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An atom has a mass number of 19, 11 protons, and 10 electrons. How many neutrons are present in the nucleus?
False - Alpha and Beta decay change the element, but Gamma decay does not.
Average Atomic Mass
positive ion/ cation
ion
atomic number
8
2 protons and 2 neutrons
a high energy electron is released
The process of nuclear decay always results in the original atom changing into a different element.
False - Alpha and Beta decay change the element, but Gamma decay does not.
Average Atomic Mass
positive ion/ cation
ion
atomic number
8
2 protons and 2 neutrons
a high energy electron is released
__________________________________of an element is the average mass of the element’s isotopes, weighted according to the abundance of each isotope.
False - Alpha and Beta decay change the element, but Gamma decay does not.
Average Atomic Mass
positive ion/ cation
ion
atomic number
8
2 protons and 2 neutrons
a high energy electron is released
In beta decay, a neutron in an atom changes into a proton and ____________________ called a beta particle.
False - Alpha and Beta decay change the element, but Gamma decay does not.
Average Atomic Mass
positive ion/ cation
ion
atomic number
8
2 protons and 2 neutrons
a high energy electron is released
The number of protons in an atom of an element is the element’s____________________________________. It is the whole number listed with each element on the periodic table.
False - Alpha and Beta decay change the element, but Gamma decay does not.
Average Atomic Mass
positive ion/ cation
ion
atomic number
8
2 protons and 2 neutrons
a high energy electron is released
Alpha Decay: An alpha particle is made of __________________. When an atom releases an alpha particle, its atomic number decreases by two. Uranium-238 decays to thorium-234 through the process.
False - Alpha and Beta decay change the element, but Gamma decay does not.
Average Atomic Mass
positive ion/ cation
ion
atomic number
8
2 protons and 2 neutrons
a high energy electron is released
A(n) ________________________________is an atom that is no longer neutral because it has gained or lost electrons. An ion can be positively or negatively charged, depending on whether it has lost or gained electrons.
False - Alpha and Beta decay change the element, but Gamma decay does not.
Average Atomic Mass
positive ion/ cation
ion
atomic number
8
2 protons and 2 neutrons
a high energy electron is released
An atom with a positive charge is called a ________________________________or______________________________.
False - Alpha and Beta decay change the element, but Gamma decay does not.
Average Atomic Mass
positive ion/ cation
ion
atomic number
8
2 protons and 2 neutrons
a high energy electron is released
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