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PS CH 2 Test (14-15)
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  • 1. Salty water is
A) a compound.
B) a homogenus mixture.
C) a heterogeneous mixture.
D) an element.
  • 2. Sand water is
A) a compound.
B) a homogeneous mixture.
C) a heterogeneous mixture.
D) an element.
  • 3. Oxygen is
A) a homogeneous mixture.
B) a heterogeneous mixture.
C) a compound.
D) an element.
  • 4. Vegetable soup is
A) a homogeneous mixture.
B) a compound.
C) a heterogeneous mixture.
D) an element.
  • 5. Gatorade is
A) a homogeneous mixture.
B) a compound.
C) an element.
D) a heterogeneous mixture.
  • 6. Iron is
A) a heterogeneous mixture.
B) a compound.
C) a homogeneous mixture.
D) an element.
  • 7. Sodium benzoate is
A) a homogeneous mixture.
B) a compound.
C) a heterogeneous mixture.
D) an element.
  • 8. Stainless steel is
A) a homogeneous mixture.
B) a heterogeneous mixture.
C) an element.
D) a compound.
  • 9. A bag of trail mix is
A) a homogeneous mixture.
B) a compound.
C) a heterogeneous mixture.
D) an element.
  • 10. An aquarium with a large variety of fish is
A) a compound.
B) an element.
C) a heterogeneous mixture.
D) a homogeneous mixture.
  • 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 homogeneous mixture.
B) a compound.
C) a heterogeneous mixture.
D) an element.
  • 14. Dihydrogen monoxide is
A) a compound.
B) an element.
  • 15. Bronze is
A) a heterogeneous mixture.
B) an element.
C) a homogeneous mixture.
D) a compound.
  • 16. Water that is cloudy with fine silt
A) distillation is the best method for separating the parts.
B) evaporation is the best method for separating the parts
C) using a sieve is the best method for separating the parts
D) filtration is the best method for separating the parts
  • 17. Water and alcohol
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) using a sieve is the best method for separating the parts
  • 18. Colors that make up black ink
A) chromatography
B) decanting 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
  • 19. Coffee grounds and water
A) filtration is the best method for separating the parts
B) distillation is the best method for separating the parts.
C) decanting is the best method for separating the parts
D) using a sieve is the best method for separating the parts
  • 20. Cat poo from the nasty litter box
A) distillation is the best method for separating the parts.
B) decanting is the best method for separating the parts
C) filtration is the best method for separating the parts
D) pick out the parts
  • 21. Oil and heavy rocks
A) chromatography
B) decanting 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
  • 22. Salt and water
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
  • 23. Small pieces of dirt from large grapes
A) using a sieve is the best method for separating the parts
B) distillation is the best method for separating the parts.
C) chromatography
D) decanting is the best method for separating the parts
  • 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 chemical property.
B) is a physical property.
  • 29. The ability to react with oxygen
A) is a physical property.
B) is a chemical property.
  • 30. Weight
A) is a chemical property.
B) is a physical property.
  • 31. Conductivity
A) is a physical property.
B) is a chemical property.
  • 32. Malleability
A) is a chemical property.
B) is a physical property.
  • 33. Ductility
A) is a chemical property.
B) is a physical 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 chemical property.
B) is a physical 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) The red T-shirt fades to pink when washed in hot water.
B) Sand sinks to the bottom of a glass of water.
C) An empty coke can crumbles when it is stepped upon.
D) Bubbles are produced when vinegar is mixed with baking soda.
  • 40. Which one of these indicates a chemical change has occurred?
A) The surface of an electric stove gets hot when the stove eye is turned on.
B) A tan colored wall is turned blue when it is painted with blue paint.
C) The wax in a birthday candle burns.
D) Snow falls from the sky when the temperature drops to 20 degrees Farenheit.
  • 41. Which one of these indicates a chemical change has occurred?
A) A white salty substance forms on the bottom of a coke can that has been left in a bucket of water.
B) An electric heating pad gets warm when it is turned on.
C) A large slab of aluminum is pressed into thin foil.
D) Bubbles come out of the water in a pan when it boils.
  • 42. Which one of these indicates a chemical change has occurred?
A) Cheese melts on a hot hamburger.
B) A white marshmallow turns golden brown after roasting over a fire.
C) A banana will become very runny when crushed in a blender.
D) Liquid water turns into solid ice when placed in the freezer.
  • 43. Which of these is a physical change?
A) sharpening a pencil
B) exploding dynamite
C) burning a garbage pile
D) frying an egg
  • 44. Which of these is a chemical change?
A) crumpling the metal door of a car during an accident
B) the car window get frosted on a cold winter morning
C) the car gets hot after sitting in the sunny parking lot all day
D) burning gasoline in the car
  • 45. What type of change is digesting food?
A) physical change
B) chemical change
  • 46. What type of change is mixing cookie dough?
A) physical change
B) chemical 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) immiscible
B) miscible
  • 49. What type of mixture is oil and water?
A) miscible
B) immiscible
  • 50. What type of mixture is alcohol and water?
A) miscible
B) immiscible
Azok a diákok, akik elvégezték ezt a tesztet, szintén elvégezték :
Physical and chemical changes quiz cbse/science/class7
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