What is radioactive decay?
Radioactive Decay

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Chemistry
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8th - 12th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
Radioactive decay is the process by which an unstable atomic nucleus loses energy by emitting radiation, resulting in the transformation of the element into a different element or isotope.
2.
FLASHCARD QUESTION
Front
What are the three main types of radioactive decay?
Back
The three main types of radioactive decay are alpha decay, beta decay, and gamma decay.
3.
FLASHCARD QUESTION
Front
What is alpha decay?
Back
Alpha decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle (2 protons and 2 neutrons), resulting in a new element with a mass number reduced by 4 and atomic number reduced by 2.
4.
FLASHCARD QUESTION
Front
What is beta decay?
Back
Beta decay is a type of radioactive decay in which a neutron in an atomic nucleus is transformed into a proton and an electron (beta particle) is emitted, increasing the atomic number by 1.
5.
FLASHCARD QUESTION
Front
What is gamma decay?
Back
Gamma decay is a type of radioactive decay that involves the emission of gamma rays (high-energy photons) from an excited nucleus, without changing the number of protons or neutrons.
6.
FLASHCARD QUESTION
Front
What is a half-life?
Back
A half-life is the time required for half of the radioactive atoms in a sample to decay into a more stable form.
7.
FLASHCARD QUESTION
Front
What is the mass number?
Back
The mass number is the total number of protons and neutrons in an atomic nucleus.
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