Quiz - Mixtures And Solutions

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| By Kevin Aulow
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Kevin Aulow
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Quizzes Created: 13 | Total Attempts: 7,984
Questions: 20 | Attempts: 151

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Quiz - Mixtures And Solutions - Quiz

This is a quiz on lessons 16 and 17. For the most part, the questions are in the same order as the text.
There are 20 questions in the quiz. Good luck.


Questions and Answers
  • 1. 

    Elements are made of only one type of_________________. 

    • A.

      Atom

    • B.

      Proton

    • C.

      Neutron

    • D.

      Electron

    Correct Answer
    A. Atom
    Explanation
    By definition, elements are made of a single type of ATOM.

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  • 2. 

    Compounds form when atoms ________ together to form a substance with properties different than the individual atoms. 

    • A.

      Bond

    • B.

      Glue

    • C.

      Peanut butter

    • D.

      Jelly

    Correct Answer
    A. Bond
    Explanation
    When atoms BOND, they attach to one another to form a substance with properties different from the individual atoms.

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  • 3. 

    Compounds form when atoms bond together CHEMICALLY.  Mixtures form when two or more substances are _________________ mixed together. 

    • A.

      Physically

    • B.

      Chemically

    • C.

      Electrically

    • D.

      Silly puddy

    Correct Answer
    A. Physically
    Explanation
    Mixtures are NOT chemically combined. They are physically combined. That means the properties of the individual pieces are not changed.

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  • 4. 

    This is a free point for you.  Select ALL of the checkboxes to receive your free point. 

    • A.

      Red

    • B.

      Blue

    • C.

      Yellow

    • D.

      Panterrrrra!

    Correct Answer(s)
    A. Red
    B. Blue
    C. Yellow
    D. Panterrrrra!
    Explanation
    You guys are JEALOUS of my Spanish pronunciation!

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  • 5. 

    Once created, mixtures generally can NOT be separated. 

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    Most mixtures and solutions can be separated fairly easily.

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  • 6. 

    When you separate a mixture, the individual pieces are different than they were originally. 

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    When you separate the substances of a mixture, the properties of the individual pieces do NOT change from their original form.

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  • 7. 

    A _______________________ is a homogeneous mixture that is mixed so well that it seems to be a pure substance. 

    • A.

      Solution

    • B.

      Suspension

    • C.

      Compound

    • D.

      Colloid

    Correct Answer
    A. Solution
    Explanation
    A solution is a homogeneous mixture that is mixed so well that it seems to be a pure substance. In a solution, the solute particles are evenly distributed throughout the solvent, resulting in a uniform composition. This uniformity makes it difficult to distinguish the individual components of the solution, giving the appearance of a pure substance.

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  • 8. 

    If you look closely at a heterogeneous _____________________ you can clearly see the different substances that make it up. 

    • A.

      Mixture

    • B.

      Solution

    • C.

      Compound

    • D.

      Atom

    Correct Answer
    A. Mixture
    Explanation
    A mixture is a combination of two or more substances that are not chemically bonded together. In a heterogeneous mixture, the different substances are not evenly distributed and can be seen as separate components. Therefore, if you look closely at a heterogeneous mixture, you can clearly see the different substances that make it up.

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  • 9. 

    A colloid is mixture that can look like a solution or a suspension.  Actually, they SEEM homogeneous, but are actually heterogeneous.  Which of the following is a colloid? 

    • A.

      Cream

    • B.

      Saltwater

    • C.

      Sugar water

    • D.

      Pepsi cola

    Correct Answer
    A. Cream
    Explanation
    Cream is a colloid because it is a mixture of fat droplets dispersed in water. It appears homogeneous but is actually heterogeneous due to the presence of these fat droplets.

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  • 10. 

    Which of the following could be a method for separating a mixture? 

    • A.

      Flotation

    • B.

      Evaporation

    • C.

      Sifting

    • D.

      Filtration

    • E.

      Using a magnet

    • F.

      Evaporation

    • G.

      Peanut butter

    Correct Answer(s)
    A. Flotation
    B. Evaporation
    C. Sifting
    D. Filtration
    E. Using a magnet
    F. Evaporation
    Explanation
    The given answer is correct because all the methods listed can be used for separating a mixture. Flotation is a method used to separate substances based on their density. Evaporation involves heating a mixture to vaporize the liquid and leave behind the solid components. Sifting is a process of separating particles of different sizes by passing them through a sieve. Filtration is a method of separating solids from liquids or gases using a filter. Using a magnet can be used to separate magnetic substances from a mixture. Therefore, all the methods listed are valid methods for separating a mixture.

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  • 11. 

    Solutions can be solids, liquids, or gasses. 

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    This statement is true because solutions can indeed exist in the form of solids, liquids, or gases. A solution is a homogeneous mixture of two or more substances, where one substance is dissolved in another. The substance that is being dissolved is called the solute, and the substance in which the solute is dissolved is called the solvent. Solutes can be solids (such as salt dissolved in water), liquids (such as alcohol dissolved in water), or gases (such as carbon dioxide dissolved in soda). Therefore, the statement is correct.

