CIE iGCSE Co-Ordinated Science P5.1 The nucleus Exam Style Questions Paper 2
Question
A proton has charge q and mass m. A neutron has no charge and mass m.
Which row shows the charge and mass of an alpha (σ)-particle?
▶️Answer/Explanation
Ans : B
Question
The diagrams represent pairs of nuclei of some atoms.
Which pair shows nuclei of different isotopes of the same element?
▶️Answer/Explanation
Ans: B
Question
An atom of beryllium is represented by \( _{4}^{9}\textrm{Be}\)
How many neutrons are in the nucleus of this type of beryllium atom?
A 4 B 5 C 9 D 1
▶️Answer/Explanation
Ans :B
Question
The table compares an atom of carbon-13 and an atom of nitrogen-14.
| Carbon-13 | Nitrogen-14 | |
|---|---|---|
| Nucleon number A | 13 | 14 |
| Proton number Z | 6 | 7 |
What do the neutral atom of carbon-13 and the neutral atom of nitrogen-14 have the same number of?
A. electrons
B. ions
C. neutrons
D. protons
▶️Answer/Explanation
Answer: C
Explanation: Carbon-13 has 7 neutrons (13 – 6 = 7), and nitrogen-14 also has 7 neutrons (14 – 7 = 7). Therefore, they have the same number of neutrons.