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Chem Exam 4 Review Nuclear Equations

Terms in this set (24)

When looking at a nuclear equation component the atomic mass is located on the (top or bottom) left of the symbol? What is the unit measured in?
top left of the symbol, unit is amu
When looking at a nuclear equation component the atomic number (also located on the periodic table) is located on the (top or bottom) left of the symbol?
bottom left
What is the atomic mass and atomic number of an alpha particle?
4 amu and the atomic number is 2 (He)
T/F in the nucleus of the alpha particle He, there is electrons present.
FALSE, there are no electrons present only the nucleus consisting of 2 protons and 2 neutrons
What are alpha particles emitted by?
LARGE radioactive nuclei
What is the atomic mass and the atomic number for a beta particle?
atomic mass is 0 and atomic number is 1-
What is the beta particle also referred to as?
electron
When looking at a beta particle the neutron splits Into a proton and an electron (electron is ___________ and the proton ________________).
the electron is emitted and the proton remains in the nucleus.
When a beta particle is emitted the charge has to be -1 on the product side so from reactants to products the atomic number will (increase or decrease).
the atomic number will increase
with beta particles there is a reduction in neutrons by _____ and a gain of protons by ____.
reduction of neutrons by 1 and a gain of protons by 1.
Which particle has the highest energy?
alpha particle
Gamma ray is an example of what concept learned in chapter 8?
the electromagnetic spectrum
T/F Gamma ray emission can accompany alpha and beta decay or may happen by itself
true
what does the "m" mean in gamma ray emission? what does the lack of an "m" mean on the product side atomic mass?
"metastable" --> high energy state

the lack of the "m" (metastable) symbol on the product side indicates a lower energy state
When ONLY a gamma ray is emitted the atomic mass changes by _____ and the atomic number changes by ____.
0 and 0
with gamma ray emission the energy of the nucleus (increases or decreases)
decreases
metastable means that the isotope is ___________.
not stable
What is a positron
a positively charged electron
What happens with a proton when talking about a positron?
the proton splits into a neutron and a positron.
What is the atomic mass and the atomic number of a positron?
the atomic mass is 0 and the atomic number is +1
When a positron is emitted the atomic number on the products side (increases or decreases) by 1.
decreases
How much energy is in a beta particle?
1/2 as much as the energy in an alpha particle
proton + electron = ________________
neutron
proton= ___________ + _____________
neutron + positron
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