### Step-by-Step Solution
1. Understand the Given Information:
- The table specifies the mass of an unknown subatomic particle as 1 atomic mass unit (amu).
2. Identify Particles by Mass:
- We need to identify which subatomic particles have a mass of approximately 1 amu:
- Proton: Mass is approximately 1 amu.
- Neutron: Mass is also approximately 1 amu.
- Electron: Mass is much smaller (approximately 0.0005 amu), so it can be ignored for this scenario.
3. Possible Particles:
- Based on the mass criteria, the particle could either be:
- A Proton
- A Neutron
4. Evaluate the Statements:
- Statement 1: "Its location is in the nucleus, because the particle is a proton or a neutron."
- Proton: Resides in the nucleus.
- Neutron: Also resides in the nucleus.
- As both protons and neutrons are found in the nucleus, this statement is accurate.
- Statement 2: "Its location is in the nucleus, because the particle is a neuron or an electron."
- Electron: Does not reside in the nucleus, it orbits the nucleus.
- This statement is incorrect because electrons are not found in the nucleus.
- Statement 3: "Its charge is +1, because the particle is a proton."
- If the particle is a proton, its charge is indeed +1. However, it doesn't account for neutrons which also have a mass of 1 amu.
- This statement is partially correct but incomplete since it doesn’t consider neutrons.
- Statement 4: "Its charge is 0, because the particle is a neutron."
- If the particle is a neutron, its charge is indeed 0. However, this doesn’t account for protons which also have a mass of 1 amu.
- This statement is partially correct but incomplete since it doesn’t consider protons.
5. Conclusion:
- The most accurate statement is Statement 1, which correctly identifies that the particle must be either a proton or neutron and that both are located in the nucleus.
Therefore, the correct statement based on the given information is:
- “Its location is in the nucleus, because the particle is a proton or a neutron.”
