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ATOMIC STRUCTURE

ATOMIC STRUCTURE. Notes are for your personal use. Abbreviate as you see fit. Atomic Structure. Atoms are the ____________ of matter, or building blocks to make all solids, liquids & gases Atoms can be broken down into ____________ of SUBATOMIC PARTICLES. SUBATOMIC PARTICLES.

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ATOMIC STRUCTURE

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  1. ATOMIC STRUCTURE Notes are for your personal use. Abbreviate as you see fit.

  2. Atomic Structure • Atoms are the ____________ of matter, or building blocks to make all solids, liquids & gases • Atoms can be broken down into ____________ of SUBATOMIC PARTICLES

  3. SUBATOMIC PARTICLES • 1. ______________ = positive electrical charge, found in the NUCLEUS, or center of an atom • 2. _______________= neutral (no electrical charge), also found in the NUCLEUS

  4. SUBATOMIC PARTICLES • 3. ______________= negative electrical charge, found moving around the nucleus in the ELECTRON CLOUD

  5. Atomic Structure

  6. Atomic Structure • Electrons like to travel _______, when they can find another electron to travel with. • Different layers within the electron cloud are called ________________ or SHELLS

  7. Atomic Structure • ENERGY LEVELS or ________ hold different amounts of electrons • There are exceptions to the rule, but the basic idea is:

  8. Atomic Structure • Level 1 holds _______ electrons • Level 2 holds _______ electrons

  9. Atomic Structure • Level 3 holds _______ electrons • Level 4 holds _______ electrons

  10. Draw an atom with 4 energy levels

  11. How to find atomic structure • Check the PERIODIC TABLE OF ELEMENTS • Created by _____________ in 1869 • Page 134-135 in your text

  12. How to find atomic structure • ATOMIC NUMBER = __________________ in the nucleus • Each different atomic number is a new _______________, or pure substance that cannot be broken down

  13. How to find atomic structure • ATOMIC MASS = __________ PLUS ________ in the nucleus • Neutrons ____________ to an atom, making some elements “heavy” or “light”

  14. How to find atomic structure • Atomic Mass- ___________ = # of ____________ • Neutrons usually __________ as the atomic number increases. This means as atoms hold more protons, they usually hold more neutrons too!

  15. How to find atomic structure • To find the number of electrons in an atom, check the atomic number. • For every _________, an atom will have a __________

  16. THE END

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