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  • 12. 

    Water is called the universal solvent because it dissolves most (but not all) substances.  A solvent is a substance into which another substance __________________. 

    • A.

      Dissolves

    • B.

      Evaporates

    • C.

      Boils

    • D.

      Disappears

    Correct Answer
    A. Dissolves
    Explanation
    Water is called the universal solvent because it has the ability to dissolve a wide variety of substances. When a substance dissolves in water, its molecules disperse and become evenly distributed throughout the water. This is due to water's unique chemical properties, such as its polarity and ability to form hydrogen bonds. However, it is important to note that water does not dissolve all substances, as there are some substances that are insoluble or only partially soluble in water.

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  • 13. 

    A ____________________ is a substance that dissolves into another substance to form a solution. 

    • A.

      Solute

    • B.

      Solvent

    • C.

      Pig

    • D.

      Saline

    Correct Answer
    A. Solute
    Explanation
    A solute is a substance that dissolves into another substance to form a solution. When a solute is added to a solvent, it disperses evenly throughout the solvent, resulting in a homogeneous mixture. The solute particles are typically smaller in size and are dispersed or dissolved in the solvent. The solute can be a solid, liquid, or gas, and it is the component that is present in a smaller amount compared to the solvent in the solution.

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  • 14. 

    Which of the following can INCREASE the rate of solubility.  Check all that apply.  

    • A.

      Heating

    • B.

      Stirring

    • C.

      Changing the size of the particles

    Correct Answer(s)
    A. Heating
    B. Stirring
    C. Changing the size of the particles
    Explanation
    Heating, stirring, and making particle sizes smaller ALL can help the rate of solubility.

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  • 15. 

    Why does crushing the solute increase the rate of solubility? 

    • A.

      It increases the surface area so that there is more surface to dissolve

    • B.

      It increases the temperature of the solution

    • C.

      Actually, crushing the solute doesn't increase the surface area

    • D.

      Coconut

    Correct Answer
    A. It increases the surface area so that there is more surface to dissolve
    Explanation
    Crushing the solute increases the surface area, which in turn increases the rate of solubility. When the solute is crushed into smaller particles, there is more surface area available for the solvent molecules to come into contact with. This increased surface area allows for more efficient and faster dissolution of the solute, as the solvent molecules can interact with a larger portion of the solute at the same time. Therefore, crushing the solute enhances the rate of solubility.

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  • 16. 

    Which of the following dissolve in water? 

    • A.

      Salt

    • B.

      Sugar

    • C.

      Baking powder

    • D.

      Gold

    • E.

      Copper

    • F.

      Food dye

    Correct Answer(s)
    A. Salt
    B. Sugar
    C. Baking powder
    F. Food dye
    Explanation
    Salt, sugar, baking powder, and food dye dissolve in water because they are all soluble substances. Soluble substances have the ability to break down and mix evenly with water molecules, forming a homogeneous solution. In the case of salt and sugar, they are composed of small, polar molecules that attract water molecules through hydrogen bonding. Baking powder contains a combination of baking soda and an acid, which react with water to produce carbon dioxide gas, causing it to dissolve. Food dye is specifically designed to be soluble in water, allowing it to mix and spread evenly throughout a liquid.

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  • 17. 

    Sugar dissolves more easily in warm tea than in iced tea. 

    • A.

      True

    • B.

      False

    • C.

      I don't know

    • D.

      Nelisa likes Mr. Aulow more than she lets on.

    Correct Answer
    A. True
    Explanation
    The statement is true because warm tea has higher temperature compared to iced tea. Higher temperature increases the kinetic energy of the particles in the tea, including the sugar molecules. This increased kinetic energy allows the sugar molecules to move more quickly and collide more frequently with the water molecules, resulting in faster dissolution. In iced tea, the lower temperature slows down the movement of the sugar molecules, reducing their ability to dissolve in the water.

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  • 18. 

    If Vanessa added a spoonful of sand to a gallon of water and stirred it for 3 hours, the sand would eventually dissolve. 

    • A.

      False

    • B.

      True

    • C.

      Someone should apologize to CJ for stepping on his sand castle and hurting his hand

    • D.

      Blue-green algae

    Correct Answer
    A. False
  • 19. 

    If you left a Starburst in a bowl of water for 3 months and then stirred it for 5 minutes, it would probably dissolve. 

    • A.

      True

    • B.

      False

    Correct Answer
    A. True
    Explanation
    The question suggests that leaving a Starburst candy in water for 3 months would likely cause it to dissolve. This is because Starburst candies are primarily made of sugar, which is highly soluble in water. Over time, the water would cause the sugar molecules in the candy to break apart and dissolve into the surrounding liquid. Stirring the candy for 5 minutes would further aid in the dissolution process by increasing the contact between the candy and the water. Therefore, it is likely that the Starburst candy would dissolve if left in water for 3 months and stirred for 5 minutes.

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