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Chemistry and the Big Bang
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How is the charge of an atom determined?
atomic # - # e- or # p+ - # e-
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Which type of stars burn through their fuel more quickly?
massive stars
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Where are each of the subatomic particles found in an atom?
p+ and n found in nucleus; e- found in cloud around nucleus
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Based on the following chemical equation, list the reactants: A + B --> C + D
A, B
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What are the three subatomic particles and their respective charges?
proton (+), neutron (neutral), electron (-)
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What is an isotope? Give an example.
Atom with a different number of neutrons. C-14
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What is the charge of C-14?
0
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When does He fusion occur during a star's life cycle?
red giant/ red supergiant phase
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When did the universe begin?
13.7 billion years ago
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When did the solar system form?
4.6 billion years ago
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How are the atoms in a chemical reaction changed?
rearranged
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Which type of stars are the hottest?
massive stars
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In basic terms, describe the Big Bang Theory.
The universe is expanding and cooling.
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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
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Where is the independent variable found on a graph?
X axis
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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."
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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.
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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.
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What is a galaxy?
A large formation of stars surrounding a black hole.
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Define dependent variable.
The factor that is being measured.
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After a supernova for a super massive star, what is the next phase?
black hole
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When does H fusion occur during a star's life cycle?
protostar/ main sequence stage
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How is atomic mass determined?
Bottom # on the periodic table; Top number for nuclear notation; add protons and neutrons
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What makes up a solar system?
Star and anything orbiting around it
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How does the red shift of light support the Big Bang Theory?
The red shift provides evidence for the expansion of the universe.
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