What does X represent?
Radioactivity and Half Life - Physical Science

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Chemistry
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Element Symbol
2.
FLASHCARD QUESTION
Front
Energy in the sun is produced as a result of nuclear ____ reactions.
Back
fusion
3.
FLASHCARD QUESTION
Front
What is the Half life of this isotope?
Back
10 seconds
4.
FLASHCARD QUESTION
Front
What makes something radioactive?
Back
an unstable nucleus
5.
FLASHCARD QUESTION
Front
Our Sun, an average star in the galaxy, uses the process of fusion to produce its energy. Every second, the Sun converts 600 million tons of matter into--
Back
electromagnetic energy
6.
FLASHCARD QUESTION
Front
What is radioactivity?
Back
The process by which unstable atomic nuclei lose energy by emitting radiation.
7.
FLASHCARD QUESTION
Front
What is half-life?
Back
The time required for half of the radioactive atoms in a sample to decay.
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