Edexcel IGCSE Physics 7.7 Nuclear Emission Effects Questions
Use proton (atomic) and nucleon (mass) numbers before and after emission to track what changes in the nucleus.
- Syllabus
- First assessment 2019
- Course
- Physics 4PH1
Exam points
- For alpha emission, state that proton number decreases by 2 and mass number decreases by 4.
- For beta-minus emission, state that proton number increases by 1 and neutron number decreases by 1, so mass number stays the same.
- For neutron emission, state that mass number decreases by 1 while proton number stays the same.
Edexcel IGCSE Physics 7.7 Nuclear Emission Effects Questions question 1
[Maximum number: 2]
This question is about using carbon dating to find the age of pieces of wood.
The equation shows how carbon-14 forms in the atmosphere.
01n+714 N→614C+11X
Carbon-14 decays by beta decay.
State what happens to the number of protons and the number of neutrons in a carbon-14 nucleus when it decays.
- protons increase by 1 / to 7
- neutrons decrease by 1 / to 7
Ignore:
- references to atomic number
- references to nucleon / mass number
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