Basic Chemistry Exam - Summer School

8 Questions | Total Attempts: 2607

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Basic Chemistry Exam - Summer School

This is the information that we have covered during the first week of summer school.


Questions and Answers
  • 1. 
    Which of the following is an example of a physical change?
    • A. 

      Ice forming after water is placed in a freezer.

    • B. 

      A certain liquid is added to a solid, and bubbles of gas form.

    • C. 

      Adding baking sode to vinegar.

    • D. 

      A bicycle rusting in the rain.

  • 2. 
    What element is represented in the picture?
    • A. 

      Carbon

    • B. 

      Boron

    • C. 

      Oxygen

    • D. 

      Helium

  • 3. 
    When the scientist Mendeleev made his arrengement of the periodic table, he found that elements with _______________________ fell into the same group on the table.
    • A. 

      The same mass

    • B. 

      Similar size

    • C. 

      The same color

    • D. 

      Similar properties

  • 4. 
    When you mix sodium hydroxide and bromothymol blue, it becomes warm.  This is an example of a _________________ reaction.
    • A. 

      Exothermic

    • B. 

      Inhibitor

    • C. 

      Inhibitor

    • D. 

      Endothermic

  • 5. 
    Which of the following changes is a chemical change?
    • A. 

      Water is boiled.

    • B. 

      Wood is burned.

    • C. 

      Aluminum foil is crumpled.

    • D. 

      Glass is shattered.

  • 6. 
    The mass number of an atom is equal to the number of protons and neutrons.  According to this definition, which element in the table above has the highest mass number?
    • A. 

      Hydrogen

    • B. 

      Carbon

    • C. 

      Boron

    • D. 

      Oxygen

  • 7. 
    This is the fomula for vinegar.CH3CO2HWhat are all of the elements found in the formula for vinegar?
    • A. 

      Hydrogen and Oxygen

    • B. 

      Carbon, Hydrogen, and Oxygen

    • C. 

      Carbon and Oxygen

    • D. 

      Chrome, Cobalt, and Hydrogen

  • 8. 
    Why should we practice safety in the laboratory?  Give three examples of how to be safe in the lab.
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