UPCAT Review Volume 2: Science Questions
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Questions and Answers

In a solution the substance that does the dissolving is called _______

the solvent

Water is a good solvent because ____

  • Water is such a good solvent because it is such a small molecule
  • Water is such a good solvent because it repels most molecules.
  • Water is a good solvent due to its polarity and small molecular size (correct)
  • Water is a good solvent because it is a negatively charged ion.
  • A solution that cannot hold any more solute at room temperature would be

  • a dilute solution
  • a concentrated solution
  • a supersaturated solution
  • a saturated solution (correct)
  • Ethanol dissolved in water would be an example of

    <p>a solution between two miscible liquids</p> Signup and view all the answers

    To form a supersaturated solution requires

    <p>none of the above</p> Signup and view all the answers

    Which one of the following is an example of a physical change?

    <p>sugar dissolving in water</p> Signup and view all the answers

    Which one of the following is not a physical change?

    <p>boiling an egg</p> Signup and view all the answers

    The chemicals after a chemical change

    <p>have properties different to the chemicals before the change.</p> Signup and view all the answers

    Heptane is always composed of 84% carbon and 16% hydrogen by mass. What law does this observation illustrate?

    <p>The Law of Definite Proportions.</p> Signup and view all the answers

    Give the mass number for an atom that has 10 protons, 10 electrons, and 11 neutrons.

    <p>31</p> Signup and view all the answers

    How much of substance W will react with 9.0 g of substance Z?

    <p>18.0 g</p> Signup and view all the answers

    The amount of substance WZ that will be produced from 12.0 g of substance Z assuming that substance W is in excess is

    <p>36.0 g</p> Signup and view all the answers

    Which conditions will increase the rate of chemical reaction?

    <p>increased temperature and increased concentration of reactants?</p> Signup and view all the answers

    When a lit match is touched to the wick of a candle, the candle begins to burn. When the match is removed, the candle continues to burn. In this reaction, the match

    <p>supplies activation energy.</p> Signup and view all the answers

    Compared to a glass of ice water with ice in it, a glass of plain ice-cold water without ice on a warm day will warm up

    <p>faster</p> Signup and view all the answers

    In 150 cm³ water, how much of the substance will dissolve at 75° C?

    <p>18 g</p> Signup and view all the answers

    After studying the illustration above, one may conclude that

    <p>sodium chloride dissociates when placed in water</p> Signup and view all the answers

    One may also conclude that

    <p>when ions are present they are attracted to electrodes having opposite electrical charges</p> Signup and view all the answers

    If the volume of a gas at a certain pressure is halved,

    <p>its temperature is halved</p> Signup and view all the answers

    Which of the following graphs shows the temperature-volume relationship for a gas? (T = temperature and V = volume)

    <p>Graph with temperature on y-axis, volume on x-axis, and a linear relationship.</p> Signup and view all the answers

    Unless an object at rest is acted upon by a force, it stays at rest due to its

    <p>inertia</p> Signup and view all the answers

    Maron rode on his bike from 9:00 am to 10:30 am. If he drove at an average speed of 15kph, what was the total distance he covered?

    <p>22.5 km</p> Signup and view all the answers

    Study Notes

    UPCAT Review Materials

    • UPCAT Review, Volume 2, Science Questions are compiled from past UPCAT exams.
    • The questions are provided for free by Review Masters division of KB Tutorial and Consulting Corp..
    • The materials are not for sale.
    • They are a compilation of student feedback and are not a guarantee of the questions appearing on future UPCAT exams.
    • The materials aim to prepare students for future exams.
    • The study materials include questions and answers.
    • There is an online review portal to access automated test versions.
    • Students are advised to print the questions and answer them as if it were the actual test and use the answer key to review.

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    UPCAT Review Questions PDF

    Description

    Prepare for the UPCAT with this comprehensive review of Science questions compiled from past exams. This free resource from KB Tutorial and Consulting Corp. includes questions, answers, and an online review portal for automated testing. Practice effectively by simulating actual test conditions and using the answer key for self-assessment.

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