Subatomic Particles (Simplified) Practice Problems

True or False: One atomic mass unit is defined as the mass of a hydrogen atom.

Is the following statement true or false? The mass of a proton is twice the mass of a neutron.

Identify the subatomic particle that is located in a region outside the nucleus of an atom.

The atomic number can be used to determine which of the following?

Indicate whether the following statement is true or false: The atomic number of an atom is equal to the sum of the number of protons and the number of neutrons present in its nucleus.

Classify the following as true or false: Neutrons and electrons exhibit repulsive forces with each other.

Classify the following statement as true or false: The mass of a proton or a neutron is significantly greater than that of an electron.

Which of the following statements is true about the number of protons in an atom of Cl and an atom of Mg?

Determine the number of protons and electrons present in a neutral atom of xenon.

Identify the element that "X" represents in ⁷²₃₂X. 

Identify the number of subatomic particles in an atom of sodium that has a mass number of 23

What are the charges of protons, neutrons, and electrons?

Determine the molar mass (g/mol) of a sample of chlorine where all atoms have 20 neutrons.