10 Questions
What is a stable isotope?
A stable isotope is an isotope that does not undergo radioactive decay. The number of protons and neutrons in the nucleus is the same.
What is an unstable isotope?
An unstable isotope is an isotope that undergoes radioactive decay, leading to a new element. The number of protons and neutrons in the nucleus are different.
What is the objective of the activity involving Radioactive M&M's?
The objective is to develop a model that demonstrates radioactive decay and half-life.
Which Next Generation Science Standard does this activity align with?
HS-PS1-8.
What does the activity emphasize in terms of models and energy released in nuclear processes?
The activity emphasizes simple qualitative models, such as pictures or diagrams, and the scale of energy released in nuclear processes relative to other kinds of transformations.
An unstable isotope undergoes ______ decay, leading to a new element
radioactive
A stable isotope is an isotope that does not undergo ______ decay
radioactive
The number of protons and neutrons in the nucleus of a stable isotope ______ the same
is
The number of protons and neutrons in the nucleus of an unstable isotope ______ different
are
The activity involving Radioactive M&M's aims to develop a model that demonstrates ______ decay and half-life
radioactive
Study Notes
Radioactive Decay
- Stable isotopes do not undergo radioactive decay, with an equal number of protons and neutrons in the nucleus.
- Unstable isotopes undergo radioactive decay, leading to a new element, with a different number of protons and neutrons in the nucleus.
Modeling Radioactive Decay
- Develop simple qualitative models (e.g., pictures or diagrams) to illustrate changes in the nucleus of an atom during radioactive decay.
- Models should demonstrate the energy released during radioactive decay relative to other transformations.
Next Generation Science Standard
- HS-PS1-8: Students can develop models to illustrate changes in the composition of the nucleus and energy released during fission, fusion, and radioactive decay.
Test your understanding of radioactive decay and half-life with this high school level quiz. Develop models to demonstrate changes in the nucleus of an atom and the energy released during fissi...
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