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Physical Science

Terms in this set (30)

What is the sequence of events in the Big Bang Theory?
Singularity, inflation, formation of matter and anti-matter, annihilation by cancellation of both matters, cooling down of universe, big bang nucleosynthesis, recombination, dark ages, formation of cosmic bodies.
What were able to combine to make light nuclei?
Protons and neutrons
The combination of light nuclei was the beginning of what era?
Era of primordial nucleosynthesis
What does nucleo mean?
Nucleus
What does synthesis mean?
Formation
The newly formed deuterium could undergo further nuclear reactions to form what?
Higher elements
Nucleus combines with another nucleus to form larger nuclei
Nuclear fusion
Nucleus splits into smaller nuclei
Nuclear fission
What is the order of a formation of a star?
Nebula, protostar, H + He fusion, main sequence star, red giant star, supernova, black hole
Formation of light element such as H, He, and traces of Li
Big Bang Nucleosynthesis
Formation of heavy elements such as Li to Fe
Stellar Nucleosynthesis
Formation of elements heavier than Fe such as Co to Pu
Stellar Explosion/Supernova Nucleosynthesis
Loss of an alpha article
Alpha decay
Loss of a beta particle
Beta decay
Emission of gamma ray
Gamma emission
Conversion of a proton in a nucleus into a neutron, along with the release of a positron
Positron emission
Drawing of an electron into an atom's nucleus
Electron capture
Addition of alpha particle
Bombardment of alpha particle
Loss of neutron
Spontaneous fission
The nucleus of an unstable isotope can lose one of several particles such as?
Neutron, alpha particle, beta minus particle, beta plus particle
The loss of a neutron gives a different isotope of what?
Of the same element
When a neutron is lost, the atomic number remains the same but what is reduced by about 1 amu?
Atomic mass
A helium nucleus with 2 protons and 2 neutrons
Alpha particle
When an alpha particle is lost, an new element is given with anatomic number 2 less than the original isotope. How lower would an atomic mass be?
Lower by about 4 amu
What can be lost from the nucleus when one of the neutrons in that nucleus splits into a proton and an electron?
Electron
Beta decay forms a new isotope with an atomic mass greater by 1 than the original isotope. What happens to the atomic mass?
Nearly unchanged
What is an electron?
Beta minus particle
What is the result of a proton in the nucleus splitting into a positron and a neuron?
Beta plus particle
Loss of a beta plus particle leaves the atomic mass nearly unchanged. What happens to the atomic number?
Now 1 less than the original isotope
What is a positron?
Beta plus particle
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