Chemistry

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Author:
mglicc
ID:
145538
Filename:
Chemistry
Updated:
2012-04-03 18:37:46
Tags:
chemistry 9th grade science 9a lrei matt glickman
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  1. What is an ATOM?
    the smallest part of an element
  2. particles that make up an atom are called _____________.
    SUB-ATOMIC PARTICLES
  3. What are the 3 subatomic particles?
    PROTONS, NEUTRONS and ELECTRONS
  4. Electrons have a ________ charge. (positive, negative, or neutral)
    POSITIVE
  5. Neutrons have a ________ charge (positive, negative or neutral)
    NEUTRAL
  6. The number of protons in an atom is known as ___________.
    ATOMIC NUMBER
  7. The # of protons + the # of neutrons in an atom is known as __________.
    ATOMIC MASS
  8. What are VALENCE ELECTRONS?
    Electrons ion the last energy shell (18) of the atomic structure
  9. An element's ___________ is indicated by its group # on the periodic table.
    amount of VALENCE ELECTRONS
  10. How do you find the # of NEUTRONS that an element has?
    by subtracting its ATOMIC MASS from its ATOMIC NUMBER (Atomic Mass - Atomic #)
  11. What is an ION?
    An ION is an atom that has gained or lost an electron.
  12. What is the notation for SULPHATE?
    (SO4)2-
  13. What is the notation for CARBONATE?
    (CO3)2-
  14. What is the notation for HYDROXIDE?
    (OH)-1
  15. What is the notation for NITRATE?
    (NO3)-1
  16. What is the notation for PHOSPHATE?
    (PO4)-3

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