The Art of Separating Mixtures

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Questions and Answers

Which method of separating mixtures uses a screen to let liquid particles through, but traps solid particles?

  • Mechanical Separation
  • Decanting
  • Magnetic Separation
  • Filtration (correct)

Which method of separating mixtures takes advantage of the physical property of magnetism?

  • Mechanical Separation
  • Decanting
  • Filtration
  • Magnetic Separation (correct)

Which method of separating mixtures involves pouring off a liquid, leaving another liquid or solid behind?

  • Decanting (correct)
  • Mechanical Separation
  • Magnetic Separation
  • Filtration

Which method of separating mixtures uses physical properties such as color and shape?

<p>Mechanical Separation (C)</p> Signup and view all the answers

Which method of separating mixtures is based on the physical property of boiling point?

<p>Distillation (C)</p> Signup and view all the answers

Which of the following is a characteristic of acids?

<p>React with most metals (D)</p> Signup and view all the answers

What is the pH range of bases?

<p>Greater than 7 (D)</p> Signup and view all the answers

Which acid is commonly found in car batteries?

<p>Sulfuric acid (C)</p> Signup and view all the answers

What is the common name for HCl?

<p>Hydrochloric acid (D)</p> Signup and view all the answers

Which of the following is a characteristic of bases?

<p>Dissolve fats and oils (D)</p> Signup and view all the answers

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Study Notes

Methods of Separating Mixtures

  • Filtration uses a screen to allow liquid particles to pass through while trapping solid particles.
  • Magnetism is utilized in magnetic separation to attract and remove ferrous materials from mixtures.
  • Decantation involves pouring off a liquid to separate it from another liquid or solid that remains behind.
  • Sieving utilizes physical properties such as particle size, shape, and color to distinguish between different components.
  • Distillation separates mixtures based on differences in boiling points, allowing for the isolation of liquids.

Characteristics of Acids and Bases

  • Acids are characterized by their sour taste, ability to conduct electricity, and turning blue litmus paper red.
  • Bases generally have a bitter taste, are slippery to the touch, and turn red litmus paper blue.
  • The pH range for bases typically spans from 8 to 14, indicating their alkalinity.

Common Acids

  • Sulfuric acid (Hâ‚‚SOâ‚„) is a commonly used acid found in car batteries.
  • Hydrochloric acid is the common name for HCl, a strong acid used in various applications.

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