Do Now: Would you like to visit the moon, why or why not?
or
Do you believe we will have a lunar colony in your lifetime? Why or why not?
Tuesday, December 6, 2011
the Moon
Answer one of the following.
Do Now: Would you like to visit the moon, why or why not?
or
Do you believe we will have a lunar colony in your lifetime? Why or why not?
Do Now: Would you like to visit the moon, why or why not?
or
Do you believe we will have a lunar colony in your lifetime? Why or why not?
Friday, December 2, 2011
Do Now:Strong Force:
Do Now #_____ What is the strong force and why don't you think it holds the nucleus of larger atoms together as well as smaller atoms?
This video has a nice explanation of why the strong force can't hold larger atoms together as well as smaller atoms hence causing radioactive elements. Watch from 3:49 seconds on or just watch the whole thing.
This video has a nice explanation of why the strong force can't hold larger atoms together as well as smaller atoms hence causing radioactive elements. Watch from 3:49 seconds on or just watch the whole thing.
Wednesday, November 30, 2011
Half Life - From Wikipedia -
Good Links
Click Here
or here
In general, the half-life of a nuclide depends solely on its nuclear properties; it is not affected by external factors such as temperature, pressure, chemical environment, or presence of a magnetic or electric field.[3][4][5] (For some nuclides which decay by the process of electron capture, such as beryllium-7, strontium-85, and zirconium-89, the decay rate may be slightly affected by local electron density, therefore these isotopes may not be as suitable for radiometric dating.) But in general, the half-life of any nuclide is essentially a constant. Therefore, in any material containing a radioactive nuclide, the proportion of the original nuclide to its decay product(s) changes in a predictable way as the original nuclide decays over time. This predictability allows the relative abundances of related nuclides to be used as a clock to measure the time from the incorporation of the original nuclide(s) into a material to the present.
Click Here
or here
In general, the half-life of a nuclide depends solely on its nuclear properties; it is not affected by external factors such as temperature, pressure, chemical environment, or presence of a magnetic or electric field.[3][4][5] (For some nuclides which decay by the process of electron capture, such as beryllium-7, strontium-85, and zirconium-89, the decay rate may be slightly affected by local electron density, therefore these isotopes may not be as suitable for radiometric dating.) But in general, the half-life of any nuclide is essentially a constant. Therefore, in any material containing a radioactive nuclide, the proportion of the original nuclide to its decay product(s) changes in a predictable way as the original nuclide decays over time. This predictability allows the relative abundances of related nuclides to be used as a clock to measure the time from the incorporation of the original nuclide(s) into a material to the present.
Tuesday, November 29, 2011
IONS
Do Now# _____ Define Ion and then draw an ion of helium. Clearly label your protons, neutrons and electrons.
Monday, November 28, 2011
Do Now # ___
Define: Atomic number, mass number and isotope and then draw an isotope of Carbon. (Clearly label your protons, neutrons and electrons.)
Sunday, November 27, 2011
Thursday, November 17, 2011
Chapter 12 vocabulary
Atoms
Model
Theory
Nucleus
Electrons
Electron cloud
Protons,
atomoic mass unit (amu)
Nuetrons
Atomic number
Isotopes
Mass number
Atomic mass
Forces in atoms
· Gravity
· Electromagnetic force
· Strong force
· Weak force
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