Science Review for Alana<br />
What’s an atom?<br />Smallest unit of matter<br />
Structure of an atom<br />Electron Cloud<br />Nucleus<br />
Subatomic Particles<br />In the Nucleus:<br />In the Electron Cloud:<br />Protons: + charge<br />Neutrons: no charge<br />...
Neutral atom<br />
Check<br />What are the two overall structures in the atom?<br />What are the names of the atomic particles?<br />
What’s an element?<br />Atoms with different numbers of protons<br />
Atomic Number<br /># of protons=atomic number<br />Identification (student id# or SSN)<br />
Why is it called “periodic”?<br />
Check<br />Where are the protons located?<br />Where are the electrons located?<br />Where are the neutrons located?<br />
Neutral atom<br />
Mass Number<br />Protons + Neutrons<br />
Exercise<br />Draw a neutral lithium atom (protons, neutrons, electrons) with an mass number of 7<br />
Isotope<br />Atom with same # of protons but different # of neutrons (different mass number)<br />
Radioactivity<br />Too many or too few neutrons compared to protons<br />UNSTABLE<br />It wants to be sane (more stable)…s...
Check<br />What is the atomic number?<br />
Atomic mass<br />Weighted atomic mass of the isotope of an element<br />
Structure of an atom<br />Electron Cloud<br />Nucleus<br />
Electron cloud<br />Electrons arranged in Energy level<br />1st level can hold 2 electrons<br />2nd energy level can hold ...
Electron cloud<br />
Exercise<br />Draw a neutral carbon atom with an atomic mass of 12<br />Draw the electron cloud of Na<br />Draw the electr...
Bonding<br /> As it turns out, atoms bond together for a very simple reason: atoms like to have full valence shells<br />h...
Ions<br />Atoms that are Not neutral <br /># Electrons not equal to # protons<br />Previous example of sodium and chlorine...
Part K on review sheet<br />
States/Changes of matter<br />Solids, liquids, gases<br />http://www.chem.purdue.edu/gchelp/liquids/character.html<br />ht...
Solutions<br />http://www.chem4kids.com/files/matter_solution.html<br />
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  • Describe using apple analogy
  • http://www.antonine-education.co.uk/Physics%20A%20level/Unit_1/Radioactivity/Structure/topic_1.htm
  • http://en.wikipedia.org/wiki/Periodic_table_%28large_version%29
  • http://education.jlab.org/glossary/isotope.html
  • Describe using apple analogy
  • http://web.jjay.cuny.edu/~acarpi/NSC/5-bonds.htm
  • http://en.wikipedia.org/wiki/Periodic_table_%28large_version%29
  • http://en.wikipedia.org/wiki/Periodic_table_%28large_version%29
  • Science review

    1. 1. Science Review for Alana<br />
    2. 2. What’s an atom?<br />Smallest unit of matter<br />
    3. 3. Structure of an atom<br />Electron Cloud<br />Nucleus<br />
    4. 4. Subatomic Particles<br />In the Nucleus:<br />In the Electron Cloud:<br />Protons: + charge<br />Neutrons: no charge<br />Mass of each:1 atomic mass unit (amu)<br />Electrons: - charge<br />Practically no mass<br />
    5. 5. Neutral atom<br />
    6. 6. Check<br />What are the two overall structures in the atom?<br />What are the names of the atomic particles?<br />
    7. 7. What’s an element?<br />Atoms with different numbers of protons<br />
    8. 8. Atomic Number<br /># of protons=atomic number<br />Identification (student id# or SSN)<br />
    9. 9. Why is it called “periodic”?<br />
    10. 10. Check<br />Where are the protons located?<br />Where are the electrons located?<br />Where are the neutrons located?<br />
    11. 11. Neutral atom<br />
    12. 12. Mass Number<br />Protons + Neutrons<br />
    13. 13. Exercise<br />Draw a neutral lithium atom (protons, neutrons, electrons) with an mass number of 7<br />
    14. 14. Isotope<br />Atom with same # of protons but different # of neutrons (different mass number)<br />
    15. 15. Radioactivity<br />Too many or too few neutrons compared to protons<br />UNSTABLE<br />It wants to be sane (more stable)…so it gets rid of something!<br />Emits a particle or energy<br />Ever heard of uranium?<br />Types of nucleus radiation that can be emitted:<br />Alpha<br />Beta<br />Gamma<br />
    16. 16. Check<br />What is the atomic number?<br />
    17. 17. Atomic mass<br />Weighted atomic mass of the isotope of an element<br />
    18. 18. Structure of an atom<br />Electron Cloud<br />Nucleus<br />
    19. 19. Electron cloud<br />Electrons arranged in Energy level<br />1st level can hold 2 electrons<br />2nd energy level can hold 8<br />3rd…18<br />4th…32<br />Outermost electrons called valence electrons – chemical bonds<br />
    20. 20. Electron cloud<br />
    21. 21. Exercise<br />Draw a neutral carbon atom with an atomic mass of 12<br />Draw the electron cloud of Na<br />Draw the electron cloud of Cl<br />
    22. 22. Bonding<br /> As it turns out, atoms bond together for a very simple reason: atoms like to have full valence shells<br />http://web.jjay.cuny.edu/~acarpi/NSC/5-bonds.htm<br />http://www.kentchemistry.com/links/bonding/bondingflashes/bond_types.swf<br />
    23. 23.
    24. 24. Ions<br />Atoms that are Not neutral <br /># Electrons not equal to # protons<br />Previous example of sodium and chlorine<br />
    25. 25.
    26. 26. Part K on review sheet<br />
    27. 27. States/Changes of matter<br />Solids, liquids, gases<br />http://www.chem.purdue.edu/gchelp/liquids/character.html<br />http://www.clickandlearn.org/Gr9_Sci/Particle_Theory.htm<br />
    28. 28. Solutions<br />http://www.chem4kids.com/files/matter_solution.html<br />

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