CIE iGCSE Co-Ordinated Science P5.1 The nucleus Exam Style Questions Paper 2
▶️ Answer/Explanation
The mass number, 9, represents the total number of protons and neutrons in the nucleus.
The atomic number, 4, represents the number of protons only.
Subtracting gives the number of neutrons: \(9 – 4 = 5\).
✅ Answer: (B)
The atomic number, 4, represents the number of protons only.
Subtracting gives the number of neutrons: \(9 – 4 = 5\).
✅ Answer: (B)
▶️ Answer/Explanation
The Sun’s energy comes from small nuclei, mainly hydrogen, joining together to form larger nuclei such as helium.
This joining process is called nuclear fusion, and it releases huge amounts of energy.
Nuclear fission is the splitting of large nuclei (used in nuclear power stations), which is a different process from what powers the Sun.
✅ Answer: (D)
This joining process is called nuclear fusion, and it releases huge amounts of energy.
Nuclear fission is the splitting of large nuclei (used in nuclear power stations), which is a different process from what powers the Sun.
✅ Answer: (D)
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