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Physical Science Questions

Physical Science Questions. A. B. C. D. Which of the following should be used to boil 75 milliliters of a liquid?. A B C D. What change should be made to cause the pendulum to swing to point X?. Using a ball with smaller mass Swinging the ball with less force

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Physical Science Questions

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  1. Physical Science Questions

  2. A. B. C. D. Which of the following should be used to boil 75 milliliters of a liquid? • A • B • C • D

  3. What change should be made to cause the pendulum to swing to point X? • Using a ball with smaller mass • Swinging the ball with less force • Lengthening the string holding the ball • Starting the ball from a higher position

  4. B. A. D. C. Maintaining moisture content is one aspect of keeping food fresh. Which of these experimental designs would be best to use to determine whether plastic sandwich bags help keep food fresh? • A • B • C • D

  5. A. B. D. C. Which of these models shows the atom with the most mass? • A • B • C • D

  6. Diamonds have a density of 3.5 g/mL. Where would a diamond come to rest if dropped into the cylinder shown below? • On top of the ether • On top of the water • On top of the mercury • On the bottom of the container

  7. After an experiment, researchers concludedthat one species of bacteria could break downa certain kind of hazardous waste. Beforeannouncing this conclusion, the researchersshould — • repeat the experiment to make sure the results are reproducible • write a formal hypothesis statement • ignore the results of similar experiments by other researchers • plot the data on appropriate graphs

  8. A chemical reaction that releases heat is classified as — • exothermic • replacement • synthesis • autonomic

  9. Which of these molecules is composed of exactly four atoms? • KClO4 • NH4 • Cl2O • H2O2

  10. All of these are subatomic particlesEXCEPT — • ions • protons • electrons • neutrons

  11. All of these could cause disruptions in the reception of radio waves EXCEPT — • cloud cover • lightning bolts • rain • visible light

  12. How many atoms of oxygen are in onemolecule of Mg(ClO)2? • 1 • 2 • 3 • 4

  13. The picture shows one part of the periodictable of the elements. According to thisinformation, how many protons does a carbonatom contain? • 0.0111 • 6 • 12.0111 • 18

  14. What is the main reason that this label hasthe instructions “Shake well before using”? • Oil does not easily mix with vinegar. • Chemical changes occur when different liquids are mixed. • Salt does not quickly dissolve in a mixture. • Solutions containing suspended air have fewer calories.

  15. How many electrons does gold (Au) have? • 79 • 118 • 197 • 276

  16. Which phase of matter is represented by steam? • Plasma • Solid • Liquid • Gas

  17. The picture shows the design of an electriccircuit that fails to produce light. This circuitcould be made to work by — • using a bulb with higher wattage • moving the switch to the open position • connecting another 9-volt battery • attaching the wires to separate poles on the light

  18. This tool is used to measure — • volume • pH • temperature • weight

  19. All of these are important pieces of safety equipment EXCEPT — • a first-aid kit • a fire extinguisher • an eye-wash station • a graduated cylinder

  20. A. B. D. C. Which of these contains 90 milliliters of solution? • A • B • C • D

  21. A. B. D. C. Which of these models best illustrates amixture? • A • B • C • D

  22. The model shows the structural formula formethane. Which of these is the properchemical formula for methane? • 4CH • CH–4 • 2CH2 • CH4

  23. This reaction may be classified as exothermic because — • hydrogen bonds with chlorine • two molecules of acid are formed • the equation is balanced • heat is produced

  24. In this model of a periodic table, a group of elements that are arranged in a vertical column is called a — • gas • family • cluster • precipitate

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