15
QuizMultiple Choice
Cycles of Matter — Unit test
Question 15 • TX-Earth Systems A
The diagram illustrates radioactive decay.
Answer
A
Structure 1 is an unstable atom that turns into structure 2, a new atom.B
Structure 1 is a stable element that breaks down into structure 2, an unstable element.C
Structure 1 is a radioactive element that loses particles to create structure 2, released energy.D
Structure 1 is a radioactive atom that decays into structure 2, half of the original unstable element.