Classifying Mixtures and Suspensions
24 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which of the following is an example of a mechanical mixture?

  • Cornflakes and milk (correct)
  • Foggy air
  • Tap water
  • Salad dressing

What distinguishes a suspension from a solution?

  • Suspensions can settle over time, while solutions cannot. (correct)
  • Suspensions are always cloudy, while solutions are always clear.
  • Solutions contain solid particles, whereas suspensions do not.
  • Solutions require mixing, while suspensions do not.

Identify the substance categorized as a solution.

  • Muddy water
  • Abrasive skin cleanser
  • Clean air (correct)
  • Orange juice

Which of the following pairs includes items that are both mechanical mixtures?

<p>Cornflakes and milk, concrete (A)</p> Signup and view all the answers

What characteristic of solutions makes them different from mechanical mixtures?

<p>Solutions have a uniform composition throughout. (C)</p> Signup and view all the answers

Which component is an example of a suspension?

<p>Muddy water (D)</p> Signup and view all the answers

What would increase the clarity of a suspension?

<p>Allowing it to settle over time. (C)</p> Signup and view all the answers

Which of the following is NOT a characteristic of a mechanical mixture?

<p>Looks the same throughout. (C)</p> Signup and view all the answers

What characterizes a mechanical mixture?

<p>Different parts can be seen with the unaided eye. (D)</p> Signup and view all the answers

Which of the following is an example of a suspension?

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

How do suspensions behave if left undisturbed?

<p>They separate into layers. (D)</p> Signup and view all the answers

Which of the following substances is considered a pure substance?

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

What is a common misconception about fruit juice labeled as '100% pure'?

<p>It is actually a mixture. (D)</p> Signup and view all the answers

What type of mixture remains uniform throughout?

<p>Homogeneous mixture (A)</p> Signup and view all the answers

What happens to the fatty part in farm-fresh milk if left standing?

<p>It floats to the top. (A)</p> Signup and view all the answers

What defines a suspension compared to other types of mixtures?

<p>It has solid or liquid particles that can settle upon standing. (C)</p> Signup and view all the answers

What does the process of homogenization do to milk?

<p>It breaks down fat into tiny droplets. (C)</p> Signup and view all the answers

Which of the following is NOT a characteristic of a solution?

<p>The particles can be seen under a microscope. (C)</p> Signup and view all the answers

Which of the following examples can be classified as a solution?

<p>Clear apple juice (D)</p> Signup and view all the answers

What happens when marbles are combined with sand in a container according to the model exercise?

<p>The total volume equals the sum of the marbles and sand. (B)</p> Signup and view all the answers

What is the primary reason particles in a solution cannot be seen?

<p>They are too small to be distinguished. (D)</p> Signup and view all the answers

Which substance is listed as an example of a solid solution?

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

What is a characteristic of an emulsion?

<p>It remains a uniform mixture without separation. (B)</p> Signup and view all the answers

In the context of milk, what happens if homogenization is not performed?

<p>The cream will rise to the top. (C)</p> Signup and view all the answers

Flashcards

Mechanical Mixture

A type of mixture where the different components can be seen with the naked eye.

Suspension

A cloudy mixture with solid or liquid clumps dispersed in a liquid or gas. These mixtures can separate into layers over time.

Mixture

A type of matter that is made up of two or more substances that are not chemically bonded.

Solution

A mixture that appears uniform throughout, even though it contains multiple components. The components are evenly distributed and cannot be easily separated.

Signup and view all the flashcards

Solute

A solid substance that dissolves into a liquid. Sugar dissolving in water is an example.

Signup and view all the flashcards

Solvent

The liquid in which a solid substance dissolves. Water is a common solvent.

Signup and view all the flashcards

Homogeneous Mixture

A mixture where one substance is evenly distributed throughout another, like salt in water. This type of mixture can easily be separated by physical means.

Signup and view all the flashcards

Heterogeneous Mixture

A mixture in which the substances are not evenly distributed throughout. Examples include sand and water.

Signup and view all the flashcards

Compound

A substance composed of two or more elements chemically combined in a fixed ratio.

Signup and view all the flashcards

Element

A pure substance that cannot be broken down into simpler substances by chemical means.

Signup and view all the flashcards

Homogenization

A process where a liquid, like milk, is forced through tiny openings, breaking down fat globules into microscopic droplets.

Signup and view all the flashcards

Emulsion

A mixture where tiny droplets of one substance are suspended evenly throughout another substance, like oil in water.

Signup and view all the flashcards

Particles

The smallest particles of a substance that can exist independently.

Signup and view all the flashcards

Dissolving

The process of one substance disappearing into another to form a solution.

Signup and view all the flashcards

Study Notes

Mixtures

  • Mixtures are substances not purely one substance.
  • Examples include hand lotion, shampoo, soap, foods (with preservatives/additives), and fruit juice.
  • Fruit juice labeled "100% pure" is still a mixture of water, citric acid, and other substances.
  • Mixtures can be classified based on appearance.

Classifying Mixtures

  • Pure substances are common substances like sugar, water, salt, and oxygen gas.
  • Substances may appear pure, but in reality, they are mixtures.
  • Vinegar is a good example of a substance that may seem pure but is a mixture (not a pure substance).
  • To classify matter, understand mixtures.

Mechanical Mixtures

  • Mechanical mixtures contain visible parts.
  • Granola cereal and concrete are examples of mechanical mixtures.

Suspensions

  • Suspensions are cloudy mixtures with solid or liquid clumps in a liquid or gas.
  • Muddy water and tomato juice are examples.
  • Parts may settle into layers if not stirred.
  • Farm-fresh milk is a suspension; cream floats, water sinks.
  • Commercially available milk is an emulsion (a special type of suspension).
  • Homogenization is a process to keep emulsion stable.

Solutions

  • Solutions appear as one substance.
  • The parts are entirely mixed.
  • Clear apple juice, clean air, and stainless steel are solutions.
  • Particles of one substance dissolved in another.
  • The dissolving substance is called the solvent; the dissolved substance is called the solute.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Quiz Team

Related Documents

Chapter 6.3 Mixtures PDF

Description

Explore the fascinating world of mixtures, including mechanical mixtures and suspensions. This quiz will help you understand how substances can appear pure but actually contain mixtures. Dive into examples and classifications to enhance your knowledge of matter.

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser