamond Salt Gold Water Soot

19. Which of the following is a pure substance? Sodium Milk Blood Saline solution Stainless steel

20. Which of the following is a pure substance? Sodium Milk Blood Saline solution Stainless steel

21. Which of the following is an element? Sugar Salt Brass Chlorine Air

22. Which of the following is an element? Sugar Salt Brass Chlorine Air

23. Which of the following is a mixture? Seawater Iron ore Air Milk All of the above

24. Which of the following is a mixture? Seawater Iron ore Air Milk All of the above

25. Boiling point is an example of a physical change. chemical change. quantitative property. physical property. chemical property.

26. Boiling point is an example of a physical change. chemical change. quantitative property. physical property. chemical property.

27. How would you classify wine? Pure substance—compound Pure substance—element Mixture—homogeneous Mixture—heterogeneous Pure substance—homogenous

28. How would you classify wine? Pure substance—compound Pure substance—element Mixture—homogeneous Mixture—heterogeneous Pure substance—homogenous

29. Which of the following is NOT a chemical property? The density of a liquid The ability of iron to rust Flammability of gasoline Reactivity of acids with metals All of these are chemical properties.

30. Which of the following is NOT a chemical property? The density of a liquid The ability of iron to rust Flammability of gasoline Reactivity of acids with metals All of these are chemical properties.

31. Which of the following is a physical change? Burning butane Barbequing a steak Decomposing water into hydrogen and oxygen gases Breaking a piece of glass Baking a cake

32. Which of the following is a physical change? Burning butane Barbequing a steak Decomposing water into hydrogen and oxygen gases Breaking a piece of glass Baking a cake

33. Which of the following statements is FALSE? The freezing of water is a physical change. The conversion of compounds into elements is a physical change. Combining sodium metal and chlorine gas to form sodium chloride is a chemical change. Photosynthesis is an example of a chemical change. Distilling alcohol from water is a physical change.

34. Which of the following statements is FALSE? The freezing of water is a physical change. The conversion of compounds into elements is a physical change. Combining sodium metal and chlorine gas to form sodium chloride is a chemical change. Photosynthesis is an example of a chemical change. Distilling alcohol from water is a physical change.

35. A solution is a(n) element. compound. homogenous mixture. heterogeneous mixture. pure substance.

36. A solution is a(n) element. compound. homogenous mixture. heterogeneous mixture. pure substance.

37. Matter can be defined as a substance that cannot be broken down any further. anything that has mass and occupies space. a substance composed of two or more elements. a homogeneous mixture. None of the above

38. Matter can be defined as a substance that cannot be broken down any further. anything that has mass and occupies space. a substance composed of two or more elements. a homogeneous mixture. None of the above

39. Which of the following changes is endothermic? Water evaporates. Water freezes. Butane gas burns. Steam condenses. None of the above

40. Which of the following changes is endothermic? Water evaporates. Water freezes. Butane gas burns. Steam condenses. None of the above

41. Which of the following is a chemical change? Sugar is dissolved in water. Copper metal is rolled into wire. Ice melts. All of the above None of the above

42. Which of the following is a chemical change? Sugar is dissolved in water. Copper metal is rolled into wire. Ice melts. All of the above None of the above