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Chemistry and the Big Bang
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What are the three subatomic particles and their respective charges?
proton (+), neutron (neutral), electron (-)
Where are each of the subatomic particles found in an atom?
p+ and n found in nucleus; e- found in cloud around nucleus
How is atomic mass determined?
Bottom # on the periodic table; Top number for nuclear notation; add protons and neutrons
What is an isotope? Give an example.
Atom with a different number of neutrons. C-14
How is a compound different from a molecule?
A compound combines atoms from 2 or more DIFFERENT elements, whereas a molecule combines 2 or more atoms from ONE or more elements.
How are the atoms in a chemical reaction changed?
rearranged
Based on the following chemical equation, list the reactants: A + B --> C + D
A, B
What is a galaxy?
A large formation of stars surrounding a black hole.
What makes up a solar system?
Star and anything orbiting around it
How does the presence of large amounts of helium in the universe support the Big Bang Theory?
Large amounts of helium provide evidence that the universe was really hot.
In basic terms, describe the Big Bang Theory.
The universe is expanding and cooling.
When did the universe begin?
13.7 billion years ago
When did the solar system form?
4.6 billion years ago
When does H fusion occur during a star's life cycle?
protostar/ main sequence stage
When does He fusion occur during a star's life cycle?
red giant/ red supergiant phase
How is the charge of an atom determined?
atomic # - # e- or # p+ - # e-
Which type of stars burn through their fuel more quickly?
massive stars
Which type of stars are the hottest?
massive stars
How does the red shift of light support the Big Bang Theory?
The red shift provides evidence for the expansion of the universe.
During which phase of an average star's life cycle would you find more nitrogen atoms? How do you know?
black dwarf; the star has cooled, so fusion of larger atoms can occur
What is cosmic soup?
At the beginning of the universe, it was too hot for matter to form, so protons, neutrons, and electrons were a mixture called "cosmic soup."
What is the charge of C-14?
0
After a supernova for a super massive star, what is the next phase?
black hole
Where is the independent variable found on a graph?
X axis
Define dependent variable.
The factor that is being measured.


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