710.💎Unit 7 Flashcardizz
Flashcard
•
Science
•
11th Grade
•
Practice Problem
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is nuclear decay?
Back
Nuclear decay is the process by which an unstable atomic nucleus loses energy by emitting radiation, resulting in the transformation of the nucleus into a different state.
2.
FLASHCARD QUESTION
Front
What are the three main types of nuclear radiation?
Back
The three main types of nuclear radiation are alpha particles, beta particles, and gamma rays.
3.
FLASHCARD QUESTION
Front
What is an alpha particle?
Back
An alpha particle consists of 2 protons and 2 neutrons, making it identical to a helium nucleus. It is positively charged and is emitted during alpha decay.
4.
FLASHCARD QUESTION
Front
What is a beta particle?
Back
A beta particle is a high-energy, high-speed electron or positron emitted during beta decay. It can be classified as beta minus (electron) or beta plus (positron).
5.
FLASHCARD QUESTION
Front
What is gamma radiation?
Back
Gamma radiation is a form of electromagnetic radiation emitted from a nucleus during radioactive decay, characterized by high energy and no mass.
6.
FLASHCARD QUESTION
Front
How does nuclear decay affect atomic number?
Back
In alpha decay, the atomic number decreases by 2. In beta decay, it increases by 1 (beta minus) or decreases by 1 (beta plus). Gamma decay does not change the atomic number.
7.
FLASHCARD QUESTION
Front
What is the role of protons in an atom?
Back
Protons are positively charged particles found in the atomic nucleus. They determine the atomic number and identity of an element.
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