Chemistry Practice Midterm Part 2

36 Questions | Total Attempts: 133

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Chemistry Practice Quizzes & Trivia

This quiz is to help prepare first year chemistry students for their first semester exam.


Questions and Answers
  • 1. 
    What is the difference between an element and a compound?
    • A. 

      An element is a homogeneous mixture and a compound is a heterogeneous mixture.

    • B. 

      An element is a pure substance and a compound is a physical mixture of elements.

    • C. 

      An element is a pure substance and a compound is a chemical combination of elements.

    • D. 

      None of these are correct.

  • 2. 
    You have 5.5 grams of Hydrogen in 50. grams of water.  What is the percent of oxygen by mass?
    • A. 

      11%

    • B. 

      9.0%

    • C. 

      .89 %

    • D. 

      89 %

  • 3. 
    Which Law best describes this statement:"Mass is not created or destroyed, only rearranged."
    • A. 

      Law of Conservation of Mass

    • B. 

      Law of Definite Proportions

    • C. 

      Law of Multiple Proportions

    • D. 

      Law of Octaves

  • 4. 
    If I mix 8.8 grams of hydrogen with oxygen and get 80. grams of water, how many grams of oxygen did I use?
    • A. 

      9. g

    • B. 

      80. g

    • C. 

      71. g

    • D. 

      You need more information to answer this question.

  • 5. 
     What does the 6 in the above symbol represent?
    • A. 

      Mass number

    • B. 

      Atomic number

    • C. 

      Atomic mass

    • D. 

      None of these

  • 6. 
     What does 12.011 in the above symbol represent?
    • A. 

      Mass number

    • B. 

      Atomic number

    • C. 

      Atomic mass

    • D. 

      None of these.

  • 7. 
    Which of the following are true about isotopes?
    • A. 

      The number of protons are the same, but the number of neutrons are different.

    • B. 

      The number of protons are the same, but the number of electrons are different.

    • C. 

      The number of neutrons are the same, but the number of electrons are different.

    • D. 

      Two of these are correct.

  • 8. 
    What is the definition of frequency?
    • A. 

      The energy of a wave.

    • B. 

      How fast the wave is going.

    • C. 

      One full cycle of a wave pattern.

    • D. 

      The number of waves that pass a particular point in a second.

  • 9. 
    How many valence electrons does Sulfur have?
    • A. 

      2

    • B. 

      4

    • C. 

      6

    • D. 

      8

  • 10. 
    Use the following equations and Plank's constant (6.626 x 10-34 Js) to find the amount of energy carried by a photon that has a frequency of 5.00 x 1014 Hz.c= (wavelength) vE = hv
    • A. 

      7.55 x 10^-21 J

    • B. 

      9.06 x 10^26 J

    • C. 

      3.31 x 10^-19 J

    • D. 

      6.00 x 10^-7 J

  • 11. 
    Use the following equations and Plank's constant (6.626 x 10-34 Js) to find the frequency of light that has a wavelength of 440. nmc= (wavelength) vE = hv
    • A. 

      6.82 x 10^14 Hz

    • B. 

      6.82 x 10^16 Hz

    • C. 

      4.52 x 10^-19 Hz

    • D. 

      2.92 x 10^42 Hz

  • 12. 
    Use the following equations and Plank's constant (6.626 x 10-34 Js) to find the wavelength of a photon that has the energy of 5.00 x 10-19 J?c= (wavelength) vE = hv
    • A. 

      7.55 x 10^14 nm

    • B. 

      3.98 x 10^-7 nm

    • C. 

      398 nm

    • D. 

      600. nm

  • 13. 
    What type of elements are brittle solids?
    • A. 

      Metals

    • B. 

      Nonmetals

    • C. 

      Metalloids

    • D. 

      Transition metals

  • 14. 
    Where is the f block located on the periodic table.
    • A. 

      The block to the far left.

    • B. 

      The block in the middle.

    • C. 

      The block to the far right.

    • D. 

      The block below the main table.

  • 15. 
    What is the name of group 2?
    • A. 

      Alkali metals

    • B. 

      Alkaline earth metals

    • C. 

      Halogens

    • D. 

      Noble gases.

  • 16. 
    What is the periodic trend for electronegativity?
    • A. 

      Increases going left to right and increases going down.

    • B. 

      Increases going left to right and decreases going down.

    • C. 

      Decreases going left to right and increases going down.

    • D. 

      Decreases going left to right and decreases going down.

  • 17. 
    What is the periodic trend for ionization energy?
    • A. 

      Increases going left to right and increases going down.

    • B. 

      Increases going left to right and decreases going down.

    • C. 

      Decreases going left to right and increases going down.

    • D. 

      Decreases going left to right and decreases going down.

  • 18. 
    What is ionization energy?
    • A. 

      Electron love.

    • B. 

      The energy that it takes to gain an electron.

    • C. 

      The energy that it takes to remove an electron.

    • D. 

      Energy associated with losing 3 valence electrons

  • 19. 
    Which of the following is the largest in terms of radius?
    • A. 

      Br-

    • B. 

      Br

    • C. 

      Cl

    • D. 

      F

  • 20. 
    What element has the electron configuration of:[Ar] 4s2 3d5
    • A. 

      Mn

    • B. 

      Tc

    • C. 

      Br

    • D. 

      Cl

  • 21. 
    Which block on the period table has can hold 14 electrons
    • A. 

      S

    • B. 

      P

    • C. 

      D

    • D. 

      F

  • 22. 
    Where are the metals located on the periodic table.
    • A. 

      S block

    • B. 

      D and f block

    • C. 

      Left of the 'staircase'

    • D. 

      More than one of these is correct.

  • 23. 
    Which of the following are not one of the main parts of the scientific method?
    • A. 

      Hypothesis

    • B. 

      Observation

    • C. 

      Experiment

    • D. 

      All these are correct.

  • 24. 
    If I have a 1.0 liter jar in which I keep my lost marbles. What would be the mass of the marbles in the jar if each marble takes up approximately 1.3 ml of space and has a mass of 3.5 g.  Assume that the marbles use the space efficiently.
    • A. 

      27 kg

    • B. 

      0.27 kg

    • C. 

      2.7 kg

    • D. 

      It is impossible to figure out since the jar is 3 dimensional.

  • 25. 
    Convert 820 nm to meters.
    • A. 

      8.2 x 10^-9 m

    • B. 

      8.2 x 10^7 m

    • C. 

      8.2 x 10^9 m

    • D. 

      8.2 x 10^-7 m

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