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PS CH 2 Test (14-15)
  • 1. Salty water is
A) a heterogeneous mixture.
B) an element.
C) a homogenus mixture.
D) a compound.
  • 2. Sand water is
A) a homogeneous mixture.
B) a heterogeneous mixture.
C) a compound.
D) an element.
  • 3. Oxygen is
A) a heterogeneous mixture.
B) a homogeneous mixture.
C) a compound.
D) an element.
  • 4. Vegetable soup is
A) a heterogeneous mixture.
B) a homogeneous mixture.
C) a compound.
D) an element.
  • 5. Gatorade is
A) a heterogeneous mixture.
B) an element.
C) a compound.
D) a homogeneous mixture.
  • 6. Iron is
A) an element.
B) a compound.
C) a homogeneous mixture.
D) a heterogeneous mixture.
  • 7. Sodium benzoate is
A) a homogeneous mixture.
B) a compound.
C) a heterogeneous mixture.
D) an element.
  • 8. Stainless steel is
A) an element.
B) a compound.
C) a heterogeneous mixture.
D) a homogeneous mixture.
  • 9. A bag of trail mix is
A) an element.
B) a homogeneous mixture.
C) a heterogeneous mixture.
D) a compound.
  • 10. An aquarium with a large variety of fish is
A) a compound.
B) a heterogeneous mixture.
C) a homogeneous mixture.
D) an element.
  • 11. Cadmium is
A) a heterogeneous.
B) an element.
C) a compound.
D) a homogeneous mixture.
  • 12. Neon is
A) a compound.
B) a heterogeneous mixture.
C) an element.
D) a homogeneous mixture.
  • 13. Air is
A) a heterogeneous mixture.
B) an element.
C) a homogeneous mixture.
D) a compound.
  • 14. Dihydrogen monoxide is
A) a compound.
B) an element.
  • 15. Bronze is
A) a homogeneous mixture.
B) a compound.
C) an element.
D) a heterogeneous mixture.
  • 16. Water that is cloudy with fine silt
A) evaporation is the best method for separating the parts
B) using a sieve is the best method for separating the parts
C) filtration is the best method for separating the parts
D) distillation is the best method for separating the parts.
  • 17. Water and alcohol
A) decanting is the best method for separating the parts
B) using a sieve is the best method for separating the parts
C) distillation is the best method for separating the parts.
D) evaporation is the best method for separating the parts
  • 18. Colors that make up black ink
A) decanting is the best method for separating the parts
B) using a sieve is the best method for separating the parts
C) chromatography
D) distillation is the best method for separating the parts.
  • 19. Coffee grounds and water
A) filtration is the best method for separating the parts
B) using a sieve is the best method for separating the parts
C) decanting is the best method for separating the parts
D) distillation is the best method for separating the parts.
  • 20. Cat poo from the nasty litter box
A) pick out the parts
B) decanting is the best method for separating the parts
C) filtration is the best method for separating the parts
D) distillation is the best method for separating the parts.
  • 21. Oil and heavy rocks
A) evaporation is the best method for separating the parts
B) decanting is the best method for separating the parts
C) distillation is the best method for separating the parts.
D) chromatography
  • 22. Salt and water
A) decanting is the best method for separating the parts
B) evaporation is the best method for separating the parts
C) distillation is the best method for separating the parts.
D) using a sieve is the best method for separating the parts
  • 23. Small pieces of dirt from large grapes
A) distillation is the best method for separating the parts.
B) using a sieve is the best method for separating the parts
C) decanting is the best method for separating the parts
D) chromatography
  • 24. Density
A) is a physical property.
B) is a chemical property.
  • 25. Flammability
A) is a physical property.
B) is a chemical property.
  • 26. Mass
A) is a physical property.
B) is a chemical property.
  • 27. Color
A) is a physical property.
B) is a chemical property.
  • 28. The ability to react with water
A) is a physical property.
B) is a chemical property.
  • 29. The ability to react with oxygen
A) is a chemical property.
B) is a physical property.
  • 30. Weight
A) is a chemical property.
B) is a physical property.
  • 31. Conductivity
A) is a chemical property.
B) is a physical property.
  • 32. Malleability
A) is a physical property.
B) is a chemical property.
  • 33. Ductility
A) is a physical property.
B) is a chemical property.
  • 34. Reacts with any other substance
A) is a chemical property.
B) is a physical property.
  • 35. Magnetic
A) is a chemical property.
B) is a physical property.
  • 36. Brittleness
A) is a physical property.
B) is a chemical property.
  • 37. The ability to react with acid
A) is a physical property.
B) is a chemical property.
  • 38. Texture
A) is a physical property.
B) is a chemical property.
  • 39. Which one of these indicates a chemical change has occurred?
A) Sand sinks to the bottom of a glass of water.
B) Bubbles are produced when vinegar is mixed with baking soda.
C) The red T-shirt fades to pink when washed in hot water.
D) An empty coke can crumbles when it is stepped upon.
  • 40. Which one of these indicates a chemical change has occurred?
A) A tan colored wall is turned blue when it is painted with blue paint.
B) Snow falls from the sky when the temperature drops to 20 degrees Farenheit.
C) The wax in a birthday candle burns.
D) The surface of an electric stove gets hot when the stove eye is turned on.
  • 41. Which one of these indicates a chemical change has occurred?
A) An electric heating pad gets warm when it is turned on.
B) A white salty substance forms on the bottom of a coke can that has been left in a bucket of water.
C) Bubbles come out of the water in a pan when it boils.
D) A large slab of aluminum is pressed into thin foil.
  • 42. Which one of these indicates a chemical change has occurred?
A) Cheese melts on a hot hamburger.
B) Liquid water turns into solid ice when placed in the freezer.
C) A banana will become very runny when crushed in a blender.
D) A white marshmallow turns golden brown after roasting over a fire.
  • 43. Which of these is a physical change?
A) frying an egg
B) exploding dynamite
C) burning a garbage pile
D) sharpening a pencil
  • 44. Which of these is a chemical change?
A) burning gasoline in the car
B) the car gets hot after sitting in the sunny parking lot all day
C) crumpling the metal door of a car during an accident
D) the car window get frosted on a cold winter morning
  • 45. What type of change is digesting food?
A) chemical change
B) physical change
  • 46. What type of change is mixing cookie dough?
A) chemical change
B) physical change
  • 47. This type of mixture consists of two liquids that DO NOT dissolve in one another.
A) miscible
B) immiscible
  • 48. This type of mixuture consists of two liquids that DO dissolve in one another.
A) miscible
B) immiscible
  • 49. What type of mixture is oil and water?
A) miscible
B) immiscible
  • 50. What type of mixture is alcohol and water?
A) immiscible
B) miscible
תלמידים שפתרו תרגול זה פתרו גם :
Physical and chemical changes quiz cbse/science/class7
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