Chemistry Exp. 1/ Investigation #1

10 Questions | Total Attempts: 33

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Chemistry Exp. 1/ Investigation #1

Read each question carefully and completely before choosing your answer. You will have 30 minutes to complete this Quiz.


Questions and Answers
  • 1. 
    Calculate the density of an object with a mass of 5 g and a volume of 12 mL. Would it sink or float in water? (The density of water is 1 g/mL).  IN THE SPACE PROVIDED, SHOW HOW YOU CALCULATED YOUR ANSWER & WHETHER THE OBJECT WILL SINK OR FLOAT IN WATER.
  • 2. 
    While burning coal and charcoal, you notice that coal releases more heat than charcoal. That means that the chemical potential energy is ________________ in charcoal than in coal.
    • A. 

      Lower

    • B. 

      Higher

    • C. 

      The same

  • 3. 
    When you touch an ice cube, heat is transferred from[Blank] to[Blank]
  • 4. 
    You have four water samples at different temperatures. In which sample are the molecules vibrating at the fastest speed?
    • A. 

      Water at 37 oC

    • B. 

      Water at 99 oC

    • C. 

      Water at 99 oF

    • D. 

      Water at 299 K

  • 5. 
    In a chemistry experiment, the total energy contained in a system is 45 J. After the system undergoes a chemical reaction, the total energy in the system is 39 J. Which of the following statements is true?
    • A. 

      The surroundings lost 6 J

    • B. 

      The surroundings gained 6 J

    • C. 

      The surroundings did not lose or gain energy

    • D. 

      This is impossible as a system cannot lose energy

  • 6. 
    You leave each of the following items outside on a hot, sunny day. Once the sun goes down, which item will cool off the fastest?
    • A. 

      Aluminum baseball bat

    • B. 

      Gold bracelet

    • C. 

      Wood bench

    • D. 

      Copper penny

  • 7. 
    Which is an example of kinetic energy?
    • A. 

      An arrow in flight

    • B. 

      A ball right before it is dropped

    • C. 

      A warm bicycle chain

    • D. 

      A gallon of gasoline

  • 8. 
    According to the law of conservation of mass, mass is __________________. Select ALL that apply.
    • A. 

      Conserved during chemical reactions

    • B. 

      Always conserved over time

    • C. 

      Conserved during physical transformations

    • D. 

      Never conserved

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