Question

which of the following statements about subatomic particles are true, and which are false? drag the appropriate items to their respective bins. protons have about the same mass as neutrons. some atoms dont have any protons. protons and electrons have charges of the same magnitude but opposite sign. protons and neutrons have charges of the same magnitude but opposite sign. true false

Explanation:

1. Protons have about the same mass as neutrons: The mass of a proton is approximately \(1.6726\times10^{-27}\, \text{kg}\) and the mass of a neutron is approximately \(1.6749\times10^{-27}\, \text{kg}\), so they have about the same mass. This statement is true.
2. Some atoms don't have any protons: By definition, an atom is defined by the number of protons in its nucleus (the atomic number). A hydrogen atom has 1 proton, and even the simplest atom (if we consider the standard model) must have at least 1 proton (or it would be a subatomic particle like a neutron, not an atom). So this statement is false.
3. Protons and electrons have charges of the same magnitude but opposite sign: The charge of a proton is \(+1.602\times 10^{-19}\, \text{C}\) and the charge of an electron is \(- 1.602\times 10^{-19}\, \text{C}\), so they have the same magnitude and opposite signs. This statement is true.
4. Protons and neutrons have charges of the same magnitude but opposite sign: Protons have a positive charge (\(+1.602\times 10^{-19}\, \text{C}\)) and neutrons have a charge of \(0\). So this statement is false.

Answer:

True:

• Protons have about the same mass as neutrons.
• Protons and electrons have charges of the same magnitude but opposite sign.

False:

• Some atoms don't have any protons.
• Protons and neutrons have charges of the same magnitude but opposite sign.