Chemistry Practice Review Questions!

16 Questions | Total Attempts: 4977

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Chemistry Practice Review Questions!


Questions and Answers
  • 1. 
    What is matter?
    • A. 

      Anything that has electrons

    • B. 

      Anything that has mass and is made of atoms

    • C. 

      Anything that has energy

    • D. 

      Anything that is classified as a compound

  • 2. 
    Atoms are mostly space.
    • A. 

      True

    • B. 

      False

  • 3. 
    Atoms contain which of the following?
    • A. 

      Neutrinos, Protons, Electrons

    • B. 

      Neutrons, Protons, Electrolytes

    • C. 

      Neutrinos, Proteins, Electrolytes

    • D. 

      Neutrons, Protons, Electrons

  • 4. 
    What are the charges of the following particles (in order): Protons, Neutrons, Electrons
    • A. 

      Positive, Negative, Neutral

    • B. 

      Negative, Positive, Neutral

    • C. 

      Positive, Neutral, Negative

    • D. 

      Neutral, Positive, Negative

  • 5. 
    What does the atomic number of an element tells us?
    • A. 

      The number of protons in the atom

    • B. 

      The number of neutrons in the atom

    • C. 

      Which group of the periodic table it is in

    • D. 

      The number of valence electrons it has

  • 6. 
    A atom or molecule that has gained electrons to become negatively charged is called a ________?
  • 7. 
    The Valence of an atom tells us what?
    • A. 

      How many protons it has

    • B. 

      How many bonds it can form

    • C. 

      Whether it has a charge or not

    • D. 

      If it is a metal or non-metal

  • 8. 
    Which of the following ideas of John Dalton are still believed to be correct?
    • A. 

      Atoms are solid.

    • B. 

      Atoms in an element are all the same type of atom.

    • C. 

      Atoms cannot be split into smaller particles.

  • 9. 
    Earnest Rutherford came up with the "Small Nucleus" model of the atom by firing positively charged particles at gold foil. What did he measure in this experiment?  
    • A. 

      How fast the particles traveled

    • B. 

      How many of the particles were absorbed

    • C. 

      How the particles were deflected

    • D. 

      How many of the particles became negatively charged

  • 10. 
    How did Bohr change Rutherford's model of the atom?  
    • A. 

      He said that the electrons were concentrated in the centre of the atom (nucleus)

    • B. 

      He said that electrons could only occupy specific energy levels as they orbit the nucleus

    • C. 

      He said that the electrons could orbit the nucleus in a completely random way.

  • 11. 
    Mass number = the number of protons + the number of __________
  • 12. 
    An atom of magnesium has an atomic number of 12 and a mass number of 24. How many protons, neutrons, and electrons does it contain?
    • A. 

      12 protons, 24 neutrons, and 12 electrons

    • B. 

      12 protons, 12 neutrons, and 12 electrons

    • C. 

      24 protons, 24 neutrons, and 12 electrons

    • D. 

      24 protons, 24 neutrons, and 24 electrons

  • 13. 
    What is the atomic number of the atom below?
  • 14. 
    What is the Mass number of the atom below?
  • 15. 
    In the diagram below p = proton, n= neutron and the red dots are electrons. Each of these atoms represent a different element.
    • A. 

      True

    • B. 

      False

  • 16. 
    Isotopes are formed when an atom has the same number of protons but a different number of ______
    • A. 

      Electrons

    • B. 

      Neutrons

    • C. 

      Particles

    • D. 

      Quarks