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6th Grade Science Reviewer Part 5 MATTER

 

6th Grade Science Reviewer         Part 5        MATTER

Direction: Choose the letter with the best answer. Write your answer on your answer sheet.

1. This is a separating technique that separates the insoluble substances to a solvent such as decanting and centrifuging.

  1. sedimentation *
  2. filtration
  3. distillation
  4. evaporation

2. This can be done by letting the mixture to settle and separate by gravity, or by taking out the layers

    of liquid. 

  1. distillation
  2. evaporation
  3. filtration
  4. decantation *

3. What is the process by which water changes from liquid to gas or vapor? 

  1. filtration
  2. evaporation *
  3. decantation
  4. distillation

4. Which of these solid materials is partially soluble in water? 

  1. orange
  2. tomato seed
  3. paper *
  4. plastic

5. What method is useful in cleaning oil spills? 

  1. evaporation
  2. decantation *
  3. distillation
  4. filtration

6. What is the best way of separating a teaspoon of iron fillings from a teaspoon of fine sand?

  1. distillation
  2. magnetism *
  3. filtration
  4. decantation

7. What makes powdered chocolate dissolve in hot water fast?

  1. cold temperature
  2. high temperature *
  3. surface area
  4. none of the above

8. The process in which a solid change directly into a gaseous state on heating is called ________.

  1. sublimation *
  2. evaporation
  3. condensation
  4. decantation

9. Which is NOT true about solubility?

  1. The manner of stirring is not a factor to dissolve a solute in a solvent. *
  2. The size of the solute particles affects the dissolving process.
  3. The nature of a solute and the amount of solvent also determine how fast the solute dissolves.
  4. The temperature of the solvent affects how fast the dissolving process.

10. Not all substances can be dissolved in water. What do you call the substances that can be dissolved in water?

  1. component
  2. soluble *
  3. solution
  4. insoluble

 

 

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