Methods Of Separating Mixture Quiz

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  • 1/15 Questions

    All mixtures can be separated by physical processes.

    • True
    • False
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About This Quiz

Explore the intriguing world of mixtures and their separation in this quiz. Test your understanding of different types of mixtures like colloids and solutions, and learn about the properties and classification of mixtures. This quiz is essential for grasping fundamental concepts in physical chemistry.

Methods Of Separating Mixture Quiz - Quiz

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  • 2. 

    Which of the following would be best to separate a mixture of sand and stones?

    • Magnetism

    • Filtration

    • Screening

    • Separation by density

    Correct Answer
    A. Screening
    Explanation
    Screening would be the best method to separate a mixture of sand and stones. Screening involves passing the mixture through a sieve or mesh, allowing the smaller particles (in this case, sand) to pass through while retaining the larger particles (stones). This method is effective in separating particles based on their size, making it suitable for separating a mixture of sand and stones.

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  • 3. 

    Which of the following mixtures could not be separated by filtration?

    • Salty water

    • Muddy water

    • Orange juice with pulp in it

    • Dusty air

    Correct Answer
    A. Salty water
    Explanation
    Salty water could not be separated by filtration because filtration is a process that separates solid particles from a liquid by passing the mixture through a filter. In the case of salty water, the salt is dissolved in the water and cannot be filtered out as it is in a dissolved state. Filtration is only effective for separating insoluble solids from liquids.

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  • 4. 

    A mixture has particles that cannot be seen but do reflect light. It should be classified as a ______.

    • Homogenous mixture

    • Suspension

    • Solution

    • Colloid

    Correct Answer
    A. Colloid
    Explanation
    A colloid is a type of mixture where small particles are dispersed throughout a medium, but they are not dissolved. In this case, the particles in the mixture cannot be seen, but they do reflect light, indicating that they are larger than the particles in a solution. Therefore, the correct classification for this mixture would be a colloid.

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  • 5. 

    Which of the following is a mixture?

    • Steel

    • Water

    • Oxygen

    • Gold

    Correct Answer
    A. Steel
    Explanation
    Steel is a mixture because it is composed of two or more substances, mainly iron and carbon. The carbon content in steel can vary, resulting in different types of steel with varying properties. This combination of iron and carbon gives steel its strength and durability, making it suitable for various applications in construction, manufacturing, and other industries.

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  • 6. 

    A yellow powder and a blue liquid are shaken together in a test tube to produce a clear green mixture that is all liquid. Which of the following best describes the behavior of the above pair of substances?

    • Soluble

    • Insoluble

    • Miscible

    • Immiscible

    Correct Answer
    A. Soluble
    Explanation
    The yellow powder and blue liquid are able to dissolve in each other, forming a clear green liquid. This indicates that the substances are soluble in each other, meaning they can mix and form a homogeneous solution.

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  • 7. 

    The difference between homogenous and hetergenous mixtures is that chemical bonds are formed in homogenous mixtures.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    Homogeneous and heterogeneous mixtures differ in the uniformity of their composition. In a homogeneous mixture, the components are evenly distributed and indistinguishable, giving the appearance of a single phase. In contrast, a heterogeneous mixture has visibly different components that are not evenly distributed. The given statement is incorrect because chemical bonds are not formed in either type of mixture. Chemical bonds involve the sharing or transfer of electrons between atoms, which is not a characteristic of mixtures.

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  • 8. 

    Which type of mixture contains the largest particles?

    • Solution

    • Suspension

    • Colloid

    • Varies according to the composition of the mixture

    Correct Answer
    A. Suspension
    Explanation
    Suspension is a type of mixture that contains the largest particles. In a suspension, the particles are large enough to be visible to the naked eye and do not dissolve or settle easily. They are suspended in a liquid or gas and can be separated by filtration or settling. This is different from a solution, where the particles are very small and evenly distributed, and a colloid, where the particles are intermediate in size and do not settle easily. The size of particles in a mixture can vary depending on the composition, but in general, suspensions have the largest particles.

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  • 9. 

    A solid and a liquid are shaken together in a test tube to produce a milky mixture that eventually separates into a clear liquid and a white solid. Which of the following best describes the mixture?

    • Solution

    • Colloid

    • Suspension

    Correct Answer
    A. Suspension
    Explanation
    The given scenario describes a mixture in which a solid and a liquid are shaken together to produce a milky mixture that eventually separates into a clear liquid and a white solid. This indicates that the solid particles are not dissolved completely in the liquid but rather remain suspended in it. Therefore, the best description for this mixture is a suspension. In a suspension, the particles are larger and do not dissolve, causing them to settle over time.

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  • 10. 

    Distillation is used to separate _____.

    • Heterogenous mixtures

    • Suspensions

    • Colloids

    • Solutions

    Correct Answer
    A. Solutions
    Explanation
    Distillation is a process used to separate solutions. Solutions are mixtures where a solute is dissolved in a solvent. In distillation, the mixture is heated to vaporize the solvent, and then the vapor is condensed back into a liquid. Since the solute remains behind in the original container, the distillation process effectively separates the solute from the solvent, allowing for the purification or concentration of the desired substance. Therefore, distillation is commonly used in various industries, such as the production of alcoholic beverages, petroleum refining, and water purification.

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  • 11. 

    Select all that apply. Which of the following are homogenous solutions?

    • Sugar water

    • Air

    • Peanuts and water

    • An unopened soft drink

    • Cement

    Correct Answer(s)
    A. Sugar water
    A. Air
    Explanation
    Homogeneous solutions are uniform mixtures where the components are evenly distributed at a molecular level. Sugar water is a homogeneous solution because the sugar molecules are evenly dispersed throughout the water molecules. Air is also a homogeneous solution because it is a mixture of gases (such as nitrogen, oxygen, carbon dioxide) that are uniformly distributed. On the other hand, peanuts and water, an unopened soft drink, and cement are not homogeneous solutions as they consist of distinct components that are not uniformly mixed.

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  • 12. 

    Select all that apply. Why are mixtures (such as sugar in water) not given chemical formulas?

    • Their elements are unknown.

    • No chemical bonding took place.

    • Mixtures do not contain compounds.

    • The elements or compounds in the mixtures have no definite proportions.

    Correct Answer(s)
    A. No chemical bonding took place.
    A. The elements or compounds in the mixtures have no definite proportions.
    Explanation
    Mixtures, such as sugar in water, are not given chemical formulas because no chemical bonding took place and the elements or compounds in the mixtures have no definite proportions. In a mixture, the substances are simply physically mixed together without any chemical reaction occurring. Therefore, the elements or compounds in the mixture retain their individual properties and do not combine to form a new substance with a specific chemical formula. Additionally, the proportions of the elements or compounds in the mixture can vary, unlike in compounds where the elements are present in fixed ratios.

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  • 13. 

    Select all that apply. Salt dissolved in water is a solution, therefore ______.

    • Salt and water are chemically combined

    • Salt is not chemically bonded to water

    • The quantity of salt to water is fixed

    • The ratio of salt to water may vary

    • Salt and water retain their own chemical properties

    Correct Answer(s)
    A. Salt is not chemically bonded to water
    A. The ratio of salt to water may vary
    A. Salt and water retain their own chemical properties
    Explanation
    Salt dissolved in water is a solution, therefore salt is not chemically bonded to water. The ratio of salt to water may vary, indicating that the quantity of salt to water is not fixed. Additionally, salt and water retain their own chemical properties even when they are in solution.

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Dec 20, 2012
    Quiz Created by
    Haszshe
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