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WorksheetsFormative Assessment Topic 11
Total questions: 10
Worksheet time: 28mins
Which of the following is the defect mass of a nucleus? (M = nucleus’s mass, mp proton’s mass, mn= neutron’s mass)
Δm = Nmn+ Zmp+ M
Δm = Nmn - Zmp – M
Δm = Nmn+ Zmp – M
Δm = M - Nmn + Zmp
The energy equivalent in joules of the mass of
2.0 *10-31 𝑘𝑔 _____.
2.0 *10-31𝐽
6.0 *10-23 𝐽
1.8 * 10-14𝐽
8.2 * 10-14 𝐽
The atom 714𝑁
has a mass of 14.0031 𝑢.
The mass defect equals ______.
0.1089 u
0.2026 u
0.2341 u
0.0003 u
The region of binding energy graph where fusion can occur is...
region “I” at small values of A
region “II” at large values of A
regions “I” and “II”
binding energy is not related to fusion
A sample contains an amount of radioactive material with a half-life of 3.5 days. After 2 weeks the fraction of the radioactive material remaining is
94 %.
25 %.
6 %.
0 %.
A radio-isotope has an activity of 400 Bq and a half-life of 8 days. After 32 days the activity of the sample is
200 Bq.
100 Bq.
50 Bq.
25 Bq.
