Atoms Ions Isotope Quiz Review

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Author:
JPalmer
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287475
Filename:
Atoms Ions Isotope Quiz Review
Updated:
2014-10-29 16:01:13
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atom ion isotope averageatomicmass
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Review for high school general chemistry class quiz
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  1. Name the 3 subatomic particles of an atom and identify each particles charge
    • protons have  positive one charge
    • electrons have a negative one charge
    • neutrons are neutral (no charge)
  2. Name the 3 subatomic particles and give mass for each
    • protons have mass of 1 amu
    • neutrons have mass of 1 amu
    • electrons have essentially no mass
  3. What is the charge of a carbon nucleus?
    +6  (carbon has 6 protons)
  4. What charge does an atom have?
    Atoms are electrically neutral
  5. Why is the mass listed on the periodic table not a whole number?
    the mass is an average of the naturally occurring isotopes
  6. Explain how to find the number of neutrons in an atom
    Subtract the atomic number from the atomic mass
  7. How does one find the number of protons an atom has?
    The atomic number
  8. How does one determine the number of electrons an atom has?  Give two ways
    • 1.  equal to the number of protons (atomic number)
    • 2.  add up the electrons in the given configuration on the periodic table
  9. How does an ion form?
    When an atom gains or loses an electron
  10. Has a potassium ion (K +1) gained or lost an electron?
    lost one electron
  11. What uniquely identifies an element?
    the atomic number
  12. How many electrons does a sulfide ion have?  (S-2)
    18 electrons
  13. What term is used for atoms of the same element with a different mass?
    isotope
  14. What do isotopes of the same element have different masses?
    different number of neutrons
  15. What do isotopes of the same element have different masses?
    (mass  x  abundance/100) + (mass x abundance/100) etc
  16. The atomic mass of potassium on the table is 39.1    Which isotope, K-37 or K-40, is in greatest abundance in nature?
    K-40
  17. How many neutrons in
    a) K-37
    b) K-40
    • a) 18 n
    • b) 21 n
  18. A radioisotope is simply an isotope that has an ___________ nucleus
    unstable
  19. What is the symbol for an ion that has 15 protons and 18 electrons?
    P -3
  20. How would one classify the symbol C-14
    an isotope of carbon
  21. How would one classify the symbol O-2 ?
    an ion of oxygen
  22. In the Candium activity, how was the abundance of each isotope calculated?
    the number of that isotope in the sample divided by all the Candium pieces times 100
  23. What two types of matter are classified as substances?
    elements and compounds

